bluuebunny/crossref_metadata_2025_split huggingface dataset:
Climate signal in the radial growth of selected coniferous species from the Forest Experimental Station in Rogów
Authors: Bijak Szymon 
Published: June 2013

Abstract
I present dendroclimatological analysis of coniferous tree species growing under the same environmental conditions in the WULS-SGGW Forest Experimental Station in Rogów (51°49' N, 19°53' E, ca. 190 m a.s.l). The study focuses on silver fir, European larch, Scots pine and Douglas fir. For each species, tree-ring width and annual sensitivity chronologies were developed for the period 1931-2010. Analysed species show considerable similarity of their radial increment course (GLK up to 67%, the t-value of 3,5-9,5). The relationship obtained for of the influence of climate conditions on radial growth of these species is typical of the relationships reported from other locations in lowland Poland. Late winter and early spring temperature, especially during February-March, is the main factor affecting tree-ring formation. The general relationship demonstrates that this seasonal thermal limitation operates at an inter-regional and interspecific level in determining the growth of coniferous tree species in Poland. Whereas, the dependence of these species on precipitation is much less significant.
Early outcome in endoscopic extended endonasal approach for removal of supradiaphragmatic craniopharyngiomas: a case series and a comprehensive review
Authors: Bosnjak Roman , Benedicic Mitja , Vittori Alenka 
Published: June 2013

Abstract
Background. The choice of endoscopic expanded endonasal approach introduces the possibility of improved gross total resection of craniopharyngioma while minimizing surgical morbidity in a significant subset of patients.
Methods. From our trans-sphenoidal surgical series of 331 cases, we retrospectively reviewed visual, endocrine and neuro-cognitive outcomes in the first consecutive eight patients (median age 63 years; range 47-73 years) with newly diagnosed supradiaphragmatic craniopharyngioma (median tumour height 23 mm; range 15-34 mm), removed by expanded endonasal approach (median follow-up 27 months; range 10-69 months). Gross total resection was attempted in all patients.
Results. Gross total resection was achieved in 6 of 8 patients. Visual improvement was present in 6 of 8 patients of patients or in 14 of 16 eyes. New endocrinopathy, including diabetes insipidus, appeared in 5 of 8 patients. Stalk was preserved in 4 patients. Cognitive decline was present in 2 cases. Five of 8 patients retained previous quality of life.
Conclusions. Our early outcome results are comparable to the recent few expanded endonasal approach series, except for the incidence of new endocrinopathy and cerebrospinal fluid leak rate. This was influenced by higher number of transinfundibular tumours in our series, where stalk preservation is less likely, and not using nasoseptal flap or gasket closure in the first half of cases. Including data from the literature and ours, expanded endonasal approach shows a trend for improved gross total resection rate with less morbidity, more obviously for visual outcome and quality of life than for endocrine outcome. However, validity of expanded endonasal approach should be confirmed in a larger number of patients with a longer follow-up period.
Role of contrast-enhanced ultrasound in evaluating the efficiency of ultrasound guided percutaneous microwave ablation in patients with renal cell carcinoma
Authors: Li Xin , Liang Ping , Yu Jie , Yu Xiao-Ling , Liu Fang-Yi , Cheng Zhi-Gang , Han Zhi-Yu 
Published: June 2013

Abstract
Background. The aim of the study was to evaluate the efficiency and feasibility of contrast-enhanced ultrasound (CEUS) with Sonovue in assessing of renal cell carcinomas (RCCs) following ultrasound (US)-guided percutaneous microwave ablation (MWA).
Patients and methods. Seventy-nine patients (60 males and 19 females) with 83 lesions (mean size 3.2±1.6 cm) were treated by US-guided percutaneous MWA. The CEUS results of the third day after the ablation were compared with the synchronous contrast-enhanced computed tomography (CT)/magnetic resonance imaging (MRI) results and biopsy pathological results. The follow-up was performed by CEUS and CT/MRI after 1, 3, 6 months and every 6 months subsequently. The combination of clinical follow-up results and CT/MRI imaging findings was the reference standard of CEUS results for evaluating the therapeutic effect. The identification of residual or recurrence tumour was assessed by two blinded radiologists.
Results. On the third day after MWA, CEUS showed 68 of 83 lesions (68/83, 81.9%) successfully ablated and 15 of 83 (18.1%) with residual tumours. Among residual tumours, 13 (86.7%) were confirmed by contrast-enhanced CT/MRI findings and biopsy results. The sensitivity, specificity, accuracy, positive and negative predictive value of CEUS evaluating the short-term MWA effectiveness were 100%, 97.1%, 97.6%, 86.7% and 100%, respectively. During the six years follow-up (median 26 months), the CEUS showed recurrence in 7 patients, and six of them achieved consistent results on CEUS and CT/MRI imaging. The sensitivity, specificity, accuracy, positive and negative predictive value for CEUS evaluating long-term MWA effectiveness were 85.7%, 98.7%, 97.6%, 85.7% and 98.7%, respectively.
Conclusions. The post-procedural CEUS demonstrated as an effective and feasible method in evaluating a therapeutic effect of RCCs following MWA.
Evaluation of a software system for estimating planned dose error in patients, based on planar IMRT QA measurements
Authors: Bakhtiari Mohammad , Parniani Ashkan , Lerma Fritz , Reynolds Shannon , Jordan James , Sedaghat Alireza , Sarfaraz Mehrdad , Rodgers James 
Published: June 2013

