bluuebunny/crossref_metadata_2025 huggingface dataset:
Postoperative ischemic changes following resection of newly diagnosed and recurrent gliomas and their clinical relevance
Authors: Gempt Jens , Förschler Annette , Buchmann Niels , Pape Haiko , Ryang Yu-Mi , Krieg Sandro M. , Zimmer Claus , Meyer Bernhard , Ringel Florian
Published: February 2013

Object

The aim of surgical treatment of glioma is the complete resection of tumor tissue with preservation of neurological function. Inclusion of diffusion-weighted imaging (DWI) in the postoperative MRI protocol could improve the delineation of ischemia-associated postoperative neurological deficits. The present study aims to assess the incidence of infarctions following resection of newly diagnosed gliomas in comparison with recurrent gliomas and the influence on neurological function.

Methods

Patients who underwent glioma resection for newly diagnosed or recurrent gliomas had early postoperative MRI, including DWI and apparent diffusion coefficient (ADC) maps. Postoperative areas of restricted diffusion were classified as arterial territorial infarctions, terminal branch infarctions, or venous infarctions. Tumor entity, location, and neurological function were recorded.

Results

New postoperative ischemic lesions were identified in 26 (31%) of 84 patients with newly diagnosed gliomas and 20 (80%) of 25 patients with recurrent gliomas (p < 0.01). New permanent and transient neurological deficits were more frequent in patients with recurrent gliomas than in patients with newly diagnosed tumors. Patients with neurological deficits had a significantly higher rate of ischemic lesions.

Conclusions

Postoperative infarctions occur frequently in patients with newly diagnosed and recurrent gliomas and do have an impact on postoperative neurological function. In this patient cohort there was a higher risk for ischemic lesions and for deterioration of neurological function after resection of recurrent tumors. Radiogenic and postoperative tissue changes could contribute to the higher risk of an ischemic infarction in patients with recurrent tumors.
In-hospital mortality after traumatic brain injury surgery: a nationwide population-based comparison of mortality predictors used in artificial neural network and logistic regression models
Authors: Shi Hon-Yi , Hwang Shiuh-Lin , Lee King-Teh , Lin Chih-Lung
Published: February 2013

Object

Most reports compare artificial neural network (ANN) models and logistic regression models in only a single data set, and the essential issue of internal validity (reproducibility) of the models has not been adequately addressed. This study proposes to validate the use of the ANN model for predicting in-hospital mortality after traumatic brain injury (TBI) surgery and to compare the predictive accuracy of ANN with that of the logistic regression model.

Methods

The authors of this study retrospectively analyzed 16,956 patients with TBI nationwide who were surgically treated in Taiwan between 1998 and 2009. For every 1000 pairs of ANN and logistic regression models, the area under the receiver operating characteristic curve (AUC), Hosmer-Lemeshow statistics, and accuracy rate were calculated and compared using paired t-tests. A global sensitivity analysis was also performed to assess the relative importance of input parameters in the ANN model and to rank the variables in order of importance.

Results

The ANN model outperformed the logistic regression model in terms of accuracy in 95.15% of cases, in terms of Hosmer-Lemeshow statistics in 43.68% of cases, and in terms of the AUC in 89.14% of cases. The global sensitivity analysis of in-hospital mortality also showed that the most influential (sensitive) parameters in the ANN model were surgeon volume followed by hospital volume, Charlson comorbidity index score, length of stay, sex, and age.

Conclusions

This work supports the continued use of ANNs for predictive modeling of neurosurgery outcomes. However, further studies are needed to confirm the clinical efficacy of the proposed model.
Neurological sequelae from brachiocephalic vein stenosis
Authors: Herzig David W. , Stemer Andrew B. , Bell Randy S. , Liu Ai-Hsi , Armonda Rocco A. , Bank William O.
Published: February 2013

Stenosis of central veins (brachiocephalic vein [BCV] and superior vena cava) occurs in 30% of hemodialysis patients, rarely producing intracranial pathology. The authors present the first cases of BCV stenosis causing perimesencephalic subarachnoid hemorrhage and myoclonic epilepsy.

In the first case, a 73-year-old man on hemodialysis presented with headache and blurry vision, and was admitted with presumed idiopathic intracranial hypertension after negative CT studies and confirmatory lumbar puncture. The patient mildly improved until hospital Day 3, when he experienced a seizure; emergency CT scans showed perimesencephalic subarachnoid hemorrhage. Cerebral angiography failed to find any vascular abnormality, but demonstrated venous congestion. A fistulogram found left BCV occlusion with jugular reflux. The occlusion could not be reopened percutaneously and required open fistula ligation. Postoperatively, symptoms resolved and the patient remained intact at 7-month follow-up.

In the second case, a 67-year-old woman on hemodialysis presented with right arm weakness and myoclonic jerks. Admission MRI revealed subcortical edema and a possible dural arteriovenous fistula. Cerebral angiography showed venous engorgement, but no vascular malformation. A fistulogram found left BCV stenosis with jugular reflux, which was immediately reversed with angioplasty and stent placement. Postprocedure the patient was seizure free, and her strength improved. Seven months later the patient presented in myoclonic status epilepticus, and a fistulogram revealed stent occlusion. Angioplasty successfully reopened the stent and she returned to baseline; she was seizure free at 4-month follow-up.

