bluuebunny/crossref_metadata_2025_split huggingface dataset:
Minor salivary gland tumors of the sinonasal region: Results of a retrospective analysis with review of literature
Authors: Pantvaidya Gouri H. , Vaidya Abhishek D. , Metgudmath Rajendra , Kane Shubhada V. , D'Cruz Anil K. 
Published: January 2012

AbstractBackgroundMinor salivary gland tumors of the sinonasal region are rare. Minor salivary gland tumors of this region behave differently from other subsites in the head and neck. The objective of our study was to analyze the survival and prognostic factors in patients with minor salivary gland tumors of the sinonasal region.MethodsWe carried out a retrospective review of patients with minor salivary gland tumors of the sinonasal region. All slides were reviewed by an independent pathologist. Survival was analyzed using the Kaplan–Meier method and Cox multivariate regression to identify prognostic factors.ResultsIn all, 163 patients were identified from our registry. The 5‐year disease‐free and overall survival rates were 48.3% and 83.3%, respectively. Tumor grade, nodal status, and adjuvant radiotherapy were significant predictors of disease‐free survival (DFS), on multivariate analysis.ConclusionsMinor salivary gland tumors have a good overall survival in spite of high recurrence rates. Tumor grade, nodal status, and adjuvant radiotherapy are independent predictors of DFS. © 2012 Wiley Periodicals, Inc. Head Neck, 2012
Intraosseous carcinoma of the jaws—A clinicopathologic review. Part I: Metastatic and salivary‐type carcinomas
Authors: Woolgar Julia A. , Triantafyllou Asterios , Ferlito Alfio , Devaney Kenneth O. , Lewis James S. , Rinaldo Alessandra , Slootweg Pieter J. , Barnes Leon 
Published: January 2012

AbstractThis is the first part of a 3‐part comprehensive review of intraosseous carcinoma of the jaws. We have outlined 4 groups of intraosseous carcinoma of the jaws (metastatic, salivary‐type, odontogenic, and primary intraosseous carcinoma), emphasizing the need for accurate diagnosis and the problems associated with changing classification systems, standardization of diagnostic criteria and nomenclature, and the accuracy of existing literature. In this first part, the features of metastatic and the very rare salivary‐type carcinomas of the jaws are examined with particular emphasis on histologic and immunohistochemical characteristics, diagnostic difficulties, and uncertainties. © 2012 Wiley Periodicals, Inc. Head Neck, 2012
Intraosseous carcinoma of the jaws: A clinicopathologic review. Part III: Primary intraosseous squamous cell carcinoma
Authors: Woolgar Julia A. , Triantafyllou Asterios , Ferlito Alfio , Devaney Kenneth O. , Lewis James S. , Rinaldo Alessandra , Slootweg Pieter J. , Barnes Leon 
Published: January 2012

AbstractThis is the third part of a review of the clinicopathologic features of intraosseous carcinoma of the jaws (IOCJ). In parts 1 and 2, we discussed metastatic and salivary‐type and odontogenic carcinomas, respectively. This part deals with primary intraosseous squamous cell carcinoma. Again, based on a critical approach, we emphasize histopathologic features, diagnostic difficulties, discuss histogenesis, and highlight areas of uncertainty. The 3‐part review also offers speculations on how future studies may refine our understanding of the unusual and interesting IOCJ. © 2012 Wiley Periodicals, Inc. Head Neck, 2012
Untersuchungen zum Energiefluß in Sedimenten der Kieler Bucht
Authors: Boje‐Volkmann Sixta 
Published: January 2012

AbstractOver a course of one year total oxygen consumption of sediment cores was determined for the period of one week in a laboratory flow‐through system. The cores were collected during different months of the year and at two localities. One of the areas of investigation, at about 1 m water depth near the beach, had a carbon demand of 160 g C/m2/year. The other one, at a water depth of 11 m–a very heterogeneous sediment with a large gravel fraction — had a carbon demand of 100 g C/m2/year. As additional parameters for characterization of the sediments and interpretation of the determined metabolic rates particulate organic carbon and nitrogen, ATP, chlorophyll and pheopigments, bacterial counts and fauna composition were used. Both areas can be described as non detritus‐accumulating sediments.
Assessments of primary and bacterial production in three large mountain lakes in Alberta, Western Canada
Authors: Anderson R. S. , Dokulil M. 
Published: January 2012

