bluuebunny/crossref_metadata_2025_split huggingface dataset:
Organic soil phosphorus considerably contributes to plant nutrition but is neglected by routine soil‐testing methods
Authors: Steffens Diedrich , Leppin Thomas , Luschin‐Ebengreuth Nora , Min Yang Zhi , Schubert Sven 
Published: August 2010

AbstractIn upper layer of arable soils, the percentage of organically bound phosphorus (P) can range from 20% to 80% of total P concentration. Approximately 40% of organic soil P is in the inositol‐P fraction. The objective of our study was to evaluate various soil‐testing methods in measuring phytate soil P as an important source of organic soil P, and to determine the bioavailability of phytate soil P for summer wheat (Triticum aestivum L.), rape (Brassica napus L.), sugar beet (Beta vulgaris L. var. altissima Döll), phacelia (Phacelia tanacetifolia L.), maize (Zea mays L.), white lupin (Lupinus albus L.), Mexican sunflower (Tithonia diversifolia Hemsley Gray), summer rye (Secale cereale L.), buckwheat (Fagopyrum esculentum L.), and pigeon pea (Cajanus cajan L.). Plants were cultivated in a growth chamber on a subsoil as a substrate with very low organic‐matter content and negligible microbial activity in order to restrict the contribution of mycorrhiza and soil microbial activity for organic–soil P mobilization. Application of organic P (100 mg P [kg soil]–1 as Na‐hexaphytate, C6H6O24P6Na12) did not result in a significant increase of extractable soil P measured with routine soil‐testing methods (CAL, DL, NaHCO3, EUF, Me‐III) although the applied organic P was available for all tested plant species. The relative P‐uptake efficiency for Na‐hexaphytate compared to Ca(H2PO4)2 was for rape, pigeon pea, and phacelia approximately 100%, for white lupin and maize 80%, for sugar beet, Mexican sunflower, wheat, and buckwheat approximately 60%, and for rye 35%. The results indicate that the bioavailability of organic soil P is not taken into account by routine soil‐testing methods.
Effects of tannic acid on gluten protein structure, dough properties and bread quality of Chinese wheat
Authors: Zhang Li , Cheng Libao , Jiang Lijun , Wang Yuesheng , Yang Guangxiao , He Guangyuan 
Published: August 2010

AbstractBACKGROUND: The effects of tannic acid, which is present in many plants, on the structure of gluten proteins and the properties of dough and bread were studied. Tannic acid was added at levels of 0.01, 0.02 and 0.03 g kg−1 during the dough‐making process.RESULTS: The added tannic acid acted negatively on disulfide bond formation but interacted with gluten proteins via other covalent bonds, as detected by UV spectroscopy and dynamic rheometry. Rheological properties and texture of the bread were measured by farinograph, extensograph and texture profile analyser. Texture analysis indicated little change in adhesiveness and resilience of the bread at all three levels of tannic acid compared with the control, but changes in hardness and chewiness of the bread made with added tannic acid indicated that tannic acid could delay bread staling.CONCLUSION: The effect of tannic acid on flour and dough is different from that of other flour redox agents. It breaks down disulfide bonds but also has positive effects on dough properties and bread quality. Disulfide bonds are commonly considered to be the most important factor affecting changes in the quality of bread. However, this study presents the new concept that other covalent bonds can also improve the quality of flour and bread and uses this property to investigate new, safe and efficient flour additives. Copyright © 2010 Society of Chemical Industry
Anatomical considerations for endoscopic endonasal skull base surgery in pediatric patients
Authors: Tatreau Jason R. , Patel Mihir R. , Shah Rupali N. , McKinney Kibwei A. , Wheless Stephen A. , Senior Brent A. , Ewend Matthew G. , Germanwala Anand V. , Ebert Charles S. , Zanation Adam M. 
Published: August 2010