Central venous stenosis is common with hemodialysis, but rarely presents with neurological findings. Prompt recognition and endovascular intervention can restore normal venous drainage and resolve symptoms.
Image-defined resolution following radiosurgery for hypothalamic hamartoma
Authors: O'Connor Lucy , Curl-Roper Thomas , Reeves Nicola , Kemeny Andras A. , Josan Vivek A.
Published: February 2013

The authors present the rare case of complete image-defined resolution of a hypothalamic hamartoma (HH) following Gamma Knife surgery (GKS). A 9-month-old girl presented with an episode of generalized tonic-clonic seizures. Magnetic resonance imaging revealed a left-sided HH, which remained radiologically stable. By 3 years of age the patient had a development delay of 12 months, and experienced 8 gelastic seizures per day while on 2 antiepileptic medications. Thirty-one months after presentation, the patient underwent elective GKS to treat the HH. She has since been seizure free for 22 months, while receiving 3 antiepileptic medications. Twelve months after radiosurgery, MRI revealed complete radiological resolution of the lesion. The authors discuss alternative management options for HH, including microsurgical resection, endoscopic disconnection, stereotactic radiofrequency thermocoagulation, and interstitial radiosurgery. Gamma Knife surgery is a minimally invasive procedure associated with a lower morbidity rate than that of published surgical results. The present case demonstrates the potential for complete image-defined resolution of an HH post-GKS, without long-term neurological sequelae, emphasizing the safety and efficacy of this therapeutic option for the control of epileptic seizures produced by small-volume, surgically inaccessible HHs.
Radiographic predictors of delayed instability following decompression without fusion for degenerative Grade I lumbar spondylolisthesis
Authors: Blumenthal Claire , Curran Jill , Benzel Edward C. , Potter Rachel , Magge Subu N. , Harrington J. Frederick , Coumans Jean-Valery , Ghogawala Zoher
Published: February 2013

Object

It is not known whether adding fusion to lumbar decompression is necessary for all patients undergoing surgery for degenerative lumbar spondylolisthesis with symptomatic stenosis. Determining specific radiographic traits that might predict delayed instability following decompression surgery might guide clinical decision making regarding the utility of up-front fusion in patients with degenerative Grade I spondylolisthesis.

Methods

Patients with Grade I degenerative lumbar spondylolisthesis (3–14 mm) with symptomatic stenosis were prospectively enrolled from a single site between May 2002 and September 2009 and treated with decompressive laminectomy without fusion. Patients with mechanical back pain or with gross motion (> 3 mm) on flexion-extension lumbar radiographs were excluded. The baseline radiographic variables measured included amount of slippage, disc height, facet angle, motion at spondylolisthesis (flexion-extension), and sagittal rotation angle. Data were analyzed using multivariate forward selection stepwise logistic regression, chi-square tests, Student t-test, and ANOVA.

Results

Forty patients were enrolled and treated with laminectomy without fusion, and all patients had complete radiographic data sets that were available for analysis. Reoperation was performed in 15 (37.5%) of 40 patients, with a mean follow-up duration of 3.6 years. Reoperation was performed for pain caused by instability at the index level in all 15 cases. Using multivariate stepwise logistic regression with a threshold p value of 0.35, motion at spondylolisthesis, disc height, and facet angle were predictors of reoperation following surgery. Facet angle > 50° was associated with a 39% rate of reoperation, disc height > 6.5 mm was associated with a 45% rate of reoperation, and motion at spondylolisthesis > 1.25 mm was associated with a 54% rate of reoperation. Patients with all 3 risk factors for instability had a 75% rate of reoperation, whereas patients with no risk factors for instability had a 0% rate of reoperation (p = 0.14).

Conclusions

Patients with motion at spondylolisthesis > 1.25 mm, disc height > 6.5 mm, and facet angle > 50° are more likely to experience instability following decompression surgery for Grade I lumbar spondylolisthesis. Identification of key risk factors for instability might improve patient selection for decompression without fusion surgery. Clinical trial registration no.: NCT00109213
Neck motion following multilevel anterior cervical fusion: comparison of short-term and midterm results
Authors: Wu Xiao-Dong , Yuan Wen , Chen Hua-Jiang , Chen Yu , Wang Jian-Xi , Cao Peng , Zhang Ying , Wang Xin-Wei , Yang Li-Li , Chen Yuan-Yuan , Tsai Nicholas
Published: February 2013

Object

Multilevel anterior cervical decompression and fusion is indicated for patients with multilevel compression or stenosis of the spinal cord. Some have reported that this procedure would lead to a loss of cervical range of motion (CROM). However, few studies have demonstrated the exact impact of the procedure on CROM. Here, the authors describe short- and midterm postoperative CROM following multilevel anterior cervical decompression and fusion.

Methods

Thirty-five patients underwent a 3- or 4-level anterior cervical decompression and fusion. In all patients, active CROM was measured preoperatively and at both the short-term (3–4 months) and midterm (12–15 months) follow-ups by using a CROM device. The preoperative and postoperative data were analyzed using ANOVA (α = 0.05).

Results

Patients had significantly less ROM in all planes of motion postoperatively. The greater limitation in CROM was observed at the short-term follow-up. However, at the midterm follow-up, an obvious increase in CROM was observed in each cardinal plane compared with that in the short-term (sagittal plane 17.4%, coronal plane 14.1%, and horizontal plane 19.5%). A gradual increase in the CROM in each cardinal plane was observed during the recovery period in 5 patients. In the 6 conventional motions, the major recovery of CROM was observed in flexion (27.5%), while relatively less recovery was seen in extension (10.5%).

