bluuebunny/crossref_metadata_2025_split huggingface dataset:
The use of RFID in soil‐erosion research
Authors: Parsons Anthony John , Onda Yuichi , Noguchi Takehiro , Patin Jeremy , Cooper James , Wainwright John , Sakai Naoki 
Published: July 2014

ABSTRACTIn this paper, we examine the use of radio frequency identification (RFID) tags for studying soil erosion. Surrogate soil particles were created by coating RFID tags with silicone clay and bronze powder to give them an overall density similar to that of quartz particles. The particles were between 2.5 mm and 4.0 mm in diameter and had specific weights of 2.5 to 3.0. These tagged particles were deployed on two plots: first, in a proof‐of‐concept laboratory study and secondly in a field study, the latter involving repeated surveys after rainfall events. Seven surveys under natural rainfall over four months yielded recovery rates averaged 56%. RFIDs are shown to provide useful insights into the movement of individual soil particles during erosion processes. As RFID technology advances, further miniaturization is likely to occur enabling the movement of a greater range of soil particles to be studied, and we may anticipate improvements to the signal detection so that recovery does not rely wholly on visual identification. Copyright © 2014 John Wiley & Sons, Ltd.
Detection rate of fluorine‐18‐fluorodeoxyglucose positron emission tomography in patients with marginal zone lymphoma of MALT type: a meta‐analysis
Authors: Treglia Giorgio , Zucca Emanuele , Sadeghi Ramin , Cavalli Franco , Giovanella Luca , Ceriani Luca 
Published: July 2014

AbstractThe aim of this article is to meta‐analyse published data about the detection rate (DR) of fluorine‐18‐fluorodeoxyglucose (18F‐FDG) positron emission tomography (PET) and PET/computed tomography (CT) in the evaluation of patients with marginal zone lymphoma of the mucosa‐associated lymphoid tissue (MALT). A comprehensive literature search of studies published through February 2014 was performed. Pooled DR of 18F‐FDG PET or PET/CT including 95% confidence intervals (95% CI) was calculated on a per‐patient‐based analysis. Twenty studies including 376 patients with MALT lymphoma were selected. The pooled DR of 18F‐FDG PET or PET/CT was 71% (95% CI: 61–80%). A significant difference between the DR of PET/CT (69%; 95% CI: 61–80%) and that of PET alone (73%; 95% CI: 60–84%) was not demonstrated. A better DR of 18F‐FDG PET or PET/CT in bronchial (94%; 95% CI: 85–99%) and head‐and‐neck (90%; 95% CI: 78–98%) MALT lymphomas compared with gastric (62%; 95% CI: 46–77%) and ocular (49%; 95% CI: 36–63%) MALT lymphomas was found. This meta‐analysis demonstrates that MALT lymphoma is an 18F‐FDG‐avid tumour in most of the cases, suggesting a potential clinical role of 18F‐FDG PET or PET/CT in the initial evaluation of these patients. In particular, the DR of 18F‐FDG PET or PET/CT is related to the primary site of the MALT lymphoma. Copyright © 2014 John Wiley & Sons, Ltd.
Parabens can enable hallmarks and characteristics of cancer in human breast epithelial cells: a review of the literature with reference to new exposure data and regulatory status
Authors: Darbre Philippa D. , Harvey Philip W. 
Published: July 2014

ABSTRACTA framework for understanding the complexity of cancer development was established by Hanahan and Weinberg in their definition of the hallmarks of cancer. In this review, we consider the evidence that parabens can enable development in human breast epithelial cells of four of six of the basic hallmarks, one of two of the emerging hallmarks and one of two of the enabling characteristics. In Hallmark 1, parabens have been measured as present in 99% of human breast tissue samples, possess oestrogenic activity and can stimulate sustained proliferation of human breast cancer cells at concentrations measurable in the breast. In Hallmark 2, parabens can inhibit the suppression of breast cancer cell growth by hydroxytamoxifen, and through binding to the oestrogen‐related receptor gamma may prevent its deactivation by growth inhibitors. In Hallmark 3, in the 10 nm–1 μm range, parabens give a dose‐dependent evasion of apoptosis in high‐risk donor breast epithelial cells. In Hallmark 4, long‐term exposure (>20 weeks) to parabens leads to increased migratory and invasive activity in human breast cancer cells, properties that are linked to the metastatic process. As an emerging hallmark methylparaben has been shown in human breast epithelial cells to increase mTOR, a key regulator of energy metabolism. As an enabling characteristic parabens can cause DNA damage at high concentrations in the short term but more work is needed to investigate long‐term, low‐dose mixtures. The ability of parabens to enable multiple cancer hallmarks in human breast epithelial cells provides grounds for regulatory review of the implications of the presence of parabens in human breast tissue. Copyright © 2014 John Wiley & Sons, Ltd.
Lignin solubility in non‐imidazolium ionic liquids
Authors: Glas Daan , Van Doorslaer Charlie , Depuydt Daphne , Liebner Falk , Rosenau Thomas , Binnemans Koen , De Vos Dirk E. 
Published: July 2014