Abstract
Background. Intensity modulated radiation therapy (IMRT) dosimetry verification is routinely conducted via integrated or individual field dosimetry using film or a matrix of detectors. Techniques and software systems are commercially available which use individual field dosimetry measurements as input into algorithms that estimate 3D patient dose distributions on CT scan derived target volumes and organs at risk (OARs), thus allowing direct dose-volume histogram (DVH) analysis vs. treatment planning system (TPS) DVH. The purpose of this work is to present a systematic benchmarking technique to evaluate the accuracy and consistency of such a software system.
Methods. A MapCheck2 diode array and 3DVH™ software from Sun Nuclear were used for this study. Delivered planar dose was measured with the diode array as an input to 3DVH™ software that was used to estimate the 3D dose matrix. Accuracy of the output of 3DVH™ is tested by comparing measured planar doses over a range of depths to the same planes reconstructed by 3DVH™. Different fields from complex IMRT cases were selected and examined in this study. The sensitivity to depth of measurement was evaluated.
Results. The Gamma Index analysis, comparing calculated 3D dose with measured 3D dose with 2% and 2mm distance-to-agreement (DTA) criteria returned a pass rate of > 90% for all patient cases calculated by the treatment planning system and it returned a pass rate of > 96% in 9 out of 10 cases calculated by 3DVH™. Extracted computed dose planes with 3DVH™ software at different depths in the flat phantom passed all gamma evaluation analyses when compared to measured planes at different depths using MapCheck2.
Conclusions. Studying complex head and neck IMRT fields, it was shown that the 3D dose distribution predicted by the planned dose perturbation (PDP) algorithm is both accurate and consistent.
Flow structure and cooling behavior of air impingement on a target plate
Authors: Abdul Rasool Adnan , Hamad Faik 
Published: June 2013

Abstract
An experimental data of flow field, pressure coefficient and heat transfer of a jet impinging normally on a flat target plate are presented. The measurements of temperatures and static pressures were carried out for flow from three orifices of 5, 10 and 20 mm diameter for orifice-to-target plate distances of 5, 10, 25, 50, 70, 100 and 120 mm from the orifice exit. The axial development of flow structure of the jet from the orifice was investigated by measuring the radial jet velocity distributions at the same axial distances used to measure heat transfer and static pressure. The results show that pressure coefficients distributions on the target plate are similar to the velocity distributions in the impinging jet which indicates the strong relationship between the two parameters. The pressure coefficients from large orifice diameter are higher than the values from the small orifice diameter for same orifice-to-target plate distance. The results also show a nonlinear increase of heat transfer rate with orifice size and the ratio of axial distance to orifice diameter (X/d). The nonlinear behaviour may be attributed to the complex nature of flow structure at the stagnation region. The high velocity gradients at the stagnation zone leads to higher turbulence and comparatively higher values of heat transfer rates for large orifice diameter.
Essai de modélisation de la constitution des équipes entrepreneuriales
Authors: Ben-Hafaïedh Cyrine 
Published: June 2013

Les équipes entrepreneuriales sont à l’origine de près d’une création d’entreprise sur deux en France. Elles sont la clé de voûte de ces entreprises généralement plus performantes que les autres. Mais ces équipes peinent souvent à se constituer et les projets collectifs échouent fréquemment à cause des équipes qui implosent. La littérature offre deux approches théoriques, a priori opposées, de la constitution des équipes entrepreneuriales : une approche stratégique et une approche socio-psychologique. Sur la base d’une étude qualitative abductive de dix équipes entrepreneuriales, nous examinons la participation de ces deux principales approches théoriques à la compréhension du phénomène de constitution des équipes entrepreneuriales. Nous proposons, in fine, un modèle renouvelé du phénomène, plus proche de la réalité étudiée et combinant ces deux approches contrastées. Les implications managériales, en termes d’accompagnement notamment, sont soulignées.
Communautés d'affaires et réseaux sociaux : facteur de développement stratégique pour l'internationalisation des entreprises ?
Authors: Goxe François 
Published: June 2013