Conclusions

Patients had an obvious reduction in active CROM following multilevel anterior cervical decompression and fusion. The greater limitation in CROM was observed at the short-term follow-up. In the midterm follow-up, however, an obvious recovery in CROM was observed in each cardinal plane, reducing the restriction of neck motion further.
Dynamik dichter, gleichförmiger Gebirgsfichtenwälder
Authors: Bebi Peter , Krumm Frank , Brändli Urs-Beat , Zingg Andreas
Published: February 2013

Dynamics of dense, uniform spruce-dominated mountain forests

Dense, uniform stands have increased in spruce-dominated mountain forests during the last century and often cause silvicultural problems. During recent years, different research activities at Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) have addressed the development of such mountain forests with or without active management. For this, plots of the Swiss National Forest Inventory (NFI) between 1983/1985 and 2004/2006 have been analysed, dendroecological methods have been used to investigate competition and selfthinning processes and a reassessment of WSL long-term investigation plots has been conducted. NFI plots of stands which have already been dense during the first inventory period generally showed increasing basal area, stagnating stem numbers, strongly increasing amounts of deadwood and slightly increasing regeneration levels, both in managed and in unmanaged stands. Dendroecological field studies confirm that trees in the generally about 80 to 150 years old stands were strongly affected by competition-induced self-thinning and subsequent small-scale mortality processes few decades after stand initiation already. WSL long-term investigation plots generally confirm this dominance of relatively small-scale processes, but also show potential for silvicultural interventions, especially in early stages of self-thinning. According to the guidelines for silvicultural intervention in forests with protective functions (NAIS), an active management of later self-thinning stages with already short crowns and higher mortality should focus on stands where risks have to be considered as too high, based on hazard and damage potential and the size of the dense, uniform stands.
'Angry Fat' and Metabolic Syndrome
Authors: Haq M Maksumul , Latif ZA
Published: February 2013

Ibrahim Cardiac Medical Journal 2011; 1(2): 5-6DOI: http://dx.doi.org/10.3329/icmj.v1i2.13543
Normal Coronary Arteries: Our Experience at Ibrahim Cardiac Hospital & Research Institute
Authors: Chowdhury Mashhud Zia , Khan Saidur Rahman , Ali Md. Liaquat , Karim Md. Rezaul , Haq M Maksumul
Published: February 2013

Ibrahim Cardiac Medical Journal 2011; 1(2): 10-14 DOI: http://dx.doi.org/10.3329/icmj.v1i2.13545
Economic Impact of Road Traffic Accident on Patients Attending at National Institute of Traumatology and Orthopedic Rehabilitation (NITOR), Dhaka
Authors: Karim Mohoshina , Khan Abdul Wadud , Farah Shayela
Published: February 2013

Ibrahim Cardiac Medical Journal 2011; 1(2): 45-49 DOI: http://dx.doi.org/10.3329/icmj.v1i2.13560
Human Papilloma Virus as a risk factor for Carcinoma of Cervix: The Gynae Practitioners' View
Authors: Fareh Shayela , Karim Mohoshina
Published: February 2013

Ibrahim Cardiac Medical Journal 2011; 1(2): 50-55 DOI: http://dx.doi.org/10.3329/icmj.v1i2.13561
Understanding Tuberculosis
Authors: Noor Fara , Choudhury Shahnaz , Choudhury SAR
Published: February 2013

Ibrahim Cardiac Medical Journal 2011; 1(2): 56-58 DOI: http://dx.doi.org/10.3329/icmj.v1i2.13562
Coronary Sinus Diverticulum Complicating CRT Device Implantation: A case repot
Authors: Taimur Syed Dawood Md. , Mansur Mahbub , Haq M Maksumul
Published: February 2013

Ibrahim Cardiac Medical Journal 2011; 1(2): 67-69 DOI: http://dx.doi.org/10.3329/icmj.v1i2.13565
On Thermodynamic Interpretation of Transfer Entropy
Authors: Prokopenko Mikhail , Lizier Joseph , Price Don
Published: February 2013

We propose a thermodynamic interpretation of transfer entropy near equilibrium, using a specialised Boltzmann’s principle. The approach relates conditional probabilities to the probabilities of the corresponding state transitions. This in turn characterises transfer entropy as a difference of two entropy rates: the rate for a resultant transition and another rate for a possibly irreversible transition within the system affected by an additional source. We then show that this difference, the local transfer entropy, is proportional to the external entropy production, possibly due to irreversibility. Near equilibrium, transfer entropy is also interpreted as the difference in equilibrium stabilities with respect to two scenarios: a default case and the case with an additional source. Finally, we demonstrated that such a thermodynamic treatment is not applicable to information flow, a measure of causal effect.
Two Examples of Exergy Optimization Regarding the “Thermo-Frigopump” and Combined Heat and Power Systems
Authors: Feidt Michel
Published: February 2013