AbstractObjectives/Hypothesis:Pediatric skull base surgery is limited by several boney sinonasal landmarks that must be overcome prior to tumor dissection. When approaching a sellar or parasellar tumor, the piriform aperture, sphenoid sinus pneumatization, and intercarotid distances are areas of potential limitation. Quantitative pediatric anatomical measurements relevant to skull base approaches are lacking. Our goal was to use radio‐anatomic analysis of computed tomography scans to determine anatomical limitations for trans‐sphenoidal approaches in pediatric skull base surgery.Study Design:A radio‐anatomic cross‐sectional survey.Methods:Measurements included the diameter of the piriform aperture, posterior extent of sphenoid sinus pneumatization, and intercarotid distances on fine‐cut, age‐stratified maxillofacial scans. Fifty pediatric (<18 years of age) and 10 adult patients were equally subdivided into seven age groups and compared to determine age‐related differences in sphenoid sinus pneumatization, skull base thicknesses, and intercarotid distances.Results:Piriform aperture width was significantly greater in adults than in patients under age 7 years (P ≤ .002). Three fourths of the planum and sellar face and one half of the sellar floor were pneumatized by ages 6 to 7 years. Superior clival pneumatization was not evident until 12 years of age. Clival intercarotid distances were not different among groups. Drilling distances for trans‐planar, trans‐sellar, and trans‐clival approaches are described.Conclusions:Several potential anatomic limits must be considered in pediatric skull base surgery, and these vary according to age. Piriform aperture is likely a limit only in the youngest patients (under 2 years). Sphenoid pneumatization to the planum and sella start at 3 years and complete by age 10 years. Clival intercarotid distances do not change significantly and are not prohibitively narrow in any age group. Laryngoscope, 2010
Systemic steroid reduces long‐term hearing loss in experimental pneumococcal meningitis
Authors: Worsøe Lise , Brandt Christian Thomas , Lund Søren Peter , Østergaard Christian , Thomsen Jens , Cayé‐Thomasen Per 
Published: August 2010

AbstractObjectives/Hypothesis:Sensorineural hearing loss is a common complication of pneumococcal meningitis. Treatment with corticosteroids reduces inflammatory response and may thereby reduce hearing loss. However, both experimental studies and clinical trials investigating the effect of corticosteroids on hearing loss have generated conflicting results. The objective of the present study was to determine whether systemic steroid treatment had an effect on hearing loss and cochlear damage in a rat model of pneumococcal meningitis.Study Design:Controlled animal study of acute bacterial meningitis.Methods:Adult rats were randomly assigned to two experimental treatment groups: a group treated with systemic steroid (n = 13) and a control group treated with saline (n = 13). Treatment was initiated 21 hours after infection and repeated once a day for three days. Hearing loss and cochlear damage were assessed by distortion product otoacoustic emissions (DPOAE), auditory brainstem response (ABR) at 16 kHz, and spiral ganglion neuron density.Results:Fifty‐six days after infection, steroid treatment significantly reduced hearing loss assessed by DPOAE (P < .05; Mann‐Whitney) and showed a trend toward reducing loss of viable neurons in the spiral ganglion (P = .0513; Mann‐Whitney). After pooling data from day 22 with data from day 56, we found that systemic steroid treatment significantly reduced loss of spiral ganglion neurons (P = .0098; Mann‐Whitney test).Conclusions:Systemic steroid treatment reduces long‐term hearing loss and loss of spiral ganglion neurons in experimental pneumococcal meningitis in adult rats. The findings support a beneficial role of anti‐inflammatory agents in reducing hearing loss and cochlear damage in meningitis. Laryngoscope, 2010
Selective neck dissection and deintensified postoperative radiation and chemotherapy for oropharyngeal cancer: A subset analysis of the university of pennsylvania transoral robotic surgery trial
Authors: Weinstein Gregory S. , Quon Harry , O'Malley Bert W. , Kim Grace G. , Cohen Marc A. 
Published: August 2010

