bluuebunny/crossref_metadata_2025_split huggingface dataset:
Compact ultrawideband bandpass filter with triple notched‐bands and sharp transmission zeros based on CSRR, DGS, AND FMRR configurations
Authors: Chiang Ching‐Tsan , Xu Jing‐Chung , Liu Ji‐Chyun 
Published: July 2014

ABSTRACTThe folded multiple‐mode resonators (FMMR) with complementary split ring resonator (CSRR), and defected ground structures (DGS) are introduced for notched‐band ultrawideband (UWB) bandpass filter design in this article. Using the CSRR, FMRR, notched wide‐band responses can exist in the UWB passband for blocking the interference. Adjusting the size factor of CSRR, the wide tuning ranges of notch frequencies included the desired frequencies of 5.2/5.8 GHz are achieved. The lower insertion loss (0.31 dB), higher rejection level (−50 dB), wider bandwidth (FBW 75%), and wider stopband (extended to 2.01 f0 below −20 dB rejection level) of UWB band at the central frequency f0 = 4.58 GHz are obtained. Second, design a CSRR, DGS, FMRR, triple notched‐band UWB filter with the wider bandwidth (2.51 to 8.03 GHz, FBW = 124%), lower insertion loss (0.36 dB), and sharp transmission zeros (−49.77/−48.40 dB) of UWB band at central frequency f0 = 4.43 GHz are presented. Using the CSRR and interdigital couple, three notch responses can exist in the UWB passband for blocking the interference signals. Adjusting the size factor of CSRR and interdigital couple, the wide tuning ranges of notched‐band included the desired frequencies of 4.80/5.20/6.38 GHz are achieved. The wide tuning ranges of three notched‐band cover from 4.2 to 6.6 GHz. The design procedure related to the geometry is proposed. It is a simple way to control the notch responses. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2324–2330, 2014
A compact dual‐band bandstop filter using a circular, folded, symmetric, meandered‐line, stepped‐impedance resonator
Authors: Dhakal Rajendra , Kim Nam‐Young 
Published: July 2014

AbstractThis letter describes the implementation of a dual‐band bandstop filter based on a circular, folded, symmetric‐type, two‐section, meandered‐line, stepped‐impedance resonator (SIR), resonating at f1 = 3.17 GHz and f2 = 8.50 GHz. The length of each section of meandered‐line is equal to 0.30 and is 0.60 times the guided wavelength (λg), which can be properly tuned to control the first and second resonant frequencies. The attenuation level of the signal at 5.83 GHz can be increased by the proper placement of transmission zero, which ultimately helps to generate a controllable ultrawide stop band bandwidth. This filter reached an attenuation level of 32.75 and 26.21 dB with insertion losses of 0.43 and 0.39 dB at the respective stop bands. The size of the filter was drastically reduced using a simplified architecture as a circular, folded, meandered‐line, SIR. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2298–2301, 2014
Circular polarization‐agile microstrip antenna for wireless access in vehicular environments
Authors: Lee D.‐H. , Chung D.‐W. , Kim E.‐G. , Pyo S. 
Published: July 2014

ABSTRACTIn this article, a new reconfigurable microstrip antenna with circular polarization‐agile capability is presented for wireless access in vehicular environments (WAVE). The proposed antenna consists of a circular microstrip radiator on a back‐sided circular slot with an adding tab and a trimmed slot with two PIN diodes. The circular slot in the ground acts as a perturbing element to generate both left‐ and right‐handed circular polarization without shifting the resonant frequency. Both of circular polarization senses can be successfully alternated by controlling the states of diodes. The implemented antenna shows a good agreement with the simulation results and excellent controllability with symmetrical radiation at the identical resonant frequency. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2310–2313, 2014
Dual‐band balun bandpass filter using coupled lines with shunt open‐ended stubs
Authors: He Yuxing , Sun Liguo 
Published: July 2014

ABSTRACTA new type of dual‐band balun bandpass filter (balun BPF) based on length reduced coupled lines and shunt open‐ended stubs is proposed in this letter to realize integration of balun and bandpass filter with dual‐band property for miniaturization and multifunction of modern RF front‐ends. Besides design details presented, a balun BPF centered at 2.45 and 5.25 GHz with a 130 MHz bandwidth of each passband is implemented by the proposed method. Desired balun‐type and filter‐type functionalities are observed at both passbands with great out‐of‐band rejection between them. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2358–2360, 2014
Design of a folded UWB MIMO antenna for an on‐body application
Authors: Joo Eunman , Kwon Kyeol , Choi Jaehoon 
Published: July 2014