Ceci est un résumé de notre thèse qui conceptualise l’internationalisation comme un processus entrepreneurial de passage d’un champ social à un autre par un individu, grâce notamment à ses « réseaux ». Cette conceptualisation, appliquée aux cas d’entrepreneurs de PME françaises en Chine, révèle que : 1) Les caractéristiques personnelles ne prennent pleinement d’utilité qu’en fonction de l’accueil qui leur est fait par les acteurs établis. 2) Cet accueil dépend de l’incorporation d’un certain « esprit » (habitus) par les nouveaux venus. Le cosmopolitisme et le rejet des appartenances nationales fondent des divisions entre acteurs internationaux et expliquent en partie le succès ou l’échec des entrepreneurs. 3) L’accompagnement à l’international nécessite une sensibilisation précoce au fonctionnement des communautés étrangères et à leurs « cultures », mais surtout à la culture des communautés d’affaires internationales.
Arch Widths after Extraction and Nonextraction Treatment in Class I Patients
Authors: Shetty Vikranth , Golwalkar Sangeeta A 
Published: June 2013

ABSTRACT

Aim
To compare pretreatment and post-treatment dental arches in relation to intercanine and intermolar width changes in extraction and nonextraction treatment in class I patients.

Materials and methods
In this retrospective study pretreatment and post-treatment dental casts of 60 patients (30 extractions of first premolars and 30 nonextractions) were selected.
Anterior and posterior arch widths in the canine and molar regions from the most labial aspect of buccal surfaces, the canines and the molars were measured with the help of digital caliper on the study models and compared statistically to determine whether the dental arches were narrower after extraction treatment.

Results
At the start of the treatment there were no statistically significant differences in maxillary and mandibular intercanine widths in both groups. At the end of treatment in both the groups anterior and posterior arch width changes were not significant except for the intercanine dimension which was 0.82 mm larger (p < 0.05) in the extraction group.

Conclusion
The extraction treatment does not result in narrower dental arches than nonextraction treatment in intercanine and intermolar region.

Clinical significance
It is documented that the arch widths determine smile esthetics and treatment stability. According to the findings of the present study the arch widths in extraction treatments are not narrower than nonextraction so there will not be any compromising effects on esthetics and treatment stability.

How to cite this article
Golwalkar SA, Shetty V. Arch Widths after Extraction and Nonextraction Treatment in Class I Patients. J Contemp Dent Pract 2013;14(2):312-315.
Collision Lesion of Mandible—Coexistence of Keratocystic Odontogenic Tumor with Central Giant Cell Granuloma: A Rare Case Report
Authors: Prashanthi C , Karun Vinayak , Melkundi Mahesh , Nyamati Sanjay , HB Annapoorna 
Published: June 2013

ABSTRACT

Aim and background
An odontogenic keratocyst (OKC) or keratocystic odontogenic tumor (KCOT) and giant cell granuloma (GCG) in the jaws are common lesions which have been studied extensively in detail over the years. However, a lesion showing features of both is exceptionally rare and is reported only twice in the literature till date.

Case description
A rare case of OKC in mandible showing foci of GCG like areas is reported in a 29 years old male patient.

Conclusion
It seems to be a collision lesion, though the possibility of KCOT showing a reactive response to form giant cells or it being a rare variant cannot be totally ruled out.

Clinical significance
This entity requires aggressive treatment since biological behavior of this unique lesion is difficult to predict unless more of such lesions are reported and followed up in future.

How to cite this article
Ravi SB, Prashanthi C, Karun V, Melkundi M, Nyamati S, Annapoorna HB. Collision Lesion of Mandible: Coexistence of Keratocystic Odontogenic Tumor with Central Giant Cell Granuloma: A Rare Case Report. J Contemp Dent Pract 2013;14(2):355-359.
Abnormal Odontogenesis following Management of Childhood Cancer (Retinoblastoma): Review and a New Variant
Authors: Venkataraghavan Karthik , Guvva Sowjanya , Karthik Sandhya 
Published: June 2013

ABSTRACT
A young child being diagnosed with cancer naturally generates a pretty melancholy reaction. Each cancer can be managed with a vast array of treatment options that are available either individually or as a combination, the final goal of which is total eradication of the condition in the affected individual. Since, most of these treatments are administered during the age of tooth formation, they may affect stages of odontogenesis. Most common treatment of childhood cancers includes – chemotherapy and radiotherapy. With recent advancements in cancer therapy additional treatment options like laser therapy, radiation in the form of brachytherapy or teletherapy, cryotherapy, thermochemotherapy, etc. are available. As treatment of childhood cancers starts at a very young age coinciding with dental development, a number of dental malformations have been reported in childhood cancer survivors. The most common ocular cancer in children is retinoblastoma. This is the first such reported case and unique one where microdontia has affected all the first premolars.