AbstractObjectives/Hypothesis:The purpose of this study was to determine the regional recurrence rate of node‐positive oropharyngeal squamous cell carcinoma (OPSCC) in patients undergoing transoral robotic surgery (TORS) and selective neck dissection (SND) followed by observation, radiation, or concurrent chemoradiation.Study Design:A prospective, phase I, single‐arm study was conducted. All OPSCC patients who voluntarily participated in a surgical trial with TORS and SND at an academic tertiary referral center from May 2005 to July 2007 were included.Methods:Thirty‐one patients with previously untreated OPSCC undergoing TORS and SND (29 unilateral and two bilateral) were included. There were 29 males and two females, with ages ranging from 36 to 76 years (median = 55 years) with one palate, one lateral wall, 17 tonsil, 11 base of tongue, and one vallecula primary tumor classified as follows: T1 (n = 9, 29%), T2 (n = 15, 48.4%), T3 (n = 7, 22.6%), N0 (n = 6, 19.4%), N1 (n = 15, 48.4%), N2b (n = 10, 32.3%), and N2c (n = 1, 3.2%). There were three stage I (9.7%), two stage II (6.5%), 15 stage III (48.4%) and 11 stage IVa (35.5%) patients. Twenty‐two patients were treated postoperatively with adjuvant therapy (12 radiation alone and 12 combined radiation and chemotherapy). Primary outcome measured was regional recurrence rate.Results:There was one regional recurrence on the contralateral, non‐operated neck and one distant recurrence among the 31 patients who underwent SND.Conclusions:SND after TORS resection of primary OPSCC enables the use of selective and deintensified adjuvant therapy to reduce regional recurrence rates. Laryngoscope, 2010
Simultaneous involvement of larynx and middle ear in pulmonary tuberculosis
Authors: Parab Sapna R. , Khan Mubarak M. , Ghaisas Virendra S. 
Published: August 2010

AbstractWe present a rare case of simultaneous involvement of larynx and ear in a patient with pulmonary tuberculosis. The aim of this article is to create an awareness of Ear Nose Throat tuberculosis, and to consider tuberculosis in the differential diagnosis of ear and laryngeal diseases. Laryngoscope, 2010
Novel dual‐band hybrid coupler using improved simplified CRLH transmission line stubs
Authors: Gong Jian‐Qiang , Liang Chang‐Hong , Wu Bian 
Published: August 2010

AbstractIn this article, a novel dual‐band hybrid coupler is designed by adopting improved simplified composite right‐/left‐handed (ISCRLH) transmission line (TL) stubs.An ISCRLH TL stub is composed of two ISCRLH TL unit cells with input and output uniform TL sections at the terminals, which can produce specified impedance and phase shift at two (arbitrary) different frequencies. The conditions for synthesizing the dual‐band ISCRLH TL stub are discussed in detail, and then such a stub is applied to implement a novel dual‐band hybrid coupler in microstrip configuration, and excellent agreement between the simulated and measured results is achieved, which reveal good performance and dual‐band operation. The novel device is small, fully planar, and easily designed and fabricated. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2473–2476, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25491
Experimental investigation of the uncontrolled higher harmonic impedances effect on the performance of high‐power microwave devices
Authors: Ghannouchi Fadhel M. , Hashmi Mohammad S. 
Published: August 2010

AbstractThis article assesses and quantifies the impact of higher harmonic terminations on the current and voltage waveforms of microwave devices.Previous works have shown that it is very difficult to obtain “ideal” textbook waveforms, due to the effect of higher harmonic terminations. The emergence of waveform measurement systems has made it possible to investigate the shapes of current and voltage waveforms for design purposes. This article further expands on this issue and quantifies the impact of the uncontrolled higher harmonics on the waveforms. The impact is first explained using theory and then demonstrated with simulation and actual large‐signal measurements. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2480–2482, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25494
Wideband folded sectorial bowtie antenna with Γ‐shaped strip feed
Authors: Zhang Zhiya , Fu Guang , Gong Shuxi , Zuo Shaoli , Chen Xi , Yan Yali 
Published: August 2010

AbstractA wideband folded sectorial bowtie antenna with Γ‐shaped strip feed is designed. This feed mechanism is easy to adjust the impedance match. The folded sectorial bowtie antenna (FSBA) shows many advantages over the ordinary sectorial bowtie antenna (SBA). It achieves an impedance bandwidth of 94% for VSWR ≤ 2 ranging from 2.7 to 7.5 GHz, unidirectional radiation patterns, low back radiation, and low cross polarization over the whole operating band. The design is optimized numerically and validated experimentally. It is sufficient for accommodating recent wireless communication services such as WiFi, WiMAX, and lower UWB, etc. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2444–2447, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25495
Leaky‐wave antenna with arbitrary scan in the frequency band
Authors: Shekhar Sameer , Abbaspour‐Tamijani Abbas 
Published: August 2010