ABSTRACTIn this paper, an ultra‐wideband (UWB) multiple‐input multiple‐output (MIMO) antenna for on‐body application is proposed. The proposed MIMO antenna is composed of a UWB antenna above the ground plane and an additional meander line isolator located between the two antennas to improve the isolation characteristic. Simulation and measurement were performed to analyze the effect of the human body on the antenna performance when a body is located in the near field of the antenna. The proposed folded UWB MIMO antenna has dimensions of 40 × 32 × 0.8 mm3. The fabricated antenna has a 10‐dB return loss bandwidth over the UWB lower band from 3.1 to 4.8 GHz and an isolation characteristic higher than 20 dB over the required band. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2351–2357, 2014
Split driver stages for a switching mode power amplifier with multipairs of power stages
Authors: Seo Donghwan , Park Changkun 
Published: July 2014

ABSTRACTIn this study, we analyze the effects of a power splitter on the output power and the power consumption of a CMOS power amplifier using a distributed active transformer as an output balun. On the basis of the analyzed results, we propose a split driver stage structure to mitigate the undesired effects of the conventional power splitter. In the proposed structure, the power splitter is located between the first and second driver stages to isolate the input node of the power stage from the parasitic components of the power splitter. To verify the feasibility of the proposed structure, we designed conventional and proposed 1.9‐GHz CMOS power amplifiers using 0.11‐µm RF CMOS technology. The measured efficiency and output power of the proposed amplifier are improved compared to those of the conventional amplifier. From the measured results, we successfully verify the feasibility of the proposed split driver stage structure. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2341–2345, 2014
A time‐domain equivalence principle and its marching‐on‐in‐degree solution
Authors: Shi Yan , Wang Jin , Liang Chang‐Hong 
Published: July 2014

ABSTRACTA time‐domain equivalence principle algorithm (EPA) and its marching‐on‐in‐degree‐based scheme are presented for analyzing transient electromagnetic scattering from three‐dimensional multiple metallic objects of arbitrary shapes. The equivalence principle allows the replacement of the unknown currents assigned to the original scatterer by new unknowns on the equivalence surface that encloses the scatterer. In this manner, the use of EPA reduces the number of unknowns and improves the conditioning of corresponding matrix system. With the use of weighted Laguerre polynomials as entire‐domain temporal basis functions and Galerkin temporal testing procedure, the time variable is eliminated so that the resultant matrix equations are recursively solved in term of the orders of temporal testing functions. Numerical results show good performance of proposed algorithm. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2415–2422, 2014
A wideband circularly polarized metallic cavity antenna fed with an L‐shaped probe
Authors: Liu Longsheng , Zhao Yang , Li Yue , Zhang Zhijun , Feng Zhenghe 
Published: July 2014

ABSTRACTIn this letter, a wideband circularly polarized metallic cavity antenna is designed and fabricated. To enhance both the impedance and axial‐ratio bandwidths (ARBWs), an L‐shaped probe is used to produce two orthogonal TE111 modes for left‐hand circular polarization. The measured impedance bandwidth for S11 ≤ −10 dB and 3‐dB ARBW were 1.72 GHz (20.6%, 7.48–9.2 GHz), and 1.5 GHz (17.3%, 7.9–9.4 GHz), respectively. The measured realized gain at broadside was 6.6–9.3 dBic over the overlapped impedance and AR bandwidth 1.38 GHz (16.1%, 7.9–9.28 GHz). The experimental results reveal that the proposed antenna is attractive for satellite communication applications due to its simple metallic structure, good performance, and strong power‐handling capability. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2398–2403, 2014
Experimental verification 3D subwavelength resolution beyond the diffraction limit with zone plate in millimeter wave
Authors: Minin I. V. , Minin O. V. 
Published: July 2014

ABSTRACTThe results of experimental investigations of resolution power of millimeter‐wave phase reversal binary Fresnel zone plate with short focal distance
are described. It has been experimentally shown that in the near‐field of single diffractive lens with subwavelength focal distance
without the immersion medium a resolution of 0.3–0.4
were obtained. The “Abbe barrier” can be completely broken by such diffractive lenses with unique three‐dimensional super resolution. Also it was experimentally shown the focal spot in the high numerical aperture diffractive lenses is no longer an Airy pattern and focal intensity distribution is not circularly symmetric. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2436–2439, 2014
Efficient full‐wave analysis of inverted circular microstrip antenna
Authors: Bedra Sami , Bedra Randa , Benkouda Siham , Fortaki Tarek 
Published: July 2014