In a recent review an optimal thermodynamics and associated new upper bounds have been proposed, but it was only relative to power delivered by engines. In fact, it appears that for systems and processes with more than one utility (mainly mechanical or electrical power), energy conservation (First Law) is limited for representing their efficiency. Consequently, exergy analysis combining the First and Second Law seems essential for optimization of systems or processes situated in their environment. For thermomechanical systems recent papers report on comparisons between energy and exergy analysis and corresponding optimization, but the proposed models mainly use heat transfer conductance modelling, except for internal combustion engine. Here we propose to reconsider direct and inverse configurations of Carnot machines, with two examples. The first example is concerned with “thermofrigo-pump” where the two utilities are hot and cold thermal exergies due to the difference in the temperature level compared to the ambient one. The second one is relative to a “combined heat and power” (CHP) system. In the two cases, the model is developed based on the Carnot approach, and use of the efficiency-NTU method to characterize the heat exchangers. Obtained results are original thermodynamics optima, that represent exergy upper bounds for these two cases. Extension of the proposed method to other systems and processes is examined, with added technical constraints or not.
Child Injury Prevention: An Overlooked Challenge for Child Survival
Authors: Meddings David
Published: February 2013

Those interested in child survival frequently cite and follow the under-five mortality rate. While a useful measure, the under-five mortality rate lumps together neonatal and post-neonatal mortality with deaths in the 1–4 year period. Unfortunately, this hampers public health decision making about the most appropriate child survival strategies as children survive beyond their first year of life. [...]
Sodium Dodecyl Sulfate (SDS)-Loaded Nanoporous Polymer as Anti-Biofilm Surface Coating Material
Authors: Li Li , Molin Soeren , Yang Liang , Ndoni Sokol
Published: February 2013

Biofilms cause extensive damage to industrial settings. Thus, it is important to improve the existing techniques and develop new strategies to prevent bacterial biofilm formation. In the present study, we have prepared nanoporous polymer films from a self-assembled 1,2-polybutadiene-b-polydimethylsiloxane (1,2-PB-b-PDMS) block copolymer via chemical cross-linking of the 1,2-PB block followed by quantitative removal of the PDMS block. Sodium dodecyl sulfate (SDS) was loaded into the nanoporous 1,2-PB from aqueous solution. The SDS-loaded nanoporous polymer films were shown to block bacterial attachment in short-term (3 h) and significantly reduce biofilm formation in long-term (1 week) by gram-negative bacterium Escherichia coli. Tuning the thickness or surface morphology of the nanoporous polymer films allowed to extent the anti-biofilm capability.
A Comparative Study of Selected Trace Element Content in Malay and Chinese Traditional Herbal Medicine (THM) Using an Inductively Coupled Plasma-Mass Spectrometer (ICP-MS)
Authors: Rasdi Fairuz , Bakar Nor , Mohamad Sharifah
Published: February 2013

A total of 60 products of traditional herbal medicine (THM) in various dosage forms of herbal preparation were analyzed to determine selected trace elements (i.e., Zn, Mn, Cu, Cd, and Se) using ICP-MS. Thirty types of both Chinese and Malay THMs were chosen to represent each population. The closed vessel acid microwave digestion method, using CEM MARS 5, was employed for the extraction of the selected trace elements. The digestion method applied was validated by using certified reference material from the Trace Element in Spinach Leaves (SRM1570a). The recoveries of all elements were found to be in the range of 85.3%–98.9%. The results indicated that Zn, Mn, Cu, Cd and Se have their own trends of concentrations in all samples studied. The daily intake concentrations of the elements were in the following order: Mn > Zn > Cu > Se > Cd. Concentrations of all five elements were found to be dominant in Chinese THMs. The essentiality of the selected trace elements was also assessed, based on the recommended daily allowance (RDA), adequate intake (AI) and the United States Pharmacopeia (USP) for trace elements as reference. The concentrations of all elements studied were below the RDA, AI and USP values, which fall within the essential concentration range, except for cadmium.
Seasonal Difference in Antioxidant Capacity and Active Compounds Contents of Eucommia ulmoides Oliver Leaf
Authors: Zhang Qiang , Su Yinquan , Zhang Jingfang
Published: February 2013

Leaf of Eucommia ulmoides Oliver (EU) is a Traditional Chinese Medicine and a functional food in China. Antioxidant contents of EU leaves, which were collected monthly during the period of May–October in three years, were determined. Samples’ antioxidant capacity was characterized by DPPH radical scavenging activity, hydroxyl radical scavenging activity, ferrous chelating ability, and antioxidant capacity in linoleic acid emulsion and in rapeseed oil assays. The results showed that contents of some active compounds and antioxidant activity were related to a certain time of the year. Samples collected in August showed high content of phenolics, and the samples collected in May contained higher amount of flavonoids than other samples. Leaves collected in May or June exhibited high contents of rutin, quercetin, geniposidic acid and aucubin. The August leaves showed stable and high DPPH radical scavenging activity, and ferrous chelating ability. May samples showed strong inhibitory effects on oxidation of rapeseed oil and linoleic acid. The DPPH radical scavenging activity was related to the total phenolics content. Flavonoids played an important role in the inhibitory effects on rapeseed oil and linoleic acid oxidation. Therefore, August and May were indicated as the best months to harvest EU leaves for industry.
Synthesis and Antiproliferative Activity of C-3 Functionalized Isobenzofuran-1(3H)-ones
Authors: Teixeira Róbson , Bressan Gustavo , Pereira Wagner , Ferreira Joana , De Oliveira Fabrício , Thomaz Deborah
Published: February 2013