AbstractA wide‐angle frequency‐scanned leaky‐wave antenna design is presented. The proposed antenna operates in the nonfundamental mode and uses a meandered feed line to produce the exact phase‐delay relationship necessary for achieving the desired scan in the specified frequency band. Experimental results obtained for a four‐element antenna designed for the 6.05 – 6.75 GHz frequency band, show a low‐loss scanned radiation pattern in the range of ± 45°. The measured gain is 5.75 ± 0.5 dBi. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2441–2444, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25496
Ultra‐wideband pulse waveform generation based on combining subnanosecond Gaussian pulses
Authors: Protiva Pavel , Mrkvica Jan , Macháč Jan 
Published: August 2010

AbstractA technique for generating ultra‐wideband pulse waveforms is described in this article.It consists in combining subnanosecond Gaussian pulses from multiple sources. This method enables us to form complex pulse waveforms without the need to use transmission line pulse forming networks and delay lines. Two designs for an experimental generator utilizing the pulse combining principle are presented. The first generator is composed of two positive Gaussian pulsers and one negative Gaussian pulser. Analog time shifters were used to control the timing of each pulser. The circuit can be used as the generator of a Gaussian doublet. The second generator is composed of four identical Gaussian pulsers. Programmable ECL logic delay chips were employed to adjust the timing in this case. The measurements demonstrate the wide capability of the pulse combining scheme for controlling the spectral properties of the pulse waveform that is generated. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2401–2405, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25498
UHF RFID reader front‐end having wideband and stable Tx/Rx isolation characteristic
Authors: Jang Hyeong‐Seok , Lim Won‐Gyu , Yu Jong‐Won 
Published: August 2010

AbstractA UHF RFID reader front‐end structure having wideband and stable transmit/receive isolation characteristic is proposed. The proposed structure consists of a wideband balanced coupler and 4‐port feed antenna system. The wideband RFID reader front‐end has a high isolation feature insensitive to load variations. The transmit/receive isolation characteristic is achieved for UHF RFID band (860–960 MHz). The proposed structure has an isolation of more than 45 dB in the UHF RFID band according to the variations in matching and mutual coupling. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2467–2473, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25501
Optimal antenna configuration for non‐cophase equal gain combining diversity using genetic algorithm
Authors: Ngamjaroen Tanongsak , Uthansakul Peerapong , Uthansakul Monthippa 
Published: August 2010

AbstractThe equal gain combining (EGC) diversity technique is generally known to have a performance close to an optimal maximal ratio combining technique while being less complex for realization.Therefore, the implementation of EGC in practice is of interest. However, the implementation of EGC diversity is cumbersome due to additional circuitry required for making a cophase signal in each branch. As a result, it is interesting to investigate whether non‐cophase EGC diversity is able to provide an acceptable performance while keeping much greater simplicity with only marginally inferior when compared with cophase method. As there is dimension constraint on wireless terminal, the problem of how to configure multiple antennas on such a limited area is of interest. This article studies the performance of non‐cophase EGC diversity through the problem antenna configuration. The genetic algorithm (GA) technique is applied to achieve an optimal solution using the average signal‐to‐noise ratio as a fitness function. The proof of proposed method has been confirmed through simulation as well as measurement results. The investigations reveal that the antenna configuration by using optimization technique provides the best performance on limited space for non‐cophase EGC diversity. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2462–2467, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25502
A wideband‐stacked rectangular dielectric resonator antenna
Authors: Madhuri R. Gurram , Hadalgi Pradeep M. , Mallikarjun S. Lakshetty , Hunagund Prabhakar V. 
Published: August 2010