ABSTRACTIn this article, a rigorous full‐wave analysis for determining the resonant frequency and half‐power bandwidth of inverted circular microstrip patch antenna is presented. Green's functions of the structure are determined in Hankel transform domain. Galerkin's is used in the resolution of the electric field integral equation. The TM set modes issued from the cavity model theory are used to expand to unknown current on the patch. The validity of the results is tested by comparing results with the experimental data. Also, numerical results for the variation of the resonant characteristics of the structure for high‐order mode, and for several values of substrates thickness are presented. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2422–2425, 2014
Synthetic control over the dynamics of mesoscaled cargo release from colloidal polymer vectors inside live cells
Authors: Chahal Harvind S. , Chahal Dev S. , McBride Patrick M. , Helms Brett A. 
Published: July 2014

ABSTRACTDirected delivery of mesoscaled cargo—for example, nanocrystals, proteins, or nucleic acids—to cells using polymer vectors impacts numerous biomedical fields. We introduce here the concept of dynamic complementarity as a simple, yet powerful approach to control the rate of mesoscaled cargo dissociation from colloidal polymer vectors once inside the cytosol. By tuning the degree of electrostatic reciprocity between the polymer vector and its cargo, it is possible to both deliver and release large cargo in live cells in a controllable manner over both long and short periods, pointing to a highly modular materials platform with molecularly tailored properties suited to task. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 256–264
Redirection of CD4+ and CD8+ T lymphocytes via a novel antibody‐based modular targeting system triggers efficient killing of PSCA+ prostate tumor cells
Authors: Arndt Claudia , Feldmann Anja , Töpfer Katrin , Koristka Stefanie , Cartellieri Marc , Temme Achim , Ehninger Armin , Ehninger Gerhard , Bachmann Michael 
Published: July 2014

BACKGROUNDThere is still a need for new therapeutic options against prostate cancer. Conventional single‐chain bispecific antibodies (bsAbs), that directly cross‐link T cells and tumor cells, hold great potential for efficient tumor treatment. However, rapid development of novel bsAbs is hampered by laborious optimization to improve their efficacy and reduce potential side effects. To accelerate the development of a novel antibody tool for the redirection of T cells to different tumor‐associated antigens, we recently introduced a modular targeting system.METHODSWe here describe a novel modular system for treatment of prostate cancer by retargeting of T cells to the prostate stem cell antigen (PSCA). Functionality of the novel PSCA‐specific modular system was investigated in vitro by T cell activation and chromium release assays as well as in immunodeficient mice.RESULTSSimilar to a conventional bsAb CD3‐PSCA, the novel PSCA‐specific modular system induces activation of both CD4+ and CD8+ T cells leading to secretion of pro‐inflammatory cytokines and highly efficient target‐specific tumor cell lysis. The novel TM was ready‐to‐use from the time point of construction and functional at low E:T ratios and picomolar concentrations without further optimization. In addition, the PSCA‐specific modular system delays outgrowth of s.c. tumors in mice comparable to bsAb CD3‐PSCA.CONCLUSIONSWe have developed a novel PSCA‐specific modular system which triggers an efficient T cell‐mediated killing of PSCA+ tumor cells in vitro and in vivo. The new Ab‐based targeting strategy can functionally replace conventional bsAbs and allows a flexible redirection of T cells to different tumor‐associated antigens. Prostate 74: 1347–1358, 2014. © 2014 Wiley Periodicals, Inc.
A provably secure identity‐based proxy ring signature based on RSA
Authors: Asaar Maryam Rajabzadeh , Salmasizadeh Mahmoud , Susilo Willy 
Published: July 2014