AbstractBACKGROUNDUntil now ionic liquid research concerning lignin dissolution and processing has mainly focused on the imidazolium type ionic liquids. Other types of ionic liquids can extend the scope of such processes due to their better thermal, base and oxidation stability.RESULTSA series of ammonium, phosphonium and pyrrolidinium based ionic liquids was screened for lignin dissolution. Tributylmethylphosphonium methyl sulfate and N‐butyl‐N‐methylpyrrolidinium dicyanamide displayed the highest Kraft lignin dissolution at 90 °C, with 460 and 390 g kg‐1, respectively. The latter ionic liquid combines this high solubility with a rather low viscosity, resulting in a promising medium for processing lignin and for other potential applications in wood separation technology. Owing to the ionic character of lignosulfonate, its solubility was even higher. The molecular structures of both recovered lignin and ionic liquid were not changed after lignin dissolution, as proven with FT‐IR, Curie‐point pyrolysis‐GC/MS and NMR. The ionic liquid could be recycled without loss in lignin dissolving ability.CONCLUSIONAmmonium, phosphonium, and pyrrolidinium based ionic liquids proved suitable for lignin dissolution, if combined with the right counterion. © 2014 Society of Chemical Industry
Application of high‐temperature Fenton oxidation for the treatment of sulfonation plant wastewater
Authors: Díaz de Tuesta Jose L. , García‐Figueruelo Cristina , Quintanilla Asuncion , Casas Jose A. , Rodriguez Juan J. 
Published: July 2014

AbstractBACKGROUNDThis work explores the application of an intensified Fenton process to a sulfonation plant wastewater for its further discharge into an activated sludge plant. The application of high‐temperature Fenton to this kind of wastewater has not been reported so far. Herein, it has been demonstrated to provide a better performance than other advanced oxidation processes (AOPs).RESULTSThe factorial experimental design methodology applied for describing the effect of the operating conditions, temperature, hydrogen peroxide dose and pH, demonstrated that quadratic models satisfactorily fitted the experimental results according to the analysis of variance (ANOVA). Response surface, contour plots and surface projections of the models were obtained describing the individual and crossed effects of the operating conditions on the selected responses: linear alkylbenzene sulfonate (LAS), total organic carbon (TOC) and chemical oxygen demand (COD) reduction.CONCLUSIONSWorking at 94 °C, 70% of the stoichiometric H2O2 dose relative to initial COD, 1 h reaction time and the pH of the wastewater as received (1.7) enabled achievement of the discharge limits into the exiting activated sludge plant of the petrochemical complex where the sulfonation plant is located. © 2014 Society of Chemical Industry
Microwave‐assisted heterogeneous catalytic oxidation of high‐concentration Reactive yellow 3 with CuFe2O4/PAC
Authors: Xiao Jun , Fang Xue , Yang Shaogui , He Huan , Sun Cheng 
Published: July 2014

AbstractBACKGROUNDThe investigation of microwave‐assisted heterogeneous catalytic oxidation of high‐concentration dye effluent with novel catalyst (CuFe2O4/PAC) is promising in the field of industrial wastewater treatment compared with conventional advanced oxidation techniques which are very slow.RESULTA novel microwave catalyst, CuFe2O4 loaded on powdery activated carbon (CuFe2O4/PAC) was prepared and applied for microwave‐assisted heterogeneous catalytic oxidation of high‐concentration reactive azo dye Reactive yellow 3 (RY3). The results showed that it exhibited 74.5% degradation efficiency, 48.5% TOC removal of RY3 (200 mg L‐1) within 5 min over a broad pH range from 3 to 11 and reduced the toxicity after degradation. The influences of initial pH, catalyst dosage, H2O2 concentration and reusability of catalyst on degradation were evaluated. The toxic potential during degradation was assessed by bioluminescence test. Moreover, •OH and O2•‐ were found to be the main active species involved in the system and a possible RY3 degradation mechanism was proposed.CONCLUSIONThis study found a microwave‐assisted heterogeneous oxidation system with CuFe2O4/PAC to be highly efficient, stable, low toxicity and relevant in high‐concentration dye wastewater treatment and industrial applications. © 2014 Society of Chemical Industry
Differences in nitrogen‐assimilating enzyme activity in halophyte species are habitat‐related
Authors: Cott Grace M. , Chapman Deborah V. , Jansen Marcel A. K. 
Published: July 2014