AbstractPreliminary studies on production by phytoplankton and bacteria in three large mountain lakes in Alberta, Canada (two in Waterton Lakes National Park and one in Jasper National Park) were concluded mainly through the use of the14C technique. The main experiments were conducted in August, 1974, and some were repeated in August, 1975. Net primary production rates varied little from 1974 to 1975, even though there were drastic changes in the phytoplankton composition. Production in the largest lake (max. depth 135 m; mean phytoplankton production 206.5 mgC.m−2.d−1) was approximately twice that for each of the two smaller lakes (max. depths 19 and 27 m: average phytoplankton production 109 mgC.m−2.d−1). Bacterial production estimates averaged 3.8 times those for the phytoplankton production, after a proportionalety large error in the dark‐uptake technique was subtracted. High production rates in the largest lake are probably due to enrichment. Bacterial production rates are comparable to those in smaller oligotrophic lakes in Europe.
Plankton ecology in Long Pond, St. John's, Newfoundland: A polluted pond characterized by a high flushing rate
Authors: O'Connell Michael F. , Andrews Cater W. 
Published: January 2012

AbstractPlankton was studied seasonally and quantitatively in Long Pond, St. John's, Newfoundland. This pond receives both rural and urban runoff and is characterized by a high flushing rate. A comparison is made with Clarkes Pond, Hogans Pond and Bauline Long Pond. Long Pond phytoplankton was characterized by nannoplankton (particularly flagellated forms). The most important zooplankters wereBosmina coregoniandDaphnia catawba. Aspects of plankton ecology are discussed in relation to eutrophication and water renewal.
Effect of organic excretion by benthic annelida on the productivity of phytoplankton
Authors: Lacaze Jean‐Claude , de Naïde Olivier Villedon 
Published: January 2012

AbstractThe incorporation of an organic chelating agent (E. D. T. A.) in water containing the benthic polychaete Sabella pavonia for 16 hours causes an increase of 25% in primary production.
Benthic invertebrates as indicators of organic pollution in the Western Baltic Sea
Authors: Anger Klaus 
Published: January 2012

AbstractThe quantitative distribution of some important benthic invertebrates in a shallow inshore area of Kiel Bay (Western Baltic Sea) is described. This region is partly polluted by domestic sewage from the municipality of Kiel. Three groups of species are distinguished with reference to their densities and other population parameters in the different subareas: Progressive species of the 1st and 2nd order indicate a high and moderate to slight degree of pollution respectively by high population numbers. Regressive species are adverse indicators, absent or occurring in exceptionally low numbers in affected areas. In many cases the examination must be concentrated on sand bottom, because a series of species normally dwelling on aufwuchs build up dense populations in sand, if it is organically enriched.The polychaetes Capitella capitata, Nereis diversicolor and Polydora ligni are regarded as progressive species of the 1st order. The amphipods Corophium insidiosum and Gammarus salinus, the mussel Mytilus edulis, the polychaete Pygospio elegans, the snail Hydrobia ulvae, and some other invertebrates belong to the group of indicators for slight organic pollution. The main regressive species are the amphipod Bathyporeia sarsi and the mite Copidognathus fabriciusi.
Particle size selection and sediment reworking in a funnel feeder, Leptosynapta tenuis (Holothuroidea, Synaptidae)
Authors: Powell Eric N. 
Published: January 2012

AbstractThe burrowing behavior of the holothurian Leptosynapta tenuis, its lebensspuren, and the types of peristaltic waves used in movement and burrow irrigation are described. Particle size selection is a function of accessability of grains. L. tenuis cannot distinguish between particle sizes but nevertheless ingests small particles in a lesser proportion than that found in the surrounding sediment. Feeding rates are 2900–5500 g · yr−1 · animal−1. These rates are strongly dependent on temperature. Computation of a sediment mixing budget shows that of all the sediment ingested, 51% is ingested from the top 1/2 cm of sediment, 75% from the top 3 cm. The significance of the funnel as a ‘tool’ to exploit the top 1/2 cm of sediment is discussed. L. tenuis differs from other deposit feeders in that (1) it removes small particles from the surface sediment during its reworking activities, (2) it reworks sediment downward as well as upward, (3) its reworking activities tend to increase the stability of the upper 3 cm of the sediment, and (4) because so much sediment is ingested from the top 1/2 cm, it reworks an entire sediment column less efficiently per gram of sediment ingested than many other deposit feeders.
Organic matter processing by a stream‐segment ecosystem: Fort River, Massachusetts, U.S.A.
Authors: Fisher Stuart G. 
Published: January 2012

