bluuebunny/crossref_metadata_2025_split huggingface dataset:
Variation‐aware widely tunable nanoscale design of CMOS active inductor‐based RF bandpass filter
Authors: Mehra Rishab , Kumar Vikash , Islam Aminul , Kaushik Brajesh Kumar 
Published: May 2017

SummaryThis paper presents a novel design methodology for realizing a variation‐aware widely tunable active inductor‐based RF bandpass filter (BPF). The inductor‐less filter is designed and implemented using voltage differencing transconductance amplifier (VDTA) as an active building block and a grounded capacitor, thereby validating its suitability for fully integrated circuit applications. Digital ‘coarse’ tuning and analog ‘fine’ tuning are employed to achieve better frequency coverage. The designed filter exhibits a tuning range of 1.65–3.015 GHz and a 3‐dB bandwidth of 1400–122 MHz which translates into a quality factor of 1.17–24.71. It offers a voltage gain of 0–22.91 dB, noise figure of 28.16–28.95 dB, has a 1‐dB compression point of 2.50–2.478 dBm and draws 0.065–0.232 mW power from 1‐V power supply. Our proposed design shows a figure‐of‐merit of 82.08–91.27 dB, which is higher as compared to its counterparts available in the literature. The filter is implemented in 45‐nm CMOS technology node using metal gate and strained silicon. Copyright © 2017 John Wiley & Sons, Ltd.
Afternoon cortisol provides a link between self‐regulated anger and peer‐reported aggression in typically developing children in the school context
Authors: Oberle Eva , McLachlan Kaitlyn , Catherine Nicole L.A. , Brain Ursula , Schonert‐Reichl Kimberly A. , Weinberg Joanne , Oberlander Tim F. 
Published: May 2017

AbstractAggression jeopardizes positive development in children and predicts social and academic maladjustment in school. The present study determined the relationships among anger dysregulation (a marker of emotion regulation), cortisol activity (a biomarker of stress), and peer‐nominated aggression in typically developing children in their everyday classroom setting (N = 151, Mean age = 10.86, SD =.74). Salivary cortisol was collected at 09:15, 11:45, and 14:45 hr across 4 consecutive days. Children provided self‐reports of anger regulation; peers reported proactive and reactive aggressive behaviors. Hierarchical linear regression analyses, followed by a bootstrapping analysis identified basal afternoon cortisol as a significant mediator between anger regulation and peer‐reported aggression. More dysregulated anger significantly predicted lower afternoon cortisol, which in turn predicted increased peer‐reported aggression. These results align with previous research on links among hypocortisolism, emotional regulation, and behavior, and suggest a possible meditational pathway between emotion and behavior regulation via decreased afternoon cortisol levels.
Preventing progression from gestational diabetes mellitus to diabetes: A thought‐filled review
Authors: Kasher‐Meron Michal , Grajower Martin M. 
Published: May 2017

SummaryWomen with a history of gestational diabetes are at high risk for developing type 2 diabetes mellitus. In studies with long periods of follow‐up, diabetes incidence of up to 70% has been reported.The appropriate follow‐up of women following a pregnancy complicated by gestational diabetes has not been studied. Published guidelines recommend that obstetrician/gynaecologists, who are often the de facto primary care physicians for these otherwise healthy young women, incorporate glucose monitoring in the post‐partum period into their annual examinations. In reality, reported rates of screening have been low.There is also no clear evidence for any beneficial interventions to prevent diabetes in patients with prior history of gestational diabetes. Lifestyle intervention programmes for diabetes prevention among these patients yielded disappointing results. Metformin, pioglitazone, liraglutide, and bariatric surgery are possible options but based on inadequate data. There remains a need for randomized, placebo‐controlled studies to evaluate various pharmacologic treatments, with and without lifestyle interventions, to prevent type 2 diabetes mellitus in women with a history of gestational diabetes.
An evaluation of semi‐automated methods for collecting ecosystem‐level data in temperate marine systems
Authors: Griffin Kingsley J. , Hedge Luke H. , González‐Rivero Manuel , Hoegh‐Guldberg Ove I. , Johnston Emma L. 
Published: May 2017