AbstractThe chemical form and content of available nitrogen (N) in salt marsh substrates varies considerably. On the western coast of Ireland, habitats designated as Ombrogenic Atlantic salt marshes were formed on ombrogenic peat substrate. The peat substrate in these systems has three times more ammonium than substrate from adjacent salt marsh habitats on sand and mud substrate. This study examined the extent to which the high concentration of ammonium in peat salt marsh substrate influences the N‐ assimilating enzyme activity of halophytes and the extent to which N metabolism differs between species. Specifically, this work investigated whether plants from peat salt marshes are more likely to assimilate ammonium than plants from non‐peat substrates. Four halophyte plant species—Armeria maritima, Aster tripolium, Plantago maritime, and Triglochin maritime—were sampled from various saltmarsh habitats including three sites on peat substrate and three on non‐peat substrate, comprising sand, mud and sand/mud. The activities of N‐metabolising enzymes—glutamine synthetase (GS), glutamate synthase, glutamate dehydrogenase (GDH), and nitrate reductase (NR)—were quantified in shoot and root parts. Root GS activity in Armeria maritima and shoot GS activity in Triglochin maritima were positively correlated with increasing soil ammonium levels. Root NR activity in Aster tripolium and shoot NR activity in Plantago maritima were significantly higher in plants grown on non‐peat substrates than peat substrates. The shoot : root GS activity ratio in Triglochin maritima on peat substrate was more than double the ratio on non‐peat substrates. It is concluded that all species tested displayed differences in N‐metabolising activities depending on the chemical form and/or concentration of N in the substrate, while three out of the four species were capable of taking advantage of the high levels of ammonium in peat substrates.
Phytosterols and their extraction from various plant matrices using supercritical carbon dioxide: a review
Authors: Uddin Md. Salim , Sarker Md. Zaidul Islam , Ferdosh Sahena , Akanda Md. Jahurul Haque , Easmin Mst. Sabina , Bt Shamsudin Siti Hadijah , Yunus Kamaruzzaman Bin 
Published: July 2014

AbstractPhytosterols provide important health benefits: in particular, the lowering of cholesterol. From environmental and commercial points of view, the most appropriate technique has been searched for extracting phytosterols from plant matrices. As a green technology, supercritical fluid extraction (SFE) using carbon dioxide (CO2) is widely used to extract bioactive compounds from different plant matrices. Several studies have been performed to extract phytosterols using supercriticalCO2(SC‐CO2) and this technology has clearly offered potential advantages over conventional extraction methods. However, the efficiency ofSFEtechnology fully relies on the processing parameters, chemistry of interest compounds, nature of the plant matrices and expertise of handling. This review coversSFEtechnology with particular reference to phytosterol extraction usingSC‐CO2. Moreover, the chemistry of phytosterols, properties of supercritical fluids (SFs) and the applied experimental designs have been discussed for better understanding of phytosterol solubility inSC‐CO2. © 2014 Society of Chemical Industry
Hg2+‐Induced In Situ Generated Radical Cation of (S)‐BINOL‐Based Polymer for Highly Enantioselective Recognition of Phenylalaninol
Authors: Jiao Jiemin , Li Fei , Zhang Shuwei , Quan Yiwu , Zheng Wenhua , Cheng Yixiang , Zhu Chengjian 
Published: July 2014

Phenylalaninol enantiomers are one of the most important chiral compounds due to its presence in biologically active molecules and pharmaceutical products. In this paper, a novel chiral fluorescence polymer sensor incorporating (S)‐BINOL and oligomeric aniline via a nucleophilic addition–elimination reaction is designed and synthesized. Polymer sensor exhibits “turn‐off” fluorescence quenching response upon the addition of Hg2+, and “turn‐on” moderate fluorescence enhancement behavior towards phenylalaninol enantiomers. Meanwhile, this kind of (S)‐BINOL‐based polymer sensor can exhibit highly selective enantioselective recognition response towards (L)‐phenylalaninol upon the addition of Hg2+ and the value of ef can reach as high as 5.4, which can be attributed to the formation of in situ generated radical cation arisen from oligomeric aniline moiety by Hg2+ induction.
image
Preparation of Core–Shell Nanofibers with Selectively Localized CNTs from Shish Kebab‐like Hierarchical Composite Micelles
Authors: Liu Chang‐Lei , Wang Mei‐Jia , Wu Gang , You Jiao , Chen Si‐Chong , Liu Ya , Wang Yu‐Zhong 
Published: July 2014

