bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of hyaluronic acid on peripheral nerve scarring and regeneration in rats
Authors: Özgenel Güzin Yeşim 
Published: December 2003

AbstractThe purpose of this experimental study was to investigate the effects of topical applications of hyaluronic acid on peripheral nerve scarring and regeneration in an adult rat model. After the right sciatic nerves of 48 rats were transected and immediately repaired, nerves were randomly divided into two groups. Nerves to which were applied hyaluronic acid comprised the experimental group, and nerves to which were applied saline comprised the control group. Perineural scarring was evaluated at 4 and 12 weeks macroscopically and histologically. Nerves treated with hyaluronic acid demonstrated significant reduction in perineural scar thickness (P < 0.05, Student's t‐test). Histomorphologic nerve analysis, electrophysiologic studies, muscle mass evaluation, and serial functional walking‐track analysis were performed for evaluation of peripheral nerve regeneration at 12 weeks. The results showed better conduction velocities, increased axon‐fiber diameter, and faster functional recovery in hyaluronic acid‐treated nerves (P < 0.05, Student's t‐test). In conclusion, hyaluronic acid appears to be effective in preventing perineural scar formation, resulting in enhancement of peripheral nerve regeneration. © 2003 Wiley‐Liss, Inc. MICROSURGERY 23:575–581 2003
C1‐esterase inhibitor and a novel peptide inhibitor improve contractile function in reperfused skeletal muscle
Authors: Toomayan Glen A. , Chen Long‐En , Jiang Hai‐Xiang , Qi Wen‐Ning , Seaber Anthony V. , Frank Michael M. , Urbaniak James R. 
Published: December 2003

AbstractTo determine the role of inhibition of complement activation in the contractile function of skeletal muscle ischemia‐reperfusion (I/R) injury, the rat extensor digitorum longus (EDL) muscles underwent 3 h ischemia and received human C1‐esterase inhibitor (C1‐INH, 100 IU/kg), a synthetic C1q A chain peptide with a similar inhibitory effect on activated C1 (peptide, 5 mg/kg), or human serum albumin control. Results showed a significant overall increase in tetanic contractile forces of the reperfused EDL in both C1‐INH and peptide groups compared to controls. Maximum improvement occurred with peptide treatment at 120‐Hz stimulation, with an increase in force from 38 ± 4% of normal in controls to 52 ± 4% in peptide‐treated rats. There were no significant differences between C1‐INH and peptide groups. Plasma C3 and C4 activities were significantly increased in both treated groups, suggesting inhibition of complement activation. Our results suggest that complement activation is involved in I/R injury, and inhibition of complement activation may therefore represent a potential therapeutic approach to reducing or preventing I/R injury. © 2003 Wiley‐Liss, Inc. MICROSURGERY 23:561–567 2003
Comparison of different managements of large superficial veins in distally based fasciocutaneous flaps with a veno‐neuro‐adipofascial pedicle: An experimental study using a rabbit model
Authors: Chang Shi‐Min , Gu Yu‐Dong , Li Ji‐Feng 
Published: December 2003

AbstractThe role of large superficial veins in the survival of a distally based fasciocutaneous flap with a veno‐neuro‐adipofascial pedicle was studied in a rabbit model. A sural veno‐neuro‐fasciocutaneous flap model (6 × 2 cm) with a distally based lesser saphenous veno‐neuro‐adipofascial pedicle (1.5 cm) was established. Fifteen rabbits were randomly divided into three groups with 10 flaps in each group. In group I, the distal lesser saphenous vein was left open (venous inflow remained) after the flap was raised. In group II, the lesser saphenous vein was ligated in the pedicle (no venous inflow). In group III, the venous pedicle was left open in the pedicle, and the proximal end was microsurgically anastomosed to the recipient vein (outflow established). Intravenous pressure, flap survival, and histology were examined. The results showed that the values of intravenous pressure in group I were significantly higher than in group II (P < 0.001). The mean flap survival rate of group III (94.5%) was significantly higher (P < 0.001) than of groups I (22.7%) and II (55.5%). Histology showed that the lesser saphenous vein in group I was extremely dilated and filled with thrombosis. This experiment demonstrated that establishing a superficial venous outflow channel by anastomosis at the proximal end, or interrupting the inflow channel by ligation at the distal pedicle, may significantly improve the survival rate of distally based veno‐neuro‐fasciocutaneous flaps. © 2003 Wiley‐Liss, Inc. MICROSURGERY 23:555–560 2003
New experimantal composite flap model in rats: Gluteus maximus‐tensor fascia lata osteomuscle flap
Authors: Nasir Serdar , Aydin Asim , Kayikçioğlu Aycan , Sökmensüer Cenk , Çobaner Azem 
Published: December 2003