AbstractHistorically, marine ecologists have lacked efficient tools that are capable of capturing detailed species distribution data over large areas. Emerging technologies such as high‐resolution imaging and associated machine‐learning image‐scoring software are providing new tools to map species over large areas in the ocean. Here, we combine a novel diver propulsion vehicle (DPV) imaging system with free‐to‐use machine‐learning software to semi‐automatically generate dense and widespread abundance records of a habitat‐forming algae over ~5,000 m2 of temperate reef. We employ replicable spatial techniques to test the effectiveness of traditional diver‐based sampling, and better understand the distribution and spatial arrangement of one key algal species. We found that the effectiveness of a traditional survey depended on the level of spatial structuring, and generally 10–20 transects (50 × 1 m) were required to obtain reliable results. This represents 2–20 times greater replication than have been collected in previous studies. Furthermore, we demonstrate the usefulness of fine‐resolution distribution modeling for understanding patterns in canopy algae cover at multiple spatial scales, and discuss applications to other marine habitats. Our analyses demonstrate that semi‐automated methods of data gathering and processing provide more accurate results than traditional methods for describing habitat structure at seascape scales, and therefore represent vastly improved techniques for understanding and managing marine seascapes.
Short‐term effect of elevated CO2 concentration (0.5%) on mitochondria in diploid and tetraploid black locust (Robinia pseudoacacia L.)
Authors: Xu Fuling , Jiang Mingquan , Meng Fanjuan 
Published: May 2017

AbstractRecent increases in atmospheric CO2 concentration have affected the growth and physiology of plants. In this study, plants were grown with 0.5% CO2 for 0, 3, and 6 days. The anatomy, fluorescence intensity of H2O2, respiration rate, and antioxidant activities of the mitochondria were analyzed in diploid (2×) and tetraploid (4×) black locust (Robinia pseudoacacia L.). Exposure to 0.5% CO2 resulted in clear structural alterations and stomatal closure in the mitochondria. Reduced membrane integrity and increased structural damage were observed in 2× plants at 6 days. However, after 0.5% CO2 treatment, little structural damage was observed in 4× plants. Under severe stress, H2O2 and malondialdehyde were dramatically induced in both 2× and 4× plants. Proline remains unchanged at an elevated CO2 concentration in 4× plants. Moreover, the total respiration and alternative respiration rates decreased in both 2× and 4× plants. In contrast, the cytochrome pathway showed no decrease in 2× plants and even increased slightly in 4× plants. The antioxidant enzymes and nonenzymatic antioxidants, which are related to the ascorbate–glutathione pathway, were inhibited following CO2 exposure. These analyses indicated that 4× and 2× plants were damaged by 0.5% CO2 but the former were more resistant than the latter, and this may be due to increases in antioxidant enzymes and nonenzymatic antioxidants and stabilized membrane structure.
A novel method of caenophidian snake sex identification using molecular markers based on two gametologous genes
Authors: Laopichienpong Nararat , Tawichasri Panupong , Chanhome Lawan , Phatcharakullawarawat Rattanin , Singchat Worapong , Kantachumpoo Attachai , Muangmai Narongrit , Suntrarachun Sunutcha , Matsubara Kazumi , Peyachoknagul Surin , Srikulnath Kornsorn 
Published: May 2017

AbstractSex identification provides important information for ecological and evolutionary studies, as well as benefiting snake conservation management. Traditional methods such as cloacal probing or cloacal popping are counterproductive for sex identification concerning very small species, resulting in difficulties in the management of their breeding programs. In this study, the nucleotide sequences of gametologous genes (CTNNB1andWACgenes) were used for the development of molecular sexing markers in caenophidian snakes. Two candidate markers were developed with the two primer sets, and successfully amplified by a single band on the agarose gel in male (ZZ) and two bands, differing in fragment sizes, in female (ZW) of 16 caenophidian snakes forCTNNB1and 12 caenophidian snakes forWAC. Another candidate marker was developed with the primer set to amplify the specific sequence forCTNNB1W homolog, and thePCRproducts were successfully obtained in a female‐specific 250‐bpDNAbands. The three candidatePCRsexing markers provide a simple sex identification method based on the amplification of gametologous genes, and they can be used to facilitate effective caenophidian snake conservation and management programs.
Kobresia meadow degradation and its impact on water status
Authors: He Siyuan , Richards Keith 
Published: May 2017