How to cite this article
Venkataraghavan K, Patil S, Guvva S, Karthik S, Bhandi S. Abnormal Odontogenesis following Management of Childhood Cancer (Retinoblastoma): Review and a New Variant. J Contemp Dent Pract 2013;14(2):360-364.
Review and Update: Advanced Investigation Methods for Diagnosis of Tongue Lesions
Authors: Taneja Neeraj , Raju Srinivasa , Mehta Rajul , Kaur Navdeep 
Published: June 2013

ABSTRACTVarious specialized imaging modalities and guided microscopic methods developed in recent years, having proven value for the evaluation of tongue disorders. The list of which includes cineradiography, pulsed ultrasound, computer-assisted tomography, isotopic scanning, electromyography, magnetic resonance, video microscopy and stereo microscopy. The basic aim of the article is to review and throw light on the importance of complete examination of the tongue and application of advanced investigations for the proper diagnosis of the tongue lesions and its usefulness to the clinician.How to cite this articleTaneja N, Raju S, Mehta R, Kaur N. Review and Update: Advanced Investigation Methods for Diagnosis of Tongue Lesions. J Contemp Dent Pract 2013;14(2):365-369.
A Highly Oxidizing and Isolable Oxoruthenium(V) Complex [RuV(N4O)(O)]2+: Electronic Structure, Redox Properties, and Oxidation Reactions Investigated by DFT Calculations
Authors: Guan Xiangguo , Chan Sharon Lai‐Fung , Che Chi‐Ming 
Published: June 2013

AbstractThe electronic structure and redox properties of the highly oxidizing, isolable RuVO complex [RuV(N4O)(O)]2+, its oxidation reactions with saturated alkanes (cyclohexane and methane) and inorganic substrates (hydrochloric acid and water), and its intermolecular coupling reaction have been examined by DFT calculations. The oxidation reactions with cyclohexane and methane proceed through hydrogen atom transfer in a transition state with a calculated free energy barrier of 10.8 and 23.8 kcal mol−1, respectively. The overall free energy activation barrier (ΔG≠=25.5 kcal mol−1) of oxidation of hydrochloric acid can be decomposed into two parts: the formation of [RuIII(N4O)(HOCl)]2+ (ΔG=15.0 kcal mol−1) and the substitution of HOCl by a water molecule (ΔG≠=10.5 kcal mol−1). For water oxidation, nucleophilic attack on RuVO by water, leading to OO bond formation, has a free energy barrier of 24.0 kcal mol−1, the major component of which comes from the cleavage of the HOH bond of water. Intermolecular self‐coupling of two molecules of [RuV(N4O)(O)]2+ leads to the [(N4O)RuIVO2RuIII(N4O)]4+ complex with a calculated free energy barrier of 12.0 kcal mol−1.
Structure Determination and Total Synthesis of (+)‐16‐Hydroxy‐16,22‐dihydroapparicine
Authors: Hirose Tomoyasu , Noguchi Yoshihiko , Furuya Yujiro , Ishiyama Aki , Iwatsuki Masato , Otoguro Kazuhiko , Ōmura Satoshi , Sunazuka Toshiaki 
Published: June 2013

AbstractHerein, we describe the first asymmetric total synthesis and determination of the relative and absolute stereochemistry of naturally occurring 16‐hydroxy‐16,22‐dihydroapparicine. The key steps include 1) a novel phosphinimine‐mediated cascade reaction to construct the unique 1‐azabicyclo[4.2.2]decane core, including a pseudo‐aminal‐type moiety; 2) a highly stereospecific 1,2‐addition of 2‐acylindole or a methylketone through a Felkin–Anh transition state for the construction of a tetrasubstituted carbon center; and 3) an intramolecular chirality‐transferring Michael reaction of the ketoester, with neighboring‐group participation, to introduce a chiral center at C15 in the target molecule. In addition, we evaluated the antimalarial activity of synthetic (+)‐(15S,16R)‐16‐hydroxy‐16,22‐dihydroapparicine and its intermediate against chloroquine‐resistant Plasmodium falciparum (K1 strain) parasites.
Highly Sensitive Fluorometric Assay Method for Acetylcholinesterase Inhibitor Based on Nile Red‐Adsorbed Gold Nanoparticles
Authors: Han Wenting , Liao Shuzhen , Zhang Chonghua , Ding Huazhi , Wu Zhaoyang , Shen Guoli , Yu Ruqin 
Published: June 2013