AbstractExperimental animal models need to be developed for studies of composite flaps that have often recently been used for defects of both bone and soft tissues. A consistent anatomy, simple surgical technique, and reliable blood flow are essential for the success of experimental flap studies. Here we propose a gluteus maximus‐tensor fascia lata osteomuscle flap in rats as a model of these qualities. Gluteus maximus and tensor fascia lata muscles and the adjacent iliac bone segment were combined as a lateral circumflex femoral artery‐based flap. To test the reliability of this composite flap, three types of composite tissues were harvested and replaced: osteomusculocutaneous flap, osteomuscle flap, and osteomuscle composite graft. The osteomusculocutaneous flap was elevated by including a skin island over the gluteal region. The osteomuscle graft was formed by deliberately dividing the vascular pedicle of the osteomuscle flap. Direct observation revealed complete necrosis of the skin islands in all osteomusculocutaneous flaps. Microangiography of the flap demonstrated that both muscles and the attached bone were supplied by the pedicle. Dye studies with nitro blue tetrazolium (NBT) and India ink demonstrated dye uptake in both muscle and bone components in osteomuscle flaps. Histological examinations also demonstrated the viability of both tissues only in the flap group. Bone scintigraphy performed in flaps on postoperative day 7 demonstrated radionuclide uptake, confirming perfusion of the bony segment. The gluteus maximus‐tensor fascia lata osteomuscle flap is a reliable and simple model for composite flap studies that offers the following advantages: 1) it is a new composite flap which includes bone, 2) it can be dissected easily with the naked eye, without using the microscope, 3) it has a long pedicle for flap displacement, and 4) it is a small animal model. © 2003 Wiley‐Liss, Inc. MICROSURGERY 23:582–588 2003
Microsurgical treatment for bilateral thumb defect: Five case reports
Authors: Xu Lei , Gu Yu‐Dong , Xu Jian‐Guang , Rui Yong‐Jun , Shou Kui‐Sui 
Published: December 2003

AbstractThe authors present a new and efficient treatment for reconstruction of bilateral defective thumbs by different configured toe‐tissuestransplantations in a single stage, including bilateral second‐toe transfer in 2 cases, bilateral hallux wrap‐around flap transfer in 1 case, bilateral modified hallux wrap‐around flap transfer in 1 case, and combined second toe with island flap with neurovascular pedicles from the proximal and dorsal aspect of the index finger transfer in 1 case. In total, eight transferred tissues survived uneventfully after circulation monitor and medicine administration according to the rules of microsurgery, and in two other transferred toe tissues, temporary circulation crises occurred. Over a 1‐year follow‐up, the satisfactory appearance and excellent function of the reconstructed bilateral thumbs were noted. For ensuring the success of the procedure, the authors emphasize the establishment of a double artery supply and venous return‐flow systems and the modification of the hallux wrap‐around flap dissection and tendon repair. Meanwhile, three‐stage systemically functional rehabilitations also improved functional restoration of reconstructed thumbs. © 2003 Wiley‐Liss, Inc. MICROSURGERY 23:547–554 2003
Crossover between the cell size and wavelength of the incident radiation in a metamaterial
Authors: Prati Enrico 
Published: January 2004