AbstractAlpine Kobresia meadows are valuable pasture resources on the central and eastern Qinghai‐Tibetan Plateau that are also important in preserving local and regional water. Kobresia pygmaea is the dominant species forming a typical turf layer resistant to disturbance; however, overgrazing may have exceeded that resistance. An integrated approach, including field monitoring, soil sampling, stable isotope hydrology, and physical modelling, was used to evaluate the hydrological consequences of meadow degradation with respect to normal meadow, degraded crust, and bare soil. Multiple evidence confirms that the soil moisture condition worsens when the meadow degrades. Bare soil has the coarsest soil texture, rapid infiltration, and low soil moisture in the root zone, and soil evaporation rate is high compared to normal meadow especially in dry periods. Crusted meadow soil has the lowest surface infiltration and a larger exposure of the leaf surface because of low plant cover over a dark surface, which favours high transpiration. Crusted meadow also has a drier condition in the root zone. These suggest that degradation is a positive feedback process in which leaf and soil exposure to radiation strengthen water demand for transpiration and facilitate non‐productive water loss, leaving the root zone (0–20 cm) dry and subject to further soil erosion. This positive process suggests that recovery of the Kobresia meadow is a long‐term task which has to consider the different levels of degradation and the effects of local climate change, in order to adapt the rangeland management practices, to the needs of meadow conservation and restoration.
Effects of mechanical stressors caused by mean flow and turbulence on aquatic plants with different morphologies
Authors: Asaeda Takashi , Sanjaya Kelum , Kaneko Yasuko 
Published: May 2017

AbstractMean flow and turbulence are two significant factors that simultaneously affect aquatic plants. The tension from mean flow is unidirectional, whereas loads from turbulence fluctuate with the forces and pressures of different magnitude and direction. Our aim was to determine which water movement factor was most significant for habitat selection by submerged plants with different morphologies. The effects of mean flow and turbulence were tested with the whorled Elodea nuttallii, Potamogeton crispus, and leafy Vallisneria asiatica, controlling for other factors. A gradually constricted transparent pipe with plants in the middle was used in a recirculating tank to test the effects of the mean flow, and the effects of turbulence were examined by generating different turbulence levels in tanks with vertically oscillating grids. To determine plant response to these stressors, plant morphology, contents of cellulose, lignin, H2O2, pigments, indole acetic acid, and antioxidant activities were measured. Plant tissues were examined using transmission electron microscopy and light microscopy. At high turbulence levels, antioxidant activities and H2O2 concentrations were significantly higher than in plants affected by mean flow or in stagnant water; thus, the physiological stress from turbulence was significantly higher regardless of morphology. V. asiatica benefited from mean flow, whereas whorled E. nuttallii and P. crispus were more stressed than plants in stagnant water. To withstand vigorous motion, accumulations of lignin and cellulose were high and cell ultrastructure was altered in plants exposed to high turbulence levels. Therefore, the physiology of submerged plants was affected more by turbulent motion than by mean flow.
Effect of a semi‐permanent road on N, P, and CO2 dynamics in a poor fen on the Western Boreal Plain, Canada
Authors: Plach Janina M. , Wood Meagan E. , Macrae Merrin L. , Osko Terrance J. , Petrone Richard M. 
Published: May 2017

AbstractPeatlands of the Western Boreal Plains are under stress from oil and gas development and associated infrastructure such as road construction and removal. An improved understanding of nutrient cycling and atmospheric carbon dioxide (CO2) exchange interactions in peatlands can assist in recommending best management practices to industry to minimize the ecohydrological disturbance footprint of road features. Peat nutrient (nitrogen, N, and phosphorus, P) supply, net mineralization, groundwater concentrations, and peatland‐atmosphere CO2 exchange rates were quantified within a poor fen bisected by a semi‐permanent road located in the Athabasca Oil Sands region of Alberta, Canada, over one growing season. Results demonstrate that the road impeded groundwater movement across the site; however, water table and moisture differences were minimal, likely due to the unusually wet season. No clear impacts of the road on nutrient dynamics were observed, but subtle differences in productivity and respiration resulted in significantly lower net CO2 sequestration (net ecosystem exchange) on the down‐flow side of the road. Differences in vegetation composition between sides of the road were apparent and likely indicate longer‐term moisture differences at the site. Elevated rates of productivity and respiration coincided with a seasonal change in the relative supplies of N and P (increased N : P ratios), suggesting that the relative availability of N versus P may be important to CO2 fluxes in Western Boreal Plains peatlands. Collectively, these findings demonstrate the need to capture interactions between hydrology, ecology and nutrient biogeochemistry when evaluating peatland carbon cycling response to road disturbances across this region.
Ecological niche model comparison under different climate scenarios: a case study ofOleaspp. in Asia
Authors: Ashraf Uzma , Peterson A. Townsend , Chaudhry Muhammad Nawaz , Ashraf Irfan , Saqib Zafeer , Rashid Ahmad Sajid , Ali Hassan 
Published: May 2017