A novel and facile bottom‐up strategy for preparing core‐shell nanofibers with selectively localized carbon nanotubes is developed using hierarchical composite micelles of crystalline‐coil copolymer and carbon nanotubes as the building blocks. An amphiphilic di‐block copolymer of poly (p‐dioxanone) (PPDO) and PEG (polyethylene glycol) functionalized with pyrene moieties at the chain ends of PPDO blocks (Py‐PPDO‐b‐PEG) is designed for constructing composite micelles with multiwalled carbon nanotubes (MWCNTs). The self‐assembly of Py‐PPDO‐b‐PEG and MWCNTs is co‐induced by the crystallization of PPDO blocks and the π–π stacking interactions between pyrene moieties and MWCNTs, resulting in composite micelles with “shish kebab”‐like nanostructure. A mixture of composite micelles and polyvinyl alcohol (PVA) water solution is then used as the spinning solution for preparing electrospun nanofibers. The morphologies of the nanofibers with different composition are investigated by SEM and TEM. The results suggest that the MWCNTs selectively localized in the core of the nanofibers of MWCNTs/Py‐PPDO‐b‐PEG/PVA. The alignment and interfusion of composite micelles during the formation of nanofibers may confine the carbon nanotubes in the hydrophobic core region. In contrast, the copolymer without pyrene moieties cannot form composite micelles, thus these nanofibers show selective localization of MWCNTs in the PVA shell region.
image
Orally administered δ opioid agonist peptide rubiscolin‐6 stimulates food intake in aged mice with ghrelin resistance
Authors: Miyazaki Yuri , Kaneko Kentaro , Iguchi Shin , Mizushige Takafumi , Kanamoto Ryuhei , Yoshikawa Masaaki , Shimizu Takahiko , Ohinata Kousaku 
Published: July 2014

ScopeIt is known that a decline in food intake occurs with aging. In this study, we investigated changes in parameters associated with food intake in response to aging, and whether orexigenic peptides stimulated food intake after peripheral administration even in aged mice.Methods and resultsFood intake and body weight of 27‐month‐old male C57BL/6N mice were lower than those of 15‐month‐old mice. Epididymal and mesenteric fat mass, blood glucose, triglyceride, and leptin levels were also decreased. Meanwhile, the hypothalamic mRNA expression of endogenous orexigenic peptides such as neuropeptide Y (NPY) and agouti‐related protein, also called agouti‐related peptide, was increased. Next, we tested responsiveness to exogenously administered orexigenic peptides coupled to NPY in aged as well as young mice. Orally administered rubiscolin‐6, a δ opioid agonist hexapeptide derived from a major green leaf protein Rubisco, stimulated food intake in 27‐month‐old mice. In contrast, ghrelin was ineffective after intraperitoneal administration to aged mice, suggesting that the NPY system downstream of ghrelin but not δ opioid receptors might be impaired in aged mice.ConclusionOrally administered rubiscolin‐6 stimulates food intake in aged mice with ghrelin resistance.
Miniaturized notch‐band UWB bandpass filters using interdigital‐coupled feed‐line structure
Authors: Xu Kaida , Zhang Yonghong , Lewei Joshua , Joines William T. , Huo Qing 
Published: July 2014

ABSTRACTTwo ultrawideband (UWB) bandpass filters (BPFs) using interdigital‐coupled feed‐line structures with different notched frequency bands are presented. The proposed interdigital lines are used, not only to realize strong coupling as feed lines, but also be able to create an adjustable rejection band in the UWB passband without adding any other circuits, which make the overall size of the filter super miniaturized. Two prototypes of the proposed notch‐band UWB BPFs have been fabricated and tested, whose measured results are both in good agreement with the full‐wave simulations. The notched frequency bands of these two UWB BPFs are centered at 5.8 and 8.0 GHz, with attenuation of around 12 and 14 dB, respectively. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2215–2217, 2014
A new elliptic function band‐pass filter with adjustable size usingμ‐near zero metamaterial resonators
Authors: Park Joung‐Geun , Yoon Ki‐Cheol , Lee Jong‐Chul 
Published: July 2014