AbstractAn annual organic matter budget for a 1700 m segment of Fort River (Massachusetts, USA) is presented. Primary production in this fourth order stream exceeds litter input annually, however ecosystem P/R is 0.5. Respiration in excess of gross primary production is supported by allochthonous organic matter imported from upstream reaches. The relative contribution of organic matter size fractions to stream consumers depends upon biologic lability, rate of input, and residence time in the ecosystem. Particles of seston size (1 μm to 1 mm) are most heavily used by consumers, however dissolved organic matter represents the largest input component. Microorganisms are the predominant consumers in this soft‐water, nutrient‐poor stream ecosystem. A conceptual model for assessing the processing efficiency of stream ecosystems is presented and discussed in terms of several headwater to estuary gradients.
Microbial cellulolytic activity of the brackish water in the Tvärminne area, Northern Baltic Sea
Authors: Väätänen Pentti , Sundquist Jorma 
Published: January 2012

AbstractMicrobial cellulolytic activity was determined by an indirect method (loss of tensile strength in cotton yarn). The activity values were high in late autumn, but low in spring and early summer. The factors responsible for the seasonal variation are discussed.
Phytoplankton countings. Intercalibration results and recommendations for routine work
Authors: Hobro Ruth , Willén Eva 
Published: January 2012

AbstractIntercalibrations of phytoplankton countings were made in the Baltic in 1974 and 1975, where seven laboratories participated, each using their routine method. A statistical evaluation was made on the results, and recommendations for routine countings with the Utermöhl technique are given.
Ultrasound‐guided injection of steroid in multiple postamputation neuromas
Authors: Chen Po‐Jen , Liang Huey‐Wen , Chang Ke‐Vin , Wang Tyng‐Guey 
Published: January 2012

AbstractAfter limb amputation, neuromas may be asymptomatic when not compressed, but can cause unexplained discomfort when a prosthesis is worn. The sonographic presentation of multiple postamputation neuromas has rarely been reported. A 40‐year‐old female with a left, below‐elbow amputation suffered from late‐onset stump pain and prosthesis intolerance. Physical examination revealed a painful nodule, whereas sonographic findings disclosed three hypoechoic masses derived from the median, ulnar, and radial nerves. Marked pain reduction was reported 2 weeks after sonography‐guided steroid injection. Investigation of all damaged nerves in the residual limbs is important. © 2012 Wiley Periodicals, Inc. J Clin Ultrasound, 2013
Synthesis and Photovoltaic Properties of 1,8‐Carbazole‐Based Donor–Acceptor Type Conjugated Polymers
Authors: Fujita Hiroyuki , Michinobu Tsuyoshi 
Published: January 2012

Abstract1,8‐Diethynylcarbazole‐based conjugated polymers were synthesized by the acetylenic oxidative coupling reaction or Pd‐catalyzed Sonogashira reaction of the newly designed 3,6‐dialkylated 1,8‐diethynylcarbazole monomers. In particular, the Sonogashira polycondensation was effective for the preparation of donor–acceptor type alternating copolymers. The UV‐vis absorption and fluorescence spectra of the polymers revealed the strength of the donor–acceptor interactions as well as their self‐assembling features. The combination of electrochemical redox potentials and optical band gaps enabled the estimation of the polymer energy levels. The bulk‐heterojunction solar cells composed of these promising polymers and PCBM exhibited a photoconversion efficiency (PCE) of 0.24%. It was determined that the partial doping of the bulk‐heterojunction layer increased the open‐circuit voltage (Voc), but decreased the short‐circuit current (Jsc).
Identification of milk mixtures by 1H NMR profiling
Authors: Lamanna Raffaele , Braca Angela , Di Paolo Elvio , Imparato Giovanna 
Published: January 2012

AbstractNuclear magnetic resonance profiling, combined with a single‐layer artificial neural network, is used for the evaluation of the content of mixtures of different kinds of milk. In particular, aqueous fractions of cow and sheep milk mixtures are analyzed by 1H NMR. The spectral differences are highlighted by an analysis of the variance and a principal component analysis. The species classification problem is solved by a linear discriminant analysis. The quantification of the relative amount of the milk of two different species is then achieved by solving the appropriate multilinear problem. Copyright © 2012 John Wiley & Sons, Ltd.
Eliminating side excitations in PROPELLER‐based 2D‐selective RF excitations
Authors: Busch Martin G. , Finsterbusch Jürgen 
Published: January 2012