AbstractProxy ring (anonymous proxy) signatures allow an entity to delegate its signing capability to a group of entities (proxy group) such that only one of the members in the proxy group can generate a proxy signature on behalf of the delegator, while privacy of the proxy signer is protected. Identity‐based versions of proxy ring signatures employ identity strings in place of randomly generated public keys. Our contribution is twofold. First, we formalize a security model for identity‐based proxy ring signatures. We note that there exists no formal security model for identity‐based proxy ring signatures prior to our work. Second, we present the first provably secure identity‐based proxy ring signature scheme using a new paradigm called sequential aggregation. The construction is proved secure, under the one‐wayness assumption of RSA, in the random oracle model by presenting a new forking lemma. We should highlight that the proxy key exposure attack cannot be applied to our scheme. Further, in contrast to the existing schemes that are based on pairings, our scheme is based on RSA; therefore, it outperforms the existing schemes in terms of efficiency and practicality. Copyright © 2014 John Wiley & Sons, Ltd.
Complete closure of artificial gastric ulcer after endoscopic submucosal dissection by combined use of a single over-the-scope clip and through-the-scope clips (with videos)
Authors: Maekawa Satoshi , Nomura Ryosuke , Murase Takayuki , Ann Yasuyoshi , Harada Masaru 
Published: July 2014

Abstract

Background
A 5–7 day hospital stay is usually needed after endoscopic submucosal dissection (ESD) of gastric tumor because of the possibility of delayed perforation or bleeding. The aim of this study was to evaluate the efficacy of combined use of a single over-the-scope clip (OTSC) and through-the-scope clips (TTSCs) to achieve complete closure of artificial gastric ulcer after ESD.

Methods
We prospectively studied 12 patients with early gastric cancer or gastric adenoma. We performed complete closure of post-ESD artificial gastric ulcer using a combination of a single OTSC and TTSCs.

Results
Mean size of post-ESD artificial ulcer was 54.6 mm. The mean operating time for the closure procedure was 15.2 min., and the success rate was 91.7 % (11/12). Patients who underwent complete closure of post-ESD artificial gastric ulcer could be discharged the day after ESD and the closing procedure.

Conclusions
Complete closure of post-ESD artificial gastric ulcer using a combination of a single OTSC and TTSCs is useful for shortening the period of hospitalization and reducing treatment cost.
Lyme arthritis of the pediatric lower extremity in the setting of polyarticular disease
Authors: Aiyer Amiethab , Hennrikus William , Walrath Jessica , Groh Brandt , Ostrov Barbara 
Published: July 2014

Background Lyme arthritis can be readily treated with use of oral antibiotics without any need for surgery. In Lyme-endemic areas, differentiating between Lyme arthritis and septic arthritis can be difficult. Laboratory testing for Lyme disease often results in a delay in diagnosis because many labs batch-test Lyme specimens only two times per week due to lack of equipment or increased expense. Delayed diagnosis can lead to unneeded surgery in cases in which the surgeon indicates the patient for a joint irrigation and debridement (I & D) for possible septic arthritis while waiting for Lyme serology results. The purpose of this study was to develop an algorithm for the treatment of patients with possible Lyme arthritis, with particular attention to poly-articular involvement. Methods Thirty-nine patients with poly-articular Lyme arthritis, including ankle involvement, were reviewed retrospectively. Patients were included if the ankle was involved, if they were less than 18 years of age, and had available laboratory information and a serologic diagnosis of Lyme disease. Results Only two patients had isolated ankle involvement; of those with poly-articular involvement, 34 patients had ankle/knee involvement. Nine patients presented with pain in the ankle with passive range of motion (PROM) (22 %); two (4.8 %) had refusal to bear weight, and 10 (24 %) had an antalgic gait. All patients had a positive Western blot. Ten patients had a peripheral white blood cell (WBC) count >12,500/mm3, and 16 patients had an erythrocyte sedimentation rate (ESR) >40 mm/h. Conclusion Without immediate availability of Lyme serology, the decision to perform surgical drainage of a swollen joint in the setting of possible Lyme arthritis versus septic bacterial arthritis remains a clinical dilemma. Our data suggests that patients presenting with one or fewer Kocher criteria symptoms, poly-articular disease, and minimal pain with PROM have Lyme, rather than septic, arthritis. These patients can be treated with joint aspiration for cultures, appropriate antibiotics for Lyme disease, and careful serial exams while waiting for results of Lyme serology rather than immediate surgical I & D.
Diabetes mellitus is associated with gastroesophageal variceal bleeding in cirrhotic patients
Authors: Yang Chun‐Hsun , Chiu Yi‐Chun , Chen Chih‐Hung , Chen Chien‐Hung , Tsai Ming‐Chao , Chuah Seng‐Kee , Lee Chih‐Hsiung , Hu Tsung‐Hui , Hung Chao‐Hung 
Published: July 2014