A series of thirteen C-3 functionalized isobenzofuran-1(3H)-ones (phtalides) was synthesized via condensation, aromatization, and acetylation reactions. NMR (one and two dimensional experiments), IR, and mass spectrometry analysis allowed confirmation of the identity of the synthesized compounds. The substances were submitted to in vitro bioassays against U937 (lymphoma) and K562 (myeloid leukemia) cancer cell lines using the MTT cytotoxicity assay. Some derivatives inhibited 90% of cell viability at 100 µM. Also, two phtalides presented biological activity superior than that of etoposide (VP16), a commercial drug used as a positive control in the assays. In silico drug properties of the evaluated compounds were calculated and the results are discussed.
Anti-Oxidative and Cholinesterase Inhibitory Effects of Leaf Extracts and Their Isolated Compounds from Two Closely Related Croton Species
Authors: Ndhlala Ashwell , Aderogba Mutalib , Ncube Bhekumthetho , Van Staden Johannes
Published: February 2013

A comparative evaluation of the antioxidant and acetylcholinesterase inhibitory activity of the leaf extracts of Croton gratissimus and Croton zambesicus (subgratissimus) and compounds isolated from the extracts was carried out to determine their potential and suitability or otherwise as a substitute for each other in the management of oxidative and neurodegenerative conditions. Different antioxidant assays (DPPH, FRAP, β-carotene-linoleic and the lipid peroxidation models) and the microplate assay for acetylcholinesterase (AChE) inhibition were carried out separately to study the activities of the crude leaf extracts and four solvent fractions from each of the two Croton species. Bioassay guided fractionation was used to target antioxidant constituents of the crude extracts and ethyl acetate fractions of 20% aqueous methanol extract of C. gratissimus on silica gel and Sephadex LH-20 columns resulted in the isolation of kaempferol-3-O-β-6''(p-coumaroyl) glucopyranoside (tiliroside, 2), apigenin-6-C-glucoside (isovitexin, 3) and kampferol (4). The extract of C. zambesicus yielded quercetin-3-O-β-6''(p-coumaroyl) glucopyranoside-3'-methyl ether (helichrysoside- 3'-methyl ether, 1), kaempferol-3-O-β-6''(p-coumaroyl) glucopyranoside (tiliroside, 2) and apigenin-6-C-glucoside (isovitexin, 3). Three of the isolated compounds and their different combinations were also included in the bioassays. In all the assays performed, the antioxidant capacity and AChE inhibitory effects of C. zambesicus extracts were weaker than those of C. gratissimus. This suggests that C. gratissimus may not be substituted by C. zambesicus, despite the similarity in some of their constituents. Generally, the combinations made from the isolated compounds showed better activities in most of the assays compared to the individual isolated compounds. This suggests mechanisms such as synergism and/or additive effects to be taking place. This study established low, moderate and high antioxidant activities as well as AChE inhibitory effects by the crude extracts, fractions, compounds and compound combinations. This means some of the extracts, isolated compounds and compound combinations could be useful in the management of neurodegenerative conditions and serve as sources of natural neurodegenerative agents.
Assembl y of Poly-3-Hexylthiophene Nano-Crystallites into Low Dimensional Structures Using Indandione Derivatives
Authors: Cheval Nicolas , Kampars Valdis , Fowkes Clifford , Shirtcliffe Neil , Fahmi Amir
Published: February 2013

Conductive polymer poly-3-hexylthiophene (P3HT) needles were self-assembled using a second component (indandione derivatives) as a linking agent to enhance their long range alignment. The morphologies of the hybrid organic/organic materials were characterized by transmission electron microscopy (TEM). Both linear and branched structures could be produced, with the degree of branching depending upon the linker used. Incorporation of indandione derivatives broadened the UV absorbance band of P3HT without significant change to its photoluminescence. This hybrid material could open a promising avenue in photovoltaic applications due to its interesting morphologies and optical properties.
Visible/Near Infrared Spectroscopy and Chemometrics for the Prediction of Trace Element (Fe and Zn) Levels in Rice Leaf
Authors: Shao Yongni , He Yong
Published: February 2013

Two sensitive wavelength (SW) selection methods combined with visible/near infrared (Vis/NIR) spectroscopy were investigated to determine the levels of some trace elements (Fe, Zn) in rice leaf. A total of 90 samples were prepared for the calibration (n = 70) and validation (n = 20) sets. Calibration models using SWs selected by LVA and ICA were developed and nonlinear regression of a least squares-support vector machine (LS-SVM) was built. In the nonlinear models, six SWs selected by ICA can provide the optimal ICA-LS-SVM model when compared with LV-LS-SVM. The coefficients of determination (R2), root mean square error of prediction (RMSEP) and bias by ICA-LS-SVM were 0.6189, 20.6510 ppm and −12.1549 ppm, respectively, for Fe, and 0.6731, 5.5919 ppm and 1.5232 ppm, respectively, for Zn. The overall results indicated that ICA was a powerful way for the selection of SWs, and Vis/NIR spectroscopy combined with ICA-LS-SVM was very efficient in terms of accurate determination of trace elements in rice leaf.
A Silicon Carbide Wireless Temperature Sensing System for High Temperature Applications
Authors: Yang Jie
Published: February 2013