AbstractRecently, spatially two‐dimensional selective radiofrequency excitations based on the PROPELLER trajectory have been presented and were applied to minimize partial volume effects in single‐voxel MR spectroscopy. Thereby, residual side excitations appeared due to limitations of the Voronoi diagram that was used to consider the nonconstant sampling density, and trajectory distortions caused by eddy currents varying between the differently rotated blades. In this extension, one of the refocusing radiofrequency pulses of a PRESS‐based pulse sequence is applied in the blip direction of each segment to eliminate the side excitations. This corresponds to an infinitely dense sampling of the blade and the required sampling density correction can easily be calculated. Thus, signal contributions from outside the desired region‐of‐interest are completely avoided. The feasibility of this approach to acquire single‐voxel MR spectra of anatomically defined regions‐of‐interest is demonstrated in the human brain in vivo on a 3T whole‐body MR system. Magn Reson Med, 2012. © 2012 Wiley Periodicals, Inc.
Measurements of T1‐relaxation in ex vivo prostate tissue at 132 μT
Authors: Busch Sarah , Hatridge Michael , Mößle Michael , Myers Whittier , Wong Travis , Mück Michael , Chew Kevin , Kuchinsky Kyle , Simko Jeffry , Clarke John 
Published: January 2012

AbstractThe proton T1 was measured at 132 μT in ex vivo prostate tissue specimens from radical prostatectomies of 35 patients with prostate cancer. Each patient provided two specimens. The NMR and MRI measurements involved proton repolarization, a field of typically 150 mT and detection of the 5.6‐kHz signal with a superconducting quantum interference device. Values of T1 varied from 41 to 86 ms. Subsequently, the percentages of tissue types were determined histologically. The theoretical image contrast is quantified for each case by δ = [1 – T1(more cancer)/T1(less cancer)]. A linear fit of δ versus difference in percentage cancer yields T1 (100% cancer)/T1 (0% cancer) = 0.70 ± 0.05 with correlation coefficient R2 = 0.30. Two‐dimensional T1 maps for four specimens demonstrate variation within a single specimen. These results suggest that MR images with T1 contrast established at ultra‐low fields may discriminate prostate cancer from normal prostate tissue in vivo without a contrast agent. Magn Reson Med, 2012. © 2012 Wiley Periodicals, Inc.
Fast metabolite mapping in the pig heart after injection of hyperpolarized 13C‐pyruvate with low‐flip angle balanced steady‐state free precession imaging
Authors: Månsson Sven , Petersson J. Stefan , Scheffler Klaus 
Published: January 2012

AbstractThe conversion of hyperpolarized 13C pyruvate to metabolic products in the Krebs cycle provides valuable information about the metabolic status and the viability of the myocardium. Therefore, imaging methods must be able to spectrally discriminate different 13C metabolites. However, the requirement for spectral selectivity conflicts with the demands for rapid image acquisition and high spatial resolution in cardiac imaging. In this work, the feasibility of a balanced steady state free precession sequence with low flip angles was investigated in the pig heart after injection of hyperpolarized 13C1‐pyruvate. Using cardiac gating, it was possible to acquire 13C‐bicarbonate images within a single heartbeat (acquisition time 150 ms) without destroying the substrate signal from the hyperpolarized pyruvate. Therefore, the technique may be useful in dynamic studies of cardiac metabolism. Magn Reson Med, 2012. © 2012 Wiley Periodicals, Inc.
Factors Associated with the Severity and Progression of Self‐Reported Hand Pain and Functional Difficulty in Community‐Dwelling Older Adults: A Systematic Review
Authors: Nicholls Elaine E. , van der Windt Danielle A. W. M. , Jordan Joanne L. , Dziedzic Krysia S. , Thomas Elaine 
Published: January 2012