ABSTRACTIn this article, a new compact narrow bandwidth elliptic function band‐pass filter (BPF) using combination of stepped impedance resonator shaped hair‐pin, interdigital capacitor, and meander‐line resonator with μ‐near zero (MNZ) metamaterial is studied. The MNZ metamaterial resonator has band‐stop resonance and positive phase response (+90°) due to its zero‐value permeability. The experimental result of the resonator shows the loaded quality factor (QL) of 244 at the resonant frequency of 9.95 GHz. Also, the insertion and return losses of the proposed BPF are 1.55 and 15.4 dB with bandwidth of 2.5% and center frequency of 9.95 GHz, respectively. The size of the proposed BPF is 3.56 × 4.47 mm2. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2245–2248, 2014
Metamaterial based dual‐band bandpass filter design for WLAN/WiMAX applications
Authors: Gorur Ali Kursad , Karpuz Ceyhun , Ozek Ahmet , Emur Murat 
Published: July 2014

ABSTRACTThis article proposes a dual‐band bandpass filter exhibiting negative effective magnetic permeability as well as effective negative electric permittivity. The proposed filter is constructed by loaded open‐loop resonators (OLR). Input and output ports are connected to each other with a grounded feedline having two via holes located at the tapping point alignments of loading elements. Dual‐mode properties of OLRs are used to obtain the dual‐band response. Hence, each passband can be controlled individually by means of the gap between the folded parts of the OLR and the dimensions of loading elements. Four loaded OLRs are placed at the upper and lower sides of the main feedline to obtain two poles in each passband. Center frequencies of the designed filter are adjusted to 2.45 GHz (WLAN) and 3.5 GHz (WiMAX). It has an electrical length of 0.414 λg × 0.32 λg, where λg is the guided wavelength at the lowest center frequency, 2.45 GHz. Proposed filter has also been fabricated for the experimental verification of the design methodology. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2211–2214, 2014
Ultrawideband compact U‐shaped antenna with inserted narrow strip and inverted T‐shaped slot
Authors: Choe Hyeonhyeong , Lim Sungjoon 
Published: July 2014

ABSTRACTA simple and compact U‐shaped antenna with an ultrawideband characteristic is presented. The proposed antenna consists of a modified radiation patch fed by a microstrip line and a slot on the ground plane. In order to improve impedance matching at a lower band, the narrow strip is inserted at the center of the patch, and the ground plane is optimized with the inverted T‐shaped slot. Its performance is demonstrated from S‐parameters and radiation patterns. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2265–2269, 2014
A wide stopband microstrip bandpass filter with stepped coupled lines
Authors: Tang Ching‐Wen , Teng Chi‐Huan 
Published: July 2014

ABSTRACTThis study develops a microstrip bandpass filter with a broader stopband. The proposed bandpass filter is constructed by cascading three stepped coupled lines and two short‐circuited stubs. Moreover, quarter‐wavelength electrical lengths and weak strong‐weak couplings are adopted for the stepped coupled line. In this way, a compact circuit size and a wide stopband can be achieved readily. In addition, the short‐circuited stubs connected to the input/output port can result in a steeper passband skirt and a broader passband. Finally, a design example is provided to show the availability of the proposed structure. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2283–2286, 2014
A minimized broadband ferrite antenna for mobile handset applications
Authors: Kim Woo‐Su , Choi Sunho , Jeong Gye‐Taek 
Published: July 2014

ABSTRACTThis article presents a compact broadband antenna made of Co2Y hexagonal ferrite (Ba2Co0.5Zn1.5Fe12O22) for GSM/DCS/PCS/UMTS. The proposed antenna has a minimized volume of 25 × 10 × 2 mm3 using a ferrite substrate with
= 12.5 (tan
= 0.005) and
= 4 (tan
= 0.15) at 850 MHz. Additionally, a T‐monopole and capacitively coupled strip are used for bandwidth enhancement. The antenna performance is characterized in terms of the reflection coefficient, gain, and radiation pattern. The measured fractional bandwidth at a voltage standing wave ratio ≤3 is 95.7% (823–2178 MHz), and the measured peak gain at the operating frequency bands is −6.67–4.25 dBi. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2279–2282, 2014
Design of dual‐band MIMO monopole antenna with high isolation using slotted CSRR for WLAN
Authors: Yang Dae‐Geun , Kim Dang Oh , Kim Che‐Young 
Published: July 2014

ABSTRACTIn this article, we proposed a dual‐band multi‐input multi‐output (MIMO) antenna using slotted complementary split ring resonator (CSRR). The designed MIMO antenna for WLAN at 2.45 and 5 GHz provides high isolation with the slotted CSRR inserted on the ground plane. The measured gain and efficiency of the designed MIMO antenna was 4.025 dBi and 86.64%, respectively. The calculated envelope correlation coefficient of the proposed antenna was 0.016, which is suitable for a MIMO system. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2252–2257, 2014