AbstractEcological niche modeling (and the related species distribution modeling) has been used as a tool with which to assess potential impacts of climate change processes on geographic distributions of species. However, the factors introducing variation into niche modeling outcomes are not well understood: To this end, we used seven algorithms to develop models (Maxent,GARP,BIOCLIM, artificial neural networks, support‐vector machines, climate envelope, and environmental distance) to estimate the potential geographic distribution of olives (Olea europaeasensu lato, includingOlea ferruginea) under two climatic data sets (current 2000 and future 2050). Five general circulation models and two representative concentration pathway scenarios were used as predictor variables in future projections of the geographic potential of this species; models were fit at global extents (10′ spatial resolution) but transferred and interpreted for a region of particular interest in Central Asia, which largely avoids problems with truncation of niche estimates. We found marked differences among approaches in predicted distributions and model performance, as well as in the future distributional pattern reconstructed, from one algorithm to another. These general approaches, when model‐to‐model variation is managed appropriately, appear promising in predicting the potential geographic distribution ofO. europaeasensu lato and thus can be an effective tool in restoration and conservation planning for wild populations, as well as possible commercial plantations of this species.
Magnetite Nanoparticles Bonded Carbon Quantum Dots Magnetically Confined onto Screen Printed Carbon Electrodes and their Performance as Electrochemical Sensor for NADH
Authors: Canevari Thiago C. , Cincotto Fernando H. , Gomes Delmarcio , Landers Richard , Toma Henrique E. 
Published: May 2017

AbstractHybrid magnetite/carbon quantum dots (MagNP/C‐dots) were prepared and their characterization performed by high resolution transmission electron microscopy (HR‐TEM), X‐ray diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS). Because of their suitable magnetization and electrochemical properties, they were used as versatile electrode modifiers after magnetically confining onto screen printed carbon electrodes (SPE), with the aid of a miniature external magnet. The reported strategy introduces a convenient procedure for assembling modified electrodes, since the nanoparticles can be easily released by removing the magnet. The non‐enzymatic magnetic biosensor showed excellent performance in the determination of NADH at the concentration range 2×10−7 to 5×10−6 mol L−1, exhibiting a sensitivity of 0.15 μmol L−1 and detection limit of 20 nmol L−1. The MagNP/C‐dots/SPE sensor was also successfully applied for the determination of NADH in serum samples. The interference of typical biological molecules has also been investigated.
Simultaneous Detection of Dopamine and Uric Acid on Indium Tin Oxides Modified with Cost‐effective Gas‐phase Synthesized Single Walled Carbon Nanotubes
Authors: Khan Md. Mohibul Islam , Baek Geun Woo , Kim Kyuwon , Kwon Hyuck‐In , Jin Sung Hun 
Published: May 2017

AbstractCost‐effective gas‐phase synthesized single walled carbon nanotubes (SWCNTs) were first employed for the surface modification of indium tin oxides (ITO) via electrostatic coating of poly‐l‐lysine (PLL). Compared with control substrates of bare ITO and SWCNT‐PLL‐slide glasses, SWCNT‐PLL‐ITO, with high catalytic properties associated with large surface areas, showed significant improvement of electro catalytic activity toward the oxidation of dopamine (DA) and uric acid (UA). The cyclic voltammetric (CV) peak separation of oxidation for both DA and UA was estimated to be ∼ 0.13 V, which renders them capable of simultaneously detecting DA and UA in a mixed solution. The differential pulse voltammetry (DPV) technique was further performed to obtain a linear detection range of DA from 1.0 μM to 100 μM, and a detection limit of 1.0 μM was confirmed in the mixed solution. Furthermore, the practical analytical ability of the method was finally confirmed by selective detection of both DA and UA in human urine samples without any preliminary treatment, implying the feasibility of applying bio‐sensors in a low‐cost manner.
Reduced Graphene Oxide Supported Cobalt Bipyridyl Complex for Sensitive Detection of Methyl Parathion in Fruits and Vegetables
Authors: Govindasamy Mani , Sakthinathan Subramanian , Chen Shen‐Ming , Chiu Te‐Wei , Sathiyan Anandaraj , Merlin Johnson Princy 
Published: May 2017