AbstractOne of the strongest limitations in metamaterials technology is the constraint of the lattice constant to be much smaller than the incident wavelength. This paper describes an experiment, based on SSRs at 50 GHz, to restore the resonant behavior even if such a constraint is not fulfilled, thus suggesting a way to reach infrared and visible frequencies. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 269–272, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11349
Folded‐loop antenna with a reflector for mobile handsets at 2.0 GHz
Authors: Hirata Akimasa , Adachi Takahiko , Shiozawa Toshiyuki 
Published: January 2004

AbstractA folded‐loop antenna with a reflector for mobile handsets at the 2.0‐GHz band is analyzed, taking the effect of the human head into account. The reflector is arranged between the human head and the driver. The width and height of the reflector are chosen to be slightly smaller and larger than those of the driver, respectively. Based upon numerical investigations, this antenna is found to enhance radiation efficiency by 20% and reduce peak specific absorption rates (SARs) averaged over 1 g and 10 g of tissues by 70%–85%. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 272–275, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11350
Improved impedance matrix compression (IMC) technique for efficient wavelet‐based method of moments solution of scattering problems
Authors: Sokolik Dmitry , Shifman Yair , Leviatan Yehuda 
Published: January 2004

AbstractThe iterative impedance matrix compression (IMC) method iteratively constructs and solves a reduced version of the method of moments (MoM) impedance matrix based on analysis of the error in fulfilling the original matrix equation. Hence, it is possible that some of the selected basis functions, while dominant in the analyzed error, will have very little weight in the solution itself. Here, we propose a backward elimination step, which is aimed at discarding these superfluous basis functions. To demonstrate this idea, we use the scattering problem of a TMzplane wave by a conducting cylinder of square cross‐section. The resultant compression ratio is in good agreement with the theoretical limit of the compression ratio obtained a posteriori, based on the exact MoM solution. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 275–280, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11351
Direct application of the S24 FDTD method to antenna pattern computation
Authors: Wu Wei‐Yang , Kuo Chin‐Wen 
Published: January 2004

AbstractDirectly applying the higher‐order FDTD method to the computation of antenna patterns has not been a practical approach thus far. One of the main difficulties is how to handle the perfect electric conductor (PEC), which is always present. This paper describes a procedure for handling the PEC using the S24 FDTD method, which is capable of directly computing the antenna far‐field patterns. Accuracy of the algorithm is demonstrated by comparing the antenna patterns with those calculated from the near‐to‐far field transformation and cavity model. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 289–292, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11355
Compact amplifier integrated microstrip antenna
Authors: Raj Rohith K. , Kundukulam Sona O. , Aanandan C. K. , Vasudevan K. , Mohanan P. , Kumar Praveen 
Published: January 2004

AbstractA compact microstrip antenna integrated with an amplifier having an area reduction of 70%, compared to the standard circular microstrip patch antenna, is presented. The antenna also provides an enhanced gain of 10‐dB more than its passive counter part. The measured 2:1 VSWR band width is ∼4% at 790 MHz, which is 2.5 times larger than that of the passive microstrip antenna. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 296–298, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11358
A multiple‐building diffraction attenuation function expressed in terms of UTD coefficients for microcellular communications
Authors: Rodríguez José‐Víctor , Molina‐García‐Pardo José‐María , Juan‐Llácer Leandro 
Published: January 2004

AbstractThis work presents an explicit formulation for multiple‐edge diffraction for mobile radiowave propagation in terms of uniform theory of diffraction (UTD) coefficients when a spherical incident wave is considered. This solution can be used in an UTD context and sharply reduces the computing time over existing formulation. Results can be applied in the planning of microcellular systems. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 298–300, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11359
An efficient simulation technique for lossy substrate interconnects characterization
Authors: Wu Dagang , Chen Ji 
Published: January 2004