In this article, an extreme environment-capable temperature sensing system based on state-of-art silicon carbide (SiC) wireless electronics is presented. In conjunction with a Pt-Pb thermocouple, the SiC wireless sensor suite is operable at 450 °C while under centrifugal load greater than 1,000 g. This SiC wireless temperature sensing system is designed to be non-intrusively embedded inside the gas turbine generators, acquiring the temperature information of critical components such as turbine blades, and wirelessly transmitting the information to the receiver located outside the turbine engine. A prototype system was developed and verified up to 450 °C through high temperature lab testing. The combination of the extreme temperature SiC wireless telemetry technology and integrated harsh environment sensors will allow for condition-based in-situ maintenance of power generators and aircraft turbines in field operation, and can be applied in many other industries requiring extreme environment monitoring and maintenance.
Myokard-Perfusions-Szintigraphie
Authors: Burchert W. , Hacker M. , Schaefer W. , Schmidt M. , Schober O. , Schwaiger M. , vom Dahl J. , Zimmermann R. , Schäfers M. , Lindner O.
Published: February 2013

Diese Leitlinie ist die Kurzfassung der bei der Arbeitsgemeinschaft der Wissenschaftlichen Medizinischen Fachgesellschaften (AWMF) publizierten Leitlinie zur Myokard-Perfusions-Szintigraphie. Sie soll eine praxisorientierte Hilfestellung zur Indikation, Durchführung und Auswertung der Myokard-Perfusions-Szintigraphie geben und den aktuellen Stand des Verfahrens darstellen.

Nach der Einführung in die Grundlagen folgen konkrete und detaillierte Angaben zur Indikationsstellung, zur Untersuchungsvorbereitung, zu Belastungsverfahren, Radiopharmaka, Akquisitionsprotokollen und -techniken, Strahlenexposition, Datenrekonstruktion sowie zur visuellen und quantitativen Bildanalyse und -interpretation. Zusätzlich werden Fehlerquellen behandelt und Grundelemente des Befundberichtes aufgezeigt.
Synthesis and testing of the first azobenzene mannobioside as photoswitchable ligand for the bacterial lectin FimH
Authors: Chandrasekaran Vijayanand , Kolbe Katharina , Beiroth Femke , Lindhorst Thisbe K
Published: February 2013

In order to allow spatial and temporal control of carbohydrate-specific bacterial adhesion, it has become our goal to synthesise azobenzene mannosides as photoswitchable inhibitors of type 1 fimbriae-mediated adhesion ofE. coli. An azobenzene mannobioside2was prepared and its photochromic properties were investigated. TheE→Zisomerisation was found to be highly effective, yielding a long-lived (Z)-isomer. Both isomers,EandZ, show excellent water solubility and were tested as inhibitors of mannoside-specific bacterial adhesion in solution. Their inhibitory potency was found to be equal and almost two orders of magnitude higher than that of the standard inhibitor methyl mannoside. These findings could be rationalised on the basis of computer-aided docking studies. The properties of the new azobenzene mannobioside have qualified this glycoside to be eventually employed on solid support, in order to fabricate photoswitchable adhesive surfaces.
La construction du sujet souffrant au travail au travers des instruments scientifiques de mesure
Authors: Allard-Poesi Florence , Hollet-Haudebert Sandrine
Published: February 2013

Résumé S’inscrivant dans une perspective foucaldienne, cette recherche a pour objectif de cerner les traits et caractéristiques essentiels du sujet que construisent les méthodes scientifiques d’évaluation de la souffrance au travail. Empruntant une démarche qualitative, nous analysons en profondeur sept échelles d’auto-évaluation de la souffrance au travail couramment utilisées en management. Notre recherche montre que 1/ ces échelles véhiculent, à l’instar d’autres techniques de mesure utilisées en gestion des ressources humaines (cf. Townley, 1993 ; Pezet, 2007), les idées d’un individu calculable et comptable de lui-même. Elle précise ce second aspect en montrant que les échelles d’évaluation de souffrance construisent un individu 2/ capable d’enregistrer et d’évaluer les évènements qui l’affectent et 3/ qui entretient des relations instrumentales avec le monde et les autres. Notre recherche montre enfin que 4/ la souffrance ne paraît pas tant importer pour elle-même qu’en tant qu’elle est susceptible de réduire l’activité du sujet souffrant. Les échelles d’évaluation de la souffrance fabriquent ainsi un sujet qui, s’il est rationnel, n’a aucune prise sur son environnement de travail. En s’intéressant à la manière dont les échelles de mesure voient le sujet souffrant, notre recherche complète les travaux s’inscrivant dans une perspective critique de la santé au travail qui ont principalement cherché à mettre en lumière les points aveugles des recherches orthodoxes. Nos résultats précisent ainsi les traits de l’individu ‘comptable’ mis en évidence par les recherches antérieures et permettent de contraster ces traits d’avec ceux de l’individu libre, ‘entrepreneur de lui-même’ véhiculé par les discours managériaux (Rose, 1999). Les conséquences théoriques, méthodologiques et pratiques de ces résultats sont envisagées.
Les stratégies de reconversion des sportifs professionnels : une lecture par les carrières intelligentes
Authors: Fabre Catherine , Gatignon Turnau Anne-Laure , Ventolini Séverine
Published: February 2013