AbstractHerein, we are described a green route to prepare reduced graphene oxide supported cobalt inorganic complex nanocomposite (GRGO/[Co(bpy)3]) (bpy=2,2′‐bipyridine) through facile and wet chemical approach. The formation of the nanocomposite was confirmed through suitable physical and chemical characterization techniques. The GRGO/[Co(bpy)3] nanocomposite was coated on the pretreated glassy carbon electrode (GCE). The GCE/GRGO/[Co(bpy)3] modified electrode has excellent electrocatalytic ability towards methyl parathion reduction, while the overpotential drops drastically to –0.18 V (vs. Ag/AgCl). Moreover, the effect of concentration, scan rate and electrolyte pH were detail studied. Besides, the linear response range was 0.05‐1700 μM and the detection limit was 0.0029 μM (S/N=3) and the sensitivity was 1.8197 μA μM−1 cm−2. Moreover, the fabricated electrode has high level of selectivity, which delivers satisfactory repeatability, reproducibility and stability. The sensing method was successfully demonstrated in real samples such as, tomato and apple samples.
Capillarys 2 Flex Piercing: Analytical performance assessment according to CLSI protocols for HbA1c quantification
Authors: Doggui Radhouene , Abdelhafidh Sahli Chaïma , Aissa Wassef Lotfi , Hammami Maroua , Ben Sedrine Maha , Mahjoub Rahma , Zouaoui Khemais , Daboubi Rim , Siala Hajer , Messaoud Taieb , Bibi Amina 
Published: May 2017

AbstractHbA1c is used for monitoring diabetic balance. In this paper we report an assessment of the analytical performances of Capillarys 2 Flex Piercing (C2FP) for HbA1c measurement using CE (Capillary Electrophoresis). CLSI (Clinical and Laboratory Standard Institute) protocols are used for the evaluation of apparatus performances: precision, linearity, method comparison, trueness and common interferences. HbA1c CVs average in intra‐assay was 1.6% between run imprecision CV ranged from 0.1 to 1.8%. The linearity was demonstrated between 4.7 and 15.0%. The comparison study revealed that Bland Altman plot mean difference was equal to −0.03 (CI 95% (−0.05 to −0.0003)) and Passing‐Bablok regression intercept was −0.05, CI95%(−0.13 – −0.05); slope: 1.00, CI95%[1.00–1.01]. A strong correlation (r > 0.99) was proved. No significant effects of hemoglobin variants were seen with CE on HbA1c measurement. No problem related to sample‐to‐sample carry over was noted. No interferences of LA1c and cHb were observed. CE allowed quantification of HbA1c even at low level of total hemoglobin (40 g/L) in contrast to HPLC. Furthermore, this analyzer offered the opportunity of quantifying the HbA2 simultaneously with HbA1c. This evaluation showed that C2FP is a convenient system for the control of diabetes and the detection of hemoglobinopathies.
Evaluation of Hybrid Anode Usability in Lithium Polysulfide Flow Batteries
Authors: Yang Liuqing , Li Jingfa , Jiang Xi , Li Guochun , Lee Jim Yang 
Published: May 2017

AbstractThe scalability of lithium‐sulfur batteries can be improved by implementing them as lithium polysulfide flow batteries (LPSFBs). However, a low specific capacity and rapid capacity fading are observed in these flow batteries. We discovered that this deficiency can be addressed by using a hybrid anode. The hybrid anode consists of a lithiated graphite felt and a Li metal. The former serves as the buffer in lithiation and delithiation to shift most of the parasitic reactions that normally occur on Li to lithiated graphite to result in an improved protection of the Li surface. Specifically, in a 0.4 m lithium polysulfide catholyte, a LPSFB with an activated hybrid anode could be cycled with a high Coulombic efficiency (≈100 %) and high energy efficiency (≈79.5 %) to deliver a high specific discharge capacity of 532.5 mAh g−1 at 1 mA cm−2 current density, of which 87.4 % of the capacity could be retained after 40 cycles. This represents a significant improvement in the cycle stability and sulfur utility of LPSFBs.