AbstractA new sensitive fluorometric assay method for acetylcholinesterase (AChE) and its inhibitor was developed using a fluorescent dye, nile red (NR). Due to the fluorescence resonance energy transfer between the NR and the gold nanoparticle (AuNPs), the fluorescence was quenched. AChE can break down acetylthiocholine to produce a thiol‐bearing compound, thiocholine. In the presence of thiocholine, the nile red is replaced from the AuNPs surfaces and simultaneously transformed to a derivative of nile red. The fluorescence intensity of the derivative is much stronger than that of the native nile red with the same concentration and its maximum emission wavelength has a blue shift so that the sensor achieves a good signal‐to‐background ratio. In addition, when organophosphate pesticide (OPs) exists, the activity of AChE can be inhibited, the generation of thiocholine will be prevented and no fluorescence enhancement occurs. The results show that the method is sensitive to AChE and paraoxon with the detection limits of 0.2 mU/mL and 0.05 ng/mL, respectively.
Membraneless Glucose/Oxygen Enzymatic Fuel Cells Using Redox Hydrogel Films Containing Carbon Nanotubes
Authors: MacAodha Domhnall , Conghaile Peter Ó , Egan Brenda , Kavanagh Paul , Leech Dónal 
Published: June 2013

AbstractCo‐immobilisation of three separate multiple blue copper oxygenases, a Myceliophthora thermophila laccase, a Streptomyces coelicolor laccase and a Myrothecium verrucaria bilirubin oxidase, with an [Os(2,2′‐bipyridine)2(polyvinylimidazole)10Cl]+/2+ redox polymer in the presence of multi‐walled carbon nanotubes (MWCNTs) on graphite electrodes results in enzyme electrodes that produce current densities above 0.5 mA cm−2 for oxygen reduction at an applied potential of 0 V versus Ag/AgCl. Fully enzymatic membraneless fuel cells are assembled with the oxygen‐reducing enzyme electrodes connected to glucose‐oxidising anodes based on co‐immobilisation of glucose oxidase or a flavin adenine dinucleotide‐dependent glucose dehydrogenase with an [Os(4,4′‐dimethyl‐2,2′‐bipyridine)2(polyvinylimidazole)10Cl]+/2+ redox polymer in the presence of MWCNTs on graphite electrodes. These fuel cells can produce power densities of up to 145 μW cm−2 on operation in pH 7.4 phosphate buffer solution at 37 °C containing 150 mM NaCl, 5 mM glucose and 0.12 mM O2. The fuel cells based on Myceliophthora thermophila laccase enzyme electrodes produce the highest power density if combined with glucose oxidase‐based anodes. Although the maximum power density of a fuel cell of glucose dehydrogenase and Myceliophthora thermophila laccase enzyme electrodes decreases from 110 μW cm−2 in buffer to 60 μW cm−2 on testing in artificial plasma, it provides the highest power output reported to date for a fully enzymatic glucose‐oxidising, oxygen‐reducing fuel cell in artificial plasma.
Study of Low‐Voltage Ride‐Through Performance for Wind Power Generation with Doubly Fed Induction Generator
Authors: Hirawata Ryoya , Kai Takaaki 
Published: June 2013

SummaryThe introduction of wind power generation is increasing rapidly. The ratio of wind power generation to the total generation capacity is becoming higher and higher. When a phase‐to‐phase fault occurs in the power system, the frequency of the power system is lower due to disconnection of wind power generation with doubly fed induction generators (DFIG). Therefore, the power system might become unstable. This paper describes an LVRT (low‐voltage ride‐through) performance improvement scheme for wind power generation with DFIG. The wind power generator is disconnected from the grid in case of a power system fault. It is made to operate in isolation from the grid by controlling the inverters installed with the generators. After clearance of the power system fault, wind power generation is immediately reconnected to the grid. As a result, instability in the power system disappears. The performance of LVRT is confirmed by using the simulation software PSCAD/EMTDC. The simulation results show excellent results for the three‐phase short‐circuit fault with a voltage dip of 100%. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 185(1): 17–26, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22423