AbstractIn this paper, an efficient numerical simulation technique is introduced to extract the propagation characteristics of interconnects over lossy substrate structures. This approach is based on a compact‐form FDFD method in conjunction with the two‐step Lanczos (TSL) technique. The efficiency and accuracy of the algorithm are demonstrated through the simulation of several lossy transmission‐line structures. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 305–308, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11362
Parametric study of compact flat antennas based on periodic patterns
Authors: Pioch S. , Laheurte J.‐M. 
Published: January 2004

AbstractThe geometry of a microstrip antenna is altered by using a periodic pattern. The aperture‐coupled antenna is realized by combining 2 × 2 unit cells in a square geometry. A 33% reduction of the resonant frequency of the original plain patch is reached by locally increasing the inductance of the unit cell. Conversely, a 60% surface reduction of dimensions of the original antenna is observed for a given operating frequency. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 311–314, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11364
L‐band gain clamped erbium‐doped fiber amplifier incorporating a C/L‐band WDM coupler
Authors: Harun S. W. , Ahmad H. 
Published: January 2004

AbstractGain clamping in a long‐wavelength‐band erbium‐doped fiber amplifier (L‐band EDFA) using a C/L‐band WDM coupler is demonstrated. The gain for the amplifier is clamped at 15.5 dB with a gain variation of less than 0.2 dB from input signal power ranging from −40 to −14 dBm with almost negligible noise‐figure penalty. However, the flatness of the gain spectrum is slightly degraded due to the nonoptimisation of the EDF length. The advantage of this configuration is that the oscillating light does not appear at the output port of the amplifier. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 314–316, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11365
Novel wideband internal chip antenna for PCS/IMT‐2000 dual‐band applications
Authors: Yim D. S. , Kim J. , Park S. O. 
Published: January 2004

AbstractA novel wideband internal chip antenna for KPCS/IMT‐2000 dual‐band applications is investigated experimentally and numerically. It has a wide bandwidth of about 21.4%, measured gain of 2.6 dBi, and an omnidirectional radiation pattern while retaining cost effectiveness and small size. These features make the proposed antenna highly suitable for handset applications. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 324–326, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11369
Metamaterial slabs coupling
Authors: Cory H. , Skorka O. 
Published: January 2004

AbstractMetamaterial slab coupling to another metamaterial slab or to a dielectric slab is studied, taking into consideration regular trigonometric modes as well as hyperbolic modes. The first TM even mode has been given special attention, since it exhibits interesting filtering properties. The coupling coefficient frequency variation of the structures has been investigated. It is found that, for a given frequency, the thinner the width of the slabs or the lower their permittivity, the higher the coupling between them. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 340–344, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11373
A printed dipole antenna with microstrip tapered balun
Authors: Chen Guan‐Yu , Sun Jwo‐Shiun 
Published: January 2004

AbstractIn this design, the dipole antenna fed network with tapered balun is studied. The design and experimental results of low profile microstrip dipole antenna with tapered balun shows fairly good performances in this paper. The feed network with wide bandwidth and low power loss tapered microstrip line to overlap coplanar stripline (CPS) transition that provided unbalanced to balanced equal power of 180° phase difference. The achieved planar dipole antenna exhibits 19% of 10‐dB bandwidth. Full wave EM analyses shows good agreement with those experimental data. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 344–346, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11374
Relationships between peer interactive play and social competence in at‐risk preschool children
Authors: Gagnon Sandra Glover , Nagle Richard J. 
Published: January 2004

AbstractRelationships between peer interactive play and social competence in a sample of preschool children (N = 85) considered at risk for academic difficulties were examined. Ratings of peer interactive play and social emotional development were collected from parents and teachers on the Penn Interactive Peer Play Scale and Vineland Social‐Emotional Early Childhood Scale. Multivariate techniques revealed significant correlations between parent and teacher ratings on the measures. Results are discussed within the context of conducting multifaceted, ecological assessments of preschool children. Implications for school psychologists are noted with regard to the important associations between peer interactive play and social–emotional development. The psychometric integrity of the PIPPS is further validated and extended beyond the initial standardization sample to include a sample of primarily Caucasian children living in a more rural area. © 2004 Wiley Periodicals, Inc. Psychol Schs 41: 173–189, 2004.
Replication of the Adjustment Scales for Children and Adolescents core syndrome factor structure
Authors: Canivez Gary L. 
Published: January 2004