AbstractA stacked rectangular dielectric resonator antenna (DRA) is studied experimentally. The achieved impedance bandwidth of two DR stacked antenna is about 73%. By stacking two different permittivity DRs, the multi‐band of single element DRA is changed to single wideband giving out improvement in bandwidth. The antenna parameters like radiation patterns and return loss are measured and presented. These antennas may provide applications in which large bandwidth is needed. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2432–2434, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25503
The characteristic analysis of opened print slot antenna using FDTD
Authors: Shin Ho‐Sub , Jang Yong‐Woong 
Published: August 2010

AbstractIn this Letter, we analyzed a cross‐shaped‐fed opened print slot antenna using FDTD method. The VSWR, radiation patterns of this configuration are presented. The measured bandwidth of the proposed antenna is ∼ 86.1% (2.0 ≥ VSWR). The radiation pattern null of opened (etched ground plane) slot exhibited a much better than not‐opened (not etching ground plane) slot at the high frequency band. Offset and other design parameters of the antenna lead to the good impedance matching in a wide frequency band. The proposed open antenna obtained not only wide‐band but also good radiation patterns characteristics. This antenna may be applied for mobile system, WBAN, Home network, Biomedical instruments, and other wireless communication systems. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2459–2461, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25504
Compact mobile handset MIMO antenna for LTE700 applications
Authors: Bae Hongpyo , Harackiewicz Frances J. , Park Myun‐Joo , Kim Taekyun , Kim Namhoon , Kim Deokyun , Lee Byungje 
Published: August 2010

AbstractA compact mobile handset multiple‐input multiple‐output (MIMO) antenna for LTE700 applications is proposed.The proposed antenna consists of two side‐to‐side printed symmetrical printed inverted‐F antennas (PIFAs), a capacitively coupled feed, a suspended line, and a branch line. A wide impedance bandwidth at relatively lower frequency is achieved with the capacitively coupled feed. Good isolation (>12 dB) and low correlation coefficient (< 0.1) between the MIMO antennas are obtained by adding the branch line in conjunction with the suspended line. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2419–2422, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25507
Four element textile array antenna on three dimensional orthogonal woven composites
Authors: Du Cheng‐Zhu , Zhong Shun‐Shi , Yao Lan , Qiu Yi‐Ping 
Published: August 2010

AbstractA four element textile array antenna with a squint beam is proposed for aerospace applications.The patch, the substrate and the ground plane are woven together as a unity. Measured results are compared with the simulated, showing the usability of new generation of textile antenna. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2487–2488, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25508
A 1‐kW switchable damped class‐E power amplifier for plasma processing applications
Authors: Kim Ji‐Yeon , Chun Sang‐Hyun , Jang Dong‐Hee , Kim Jong‐Heon , Kennedy Gray P. 
Published: August 2010

AbstractIn this article, a new highly efficient and highly stable 1 kW power amplifier is designed and fabricated for plasma processing applications.The efficiency of the generator was improved by using a class‐E type power amplifier consisting of one push–pull MOSFET and a high‐current driver IC instead of a conventional class‐C amplifier composed of several single ended MOSFETs. A switchable damper allows a selection of one of three different amplifier modes; these modes adjust the amplifier's efficiency and stability. The amplifier dimensions were reduced by 30% compared with the conventional class‐C power amplifier. Also, a drain efficiency of 80% was produced for a generator output power of 1 kW and operating frequency of 13.56 MHz. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2438–2441, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25512
Dark soliton array generation: Theory and experiment
Authors: Vongchumyen C. , Mitatha S. , Ali J. , Yupapin P. P. 
Published: August 2010

AbstractWe present the fascinating results of dark soliton pulse array generation using the multilight sources via an optical multiplexer. The dark soliton array with different center wavelengths can be generated. The experimental setup was operated by using the brillouin‐enhanced fiber laser scheme, whereas the experimental results of the dark soliton array are generated and achieved. In application, the dark soliton array can be used to form the molecules/atom trapping array, which can be used to form the molecules/atoms memory array for molecular computer and communication. Moreover, the transmission molecules/atoms can be secured by using the dark‐bright soliton conversion behaviors. Results obtained have shown that the free spectrum range and the amplified power of 2.1 nm and 20 W of the bright soliton after dark‐bright soliton conversion with wavelength center at 1.50 μm can be achieved, respectively. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2397–2400, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25514