AbstractDiabetes mellitus (DM) has been reported to increase the risk of complications of liver cirrhosis of any etiology and subsequent survival. However, the impact of DM on the development of gastroesophageal variceal bleeding (GEVB) remains unclear. We aimed to elucidate whether DM is an independent risk factor for GEVB among cirrhotic patients. A total of 146 consecutive patients with liver cirrhosis (Child‐Pugh Class A, n = 75; Class B, n = 40; and Class C, n = 31) were prospectively enrolled. Data on clinical and biochemical characteristics and history of ascites, GEVB, hepatic encephalopathy, and spontaneous bacterial peritonitis were retrospectively reviewed. Of these 146 patients, 37 (25%) had DM. Patients with DM had significantly higher ratio of Child‐Pugh Class B/C (p = 0.043), renal insufficiency (p = 0.002), and history of GEVB (p = 0.006) compared with non‐DM patients. GEVB was associated with Child‐Pugh Class B/C (p = 0.001), ascites (p = 0.002), hepatic encephalopathy (p = 0.023), and low platelet counts (p < 0.001). Based on stepwise multiple logistic regression analysis, Child‐Pugh class B/C [odds ratio (OR) = 4.90, p = 0.003] and DM (OR = 2.99, p = 0.022) were identified as independent predictors of GEVB. In the subgroup analysis, DM significantly correlated with GEVB in patients with Child‐Pugh Class A (p = 0.042), but not in patients with Child‐Pugh Class B/C (p = 0.128). DM is independently associated with GEVB in cirrhotic patients, especially in those with Child‐Pugh Class A.
Mineral inclusions in Fe–Pt solid solution from the alluvial ore occurrences of the Anabar basin (northeastern Siberian Platform)
Authors: Airiyants E.V. , Zhmodik S.M. , Ivanov P.O. , Belyanin D.K. , Agafonov L.V. 
Published: July 2014

Abstract
This study is concerned with the typochemical features of heavy-concentrate platinum from diamond placers of the Mayat-Vodorazdel’nyi site in the Anabar River basin. Platinum occurs there as Fe–Pt solid solutions (ferroan platinum of Ru–Rh specialization, ~90%), as well as minor Pd- and Ir–ferroplatinum. Among PGE minerals, Os–Ir–Ru alloys and chengdeite are revealed. Inclusions of PGE minerals are thoroughly studied, and the scales of their spread, the composition of mineral phases, and the relations between them are determined. Ruthenium-containing high-Rh ferroplatinum bears a lot of inclusions of Rh–S composition: Rh-containing PGE thiospinels and sulfides and arsenides of Rh, Ru, and Pt. In low-Rh platinum, mineral inclusions are much scarcer and usually form other parageneses. The mineral compositions in the system Rh–S–Ru indicate to the existence of a long isomorphous series Rh3S4–Ru3S4, with the content of Ru3S4 reaching 15 at.%.
The Ordovician Mukteian Horizon of the Siberian Platform: paleontological substantiation, distribution, and correlation of sections
Authors: Maslova O.A. , Yadrenkina A.G. , Kanygin A.V. 
Published: July 2014

Abstract
The new-generation regional stratigraphic chart of the Siberian Platform was accepted by the Interdepartmental Stratigraphic Committee of Russia in April 2013. Two main supplements to the chart of 1979 were made: (1) the new scale of stages, accepted by the International Commission on Stratigraphy in 2008, was presented for the Ordovician System along with the previous British standard and (2) the nomenclature of the regional stratigraphic units was supplemented by the Mukteian Horizon, which occupies an intermediate position between the Vikhorevian and Volginian Horizons. The first substantiation of the necessity of viewing this stratigraphic interval as an independent horizon was made in 1980, after it had become possible to use well cores for a more precise definition of the paleontologic characteristics and boundaries of the Vikhorevian Horizon, originally detected from several isolated sections in the Irkut amphitheater with an indistinct boundary with the overlying Volginian Horizon. Recent data, particularly those from drilling, permit a more complete paleontological substantiation of the Mukteian Horizon, consideration of its distribution in different structure-facies zones, and correlation of type sections.
Software for inversion of TEM data affected by fast-decaying induced polarization
Authors: Antonov E.Yu. , Kozhevnikov N.O. , Korsakov M.A. 
Published: July 2014

Abstract
The paper presents new software and stepwise modeling techniques for inversion of TEM data affected by fast-decaying induced polarization (IP). The software and the methods have demonstrated high efficiency when applied to detection of unfrozen ground zones (taliks) in the Pyakyakhinka oilfield and to petroleum exploration in the southern Siberian craton.