Résumé La fin de carrière sportive intervient souvent prématurément pour les joueurs professionnels et il semble important que ces sportifs préparent leur seconde partie de carrière. À travers la grille de lecture des carrières intelligentes (Arthur et al., 1995) et une approche subjective de la carrière (Parker, 2002, 2009), cet article s’interroge sur les stratégies mises en œuvre par les joueurs pour préparer leur reconversion professionnelle. À partir de l’analyse du cas des joueurs de rugby professionnels, cette étude présente une typologie des différentes stratégies menées par les sportifs et identifie des facteurs d’adoption de celles-ci.
L'invention d'une vie d'artiste. Stratégie identitaire et élargissement de la critique chez John Ruskin
Authors: Delmas Corinne
Published: February 2013

Résumé J. Ruskin élargit la critique d’art à la critique sociale, toutes deux s’inscrivant dans la croyance en l’existence d’un ordre universel. Croiser l’analyse de l’œuvre et de l’auteur peut permettre de cerner comment cet auteur s’approprie la tradition romantique de la période précédente jusqu’à donner une consistance nouvelle à la figure de l’artiste romantique. Ruskin développe une théorie de la contemplation esthétique et de la créativité qui laisse une large place au concept de « génie » et cette figure de l’artiste idéal n’est pas sans présenter d’étranges analogies avec la personnalité de Ruskin qui est lui-même un « watcher », un être dont toute la passion semble convertie en souci d’investigation, d’observation, et qui semble projeter dans sa vision de l’artiste sa propre situation de solitaire et son sens de l’exemplarité. Notre hypothèse est que l’œuvre, le travail intellectuel et d’écriture permettent à Ruskin, blessé narcissiquement et à l’identité problématique, de restaurer l’estime de soi. Nous interrogeons la manière dont s’articulent ici stratégie identitaire et estime de soi.
Carnet de rencontres en Afghanistan. Kaboul, juillet 2002
Authors: Moro Marie Rose
Published: February 2013

Résumé L’auteur fait revivre des rencontres avec des femmes, des hommes, des bébés, des enfants ou des adolescents vivant à Kaboul aujourd’hui. Après vingt-cinq ans de guerre, ils disent leurs souffrances, leurs pertes mais aussi leurs envies et leurs forces. Ces rencontres ont eu lieu dans le cadre d’une évaluation demandée par Médecins Sans Frontières, mission qui a abouti à l’ouverture d’une consultation psychologique pour les enfants et leurs familles ayant souffert de la guerre dans un quartier azara de Kaboul (le quartier de Darcht-e-Barchi).
De l'envisagement comme ouverture identitaire
Authors: Daubrée Noëlle , Clerc Paule
Published: February 2013

Résumé Sortir de l’Archaïque et des dangers de l’anéantissement en allant vers la lumière d’un visage bienveillant, entrer dans le visage de l’Autre, l’Envisager et en même temps découvrir sa propre identité, c’est le travail que nous avons souhaité exposer à partir de la prise en charge d’une fillette de six ans présentant des traits psychotiques.
Au bord du fleuve
Authors: Fiéloux Michèle
Published: February 2013

Résumé A travers le récit de la vie quotidienne d’une jeune femme Toucouleur vivant dans une région de forte émigration masculine dans la vallée du Sénégal et épouse d’un migrant de la caste des pêcheurs parti depuis un an travailler en France, on tente d’approcher et de découvrir comment peuvent être vécus et exprimés les sentiments amoureux par ces épouses de migrant contraintes, dans les années quatre vingt, à vivre cette situation pendant plusieurs années.
Estudio arqueológico en la Vía de los Vasos de Vicarello, A Gades Romam, entre las estaciones de Mariana y Mentesa (Puebla del Príncipe - Villanueva de la Fuente, Ciudad Real)
Authors: Benítez de Lugo Enrich Luis , Álvarez García Honorio Javier , Fernández Montoro José Luis , Mata Trujillo Enrique , Moraleda Sierra Jaime , Sánchez Sánchez Jesús , Rodríguez Morales Jesús
Published: February 2013

Este trabajo presenta información sobre una de las más antiguas e importantes vías de comunicación de la Península Ibérica. De la entidad y personalidad de esta vía dan cuenta los Vasos de Vicarello, que describen el itinerario A Gades Romam: “desde Cádiz a Roma”. El estudio aporta los resultados de una intervención arqueológica que, además de confirmar el carácter romano de este tramo, pone de manifiesto cómo la aplicación sistemática de un método de intervención arqueológica adecuado puede aportar unos resultados relevantes para avanzar en la caracterización y el reconocimiento de los caminos romanos, sin que por ello haya que provocar el desmantelamiento del monumento; en este caso, un camino cuyo origen se remonta a dos milenios.
Iconografía triunfal augustea y las guerras cántabras: algunas observaciones sobre escudos redondos y puntas de lanza representados en monumentos de la Península Ibérica e Italia
Authors: Polito Eugenio
Published: February 2013

Las armas representadas en bajorelieve fueron particularmente generalizadas en la época de Augusto, cuando los veteranos del príncipe tendido a enfatizar su importancia en la consolidación del imperio con la adopción de estos temas de guerra en sus tumbas. La comparación entre algunos relieves funerarios de Italia, los llamados guerreros lusitanos, y algunas de las emisiones monetarias de la Península Ibérica, junto con un reciente hallazgo desde el Foro de Augusto, permiten plantear la hipótesis de que la celebración de las victorias de Augusto en esta región podría tener significativamente contribuido al repertorio de las armas representadas que celebraban el nuevo Imperio.
Marcadores da paisagem e intervenção cadastral no território próximo da cidade de Bracara Augusta (Hispania Citerior Tarraconensis)
Authors: Carvalho Helena Paula
Published: February 2013

Este trabajo tiene como objetivo presentar algunos de los resultados del estudio sobre el poblamiento y la organizacion del paisaje rural en torno a la ciudad romana de Bracara Augusta. La existencia de un cadastro romano con una orientación dominante de 16º NNO y una modulación de 20x20 actus, se confirma gracias a la documentación de algunos elementos de delimitación, de los que podemos destacar dos cipos con una distancia entre sí de 20 actus.