AbstractBackgroundHand problems are common in older adults and cause significant pain and disruption to everyday living. The aim of this systematic review was to summarize evidence on the factors associated with the severity and progression of self‐reported hand pain and functional difficulty in population‐based studies of older adults.MethodsMEDLINE, EMBASE, CINAL, BNI, AMED, HMIC, PsycINFO and ISI Web of Knowledge were searched up to January 2011 for relevant articles. The search strategy combined text words for hand, pain, function and epidemiological study. Inclusion criteria were applied and articles in the review assessed for quality using the QUality In Prognosis Studies (QUIPS) assessment tool. Data extraction included: author, year of publication, study location, participant inclusion criteria, risk factor and outcome measurement, and association with hand pain and/or function.ResultsSeven articles from five studies met the inclusion criteria from 5,679 citations. All studies were cross‐sectional and provided no information on progression of hand pain and function over time. Factors associated with limited hand function were older age, female gender, manual occupation, neck or shoulder pain, clinical and radiographic osteoarthritis, weaker hand strength, hand pain, history of Parkinson's disease, stroke, diabetes or rheumatoid arthritis, and illness perceptions (namely, frustration, impact and symptom count). Key factors associated with hand pain severity were age, impact, frustration, patient expectation of a long disease time course and self‐reported diagnosis of the cause of the hand problem.ConclusionsBoth demographic and clinical factors were found to be related to self‐reported hand pain severity and functional difficulty in older adults; however, the results were derived from a small number of studies, with no information on progression of hand pain and functional difficulty over time. Copyright © 2012 John Wiley & Sons, Ltd.
Mean cerebral blood flow measurements using phase contrast MRI in the first year of life
Authors: Varela Marta , Groves Alan M , Arichi Tomoki , Hajnal Joseph V 
Published: January 2012

Alterations in cerebral blood flow (CBF) are believed to be linked to many of the neurological pathologies that affect neonates and small infants. CBF measurements are nonetheless often difficult to perform in this population, as many techniques rely on radioactive tracers or other invasive methods. In this study, mean global CBF was measured in 21 infants under the age of one, using non‐invasive MRI techniques adapted to the neonatal population. Mean CBF was computed as the ratio of blood flow delivered to the brain (measured using phase contrast MRI) and brain volume (computed by segmenting anatomical MR images). Tests in adult volunteers and repeated measurements showed the flow measurements using the proposed method to be both accurate and reproducible. It was also found that cardiac gating need not be employed in infants with no known cardiac pathology.The developed technique can easily be appended to a neonatal MRI examination to provide rapid, robust, and non‐invasive estimates of mean CBF, thus providing a means to monitor developmental or pathology‐related alterations in cerebral perfusion and the impact of different treatment courses. In the imaged cohort, mean CBF and flow to the brain were found to rapidly increase during the first year of life (from approx. 25 to 60 ml blood/100 ml tissue/min), in good agreement with literature from other modalities where available. Mean CBF also showed a significant correlation with arterial oxygen saturation level and heart rate, but no significant correlation was found between CBF and the hematocrit or body temperature. Copyright © 2012 John Wiley & Sons, Ltd.
Health‐related quality of life among children with acute lymphoblastic leukemia
Authors: Furlong William , Rae Charlene , Feeny David , Gelber Richard D. , Laverdiere Caroline , Michon Bruno , Silverman Lewis , Sallan Stephen , Barr Ronald 
Published: January 2012

AbstractBackgroundThe objective was to quantify the health‐related quality of life (HRQL) of children treated for acute lymphoblastic leukemia (ALL) and identify specific disabilities for remediation.ProcedureTwo types of subjects were included: ALL patients 5 plus years old in a multi‐center clinical trial and general population control groups. Patients were assessed during all four major phases of active treatment and approximately 2 years after treatment. Health status and HRQL were measured using HEALTH UTILITIES INDEX® (HUI®) Mark 2 (HUI2) and Mark 3 (HUI3). HRQL scores were used to calculate quality‐adjusted life years (QALYs). Excess disability rates identified attributes for remediation.ResultsHUI assessments (n = 749) were collected during the five phases. Mean HRQL increased from induction through the post‐treatment phase (P < 0.001). There were no significant demographic or treatment effects on HRQL, except for type of asparaginase during continuation therapy (P = 0.005 for HUI2 and P = 0.007 for HUI3). Differences in mean HRQL scores between patients and controls were important (P < 0.001) during the active treatment phases but not during the post‐treatment phase. Relative to controls, patients lost approximately 0.2 QALYs during active treatment. Disability was evident in mobility/ambulation, emotion, self‐care and pain, and declined over time.ConclusionsPatients with ALL experienced important but declining deficits in HRQL during active treatment phases: Equivalent to losing approximately 2 months of life in perfect health. HRQL within the 2‐years post‐treatment phase was similar to controls. The policy challenge is to develop new treatment protocols producing fewer disabilities in mobility/ambulation, emotion, self‐care, and pain without compromising survival. Pediatr Blood Cancer 2012;59:717–724. © 2012 Wiley Periodicals, Inc.