AbstractIndependent examination and replication of the core syndrome factor structure of the Adjustment Scales for Children and Adolescents (ASCA; McDermott, Marston, & Stott, 1993) is reported. A sample of 1,020 children were randomly selected from their classroom and rated on the ASCA by their teacher. The six ASCA core syndromes produced a two‐factor solution through principle axis analysis using multiple criteria for the number of factors to extract and retain. Varimax, direct oblimin, and promax rotations produced identical results and nearly identical factor structure coefficients. It was concluded that the ASCA indeed measures two independent dimensions of psychopathology (Overactivity and Underactivity) that are similar to the conduct problems/externalizing and withdrawal/internalizing dimensions commonly found in the child psychopathology assessment literature (Cicchetti & Toth, 1991; Quay, 1986). © 2004 Wiley Periodicals, Inc. Psychol Schs 41: 191–199, 2004.
School psychology and issues of sexual orientation: Attitudes, beliefs, and knowledge
Authors: Savage Todd A. , Prout H. Thompson , Chard Kathleen M. 
Published: January 2004

AbstractThe purpose of this study was to investigate school psychologists' attitudes toward lesbians and gay males. Aspects of school psychologists' knowledge, beliefs, current practices, and levels of preparedness related to issues of sexual orientation were also explored. A sample of 288 school psychologists (215 females and 73 males, mean age = 44 years) who were members of NASP participated in this study. Participants completed research packets containing a hypothetical case analogue vignette and three questionnaires querying their attitudes, beliefs, and knowledge about issues of sexual orientation. The results indicated school psychologists endorse relatively positive attitudes toward lesbians and gay males, report low‐to‐moderate levels of knowledge about lesbian and gay male issues, are willing to address lesbian and gay male issues on the job, are generally aware of how such issues impact schools, and are inadequately prepared to deal with lesbian and gay male issues. These findings are discussed in relation to their impact on the field and the implications for graduate training. © 2004 Wiley Periodicals, Inc. Psychol Schs 41: 201–210, 2004.
Influences on teacher education student attitudes toward youth who are HIV+
Authors: Stinnett Terry A. , Cruce Michael K. , Choate Kurt T. 
Published: January 2004

AbstractThe expectations, attributions, and reactions toward children and youth who have contracted HIV/AIDS warrant close attention from parents, teachers, related service personnel, and others who will interact with these students in the schools. Those who are misinformed or unaware of their beliefs may inadvertently discriminate against children and youth with the disease. This study examined factors that influence judgments about children and youth with HIV/AIDS in a sample of teacher education students. Course of infection of HIV accounted for significant differences in the participants' judgments about responsibility and blame for contracting the disease and also fearfulness and attitudes reflecting isolation for these youth. Educational professionals should be aware of the many negative attributions placed on adolescents who are diagnosed as HIV+ and be prepared to act as facilitators when designing appropriate interventions to assist these students. © 2004 Wiley Periodicals, Inc. Psychol Schs 41: 211–219, 2004.
American and Chinese children's understanding of basic relational concepts in directions
Authors: Zhou Zheng , Boehm Ann E. 
Published: January 2004

AbstractTwo hundred first‐ and second‐grade Chinese children's knowledge of basic relational concepts in following directions was assessed on the Applications Booklet of the Boehm Test of Basic Concepts‐Revised (BTBC‐R, 1986). Chinese children's performance was then compared with that of the standardization sample of the BTBC‐R. Results indicated that both the American and Chinese children made significant improvements between the end of first and second grades, yet both American and Chinese children experienced difficulties on items such as following multiple‐step directions. American children, but not Chinese children, had difficulties following directions involving the concepts of right and left in combination with other relational concepts, the quantity concept of equal, and comparative and superlative features such as farther and farthest. © 2004 Wiley Periodicals, Inc. Psychol Schs 41: 261–272, 2004.