[pt] Este artigo propõe-se apresentar os resultados do estudo do povoamento e da organização da paisagem em torno da cidade romana de Bracara Augusta. Este objectivo orienta-se, mais especificamente, para os dados relativos à identificação de um cadastro romano perfeitamente adaptado às formas estruturantes do relevo e da rede hidrográfica. Este cadastro possui uma orientação de cerca de 16º NNO com uma modulação de 20x20 actus, e encontra-se confirmado por alguns elementos demarcatórios, nomeadamente dois cipos que possuem entre si 20 actus de distância.
Un vaso de Terra Sigillata Hispánica Tardía con decoración singular procedente de la Villa romana de Saelices El Chico (Salamanca, España)
Authors: Dahi Elena Sarah , Martín Chamoso M.ª Concepción
Published: February 2013

Se presenta un vaso de terra sigillata hispánica tardía de la forma Drag. 37t procedente de la villa romana de Saelices el Chico (provincia de Salamanca). La pieza está fabricada a molde y destaca por tener una decoración de tipo animalístico esquemático. El contexto cerámico en el que apareció se data en una fecha no anterior al siglo VI d.C. Se trata probablemente de una de las últimas producciones de terra sigillata de la Península Ibérica.
Sobre los usos y la cronología de las pizarras numerales: Reflexiones a partir del caso del yacimiento de Valdelobos (Montijo, Badajoz)
Authors: Cordero Ruiz Tomás , Martín Viso Iñaki
Published: February 2013

En este trabajo pretendemos ofrecer algunas reflexiones sobre el uso, función y cronología de las llamadas pizarras numerales visigodas con el fin de ofrecer nuevas perspectivas de análisis que ayuden a su mejor comprensión. Para ello tomamos como referencia principal la pizarra hallada recientemente en el yacimiento de Valdelobos, inserto dentro del ager Emeritensis, pero sin descuidar su relación con los ejemplares documentados en el sector suroccidental de la cuenca del Duero y en la zona meridional del Sistema Central; región de donde procede la inmensa mayoría de las pizarras conocidas.
Un nuevo término augustal del ager Iuliobrigensium
Authors: Fernández Vega Pedro Ángel , Bolado del Castillo Rafael , Callejo Gómez Joaquín , Mantecón Callejo Lino
Published: February 2013

Se presenta un nuevo término augustal de la serie legio IIII Macedonica hallado en La Cuadra (Valdeolea, Cantabria), una pieza más que se suma a las 18 ya conocidas que delimitaban el ager Iuliobrigensium.
El Instituto Ibérico Oriental (1938-1941). Un intento de introducción de los estudios sobre el Oriente Antiguo en España
Authors: Garcia-Ventura Agnès , Vidal Jordi
Published: February 2013

El objetivo del presente artículo es el de reconstruir el proceso de creación del Instituto Ibérico Oriental en Barcelona tras la guerra civil española. En este sentido se analiza el fundamento teórico del proyecto, las personas involucradas en el mismo así como las posibles causas de su fracaso.
Influencias de la familia en el rendimiento académico. Un estudio en Canarias
Authors: Pérez Sánchez Carmen Nieves , Betancort Montesinos Moisés , Cabrera Rodríguez Leopoldo
Published: February 2013

En este artículo estudiamos los efectos de las variables relacionadas con la familia en el rendimiento académico en una muestra de estudiantes de Canarias. A través de una regresión logística evaluamos el peso de las siguientes variables en el rendimiento académico: el nivel educativo de los padres, las expectativas de los padres sobre el rendimiento académico de sus hijos, el estatus socioeconómico, el tamaño de la familia, tipo de familia y prácticas de control familiar sobre el trabajo escolar. Estas variables son incorporadas a dos modelos teóricos diferentes: el de Coleman y el de Bourdieu. Los resultados indican que las variables que tienen un papel destacado son: las expectativas, el nivel educativo, el estatus socioeconómico de los padres y el tamaño de la familia.
La movilidad transfronteriza de rumanos en España en tiempos de crisis
Authors: Marcu Silvia
Published: February 2013

El artículo analiza la movilidad de rumanos en España, en el contexto de la crisis económica que afecta a los mercados de trabajo de España y Rumanía. Tomando como referencia la percepción de los inmigrantes rumanos, el estudio aborda sus experiencias de movilidad como ciudadanos europeos en la Unión Europea (UE) ampliada, con derechos de libre circulación pero no de trabajo. Para realizar la investigación se utilizó la técnica cualitativa de la entrevista en profundidad, llevándose a cabo 80 entrevistas a rumanos que practican la movilidad laboral entre los dos países. El trabajo empírico sugiere que las percepciones de los migrantes sobre la movilidad se interpretan según las etapas migratorias y las circunstancias económicas actuales. En el ámbito teórico el artículo destaca la contribución de la movilidad al conocimiento sobre la inmigración, y sus conclusiones apuntan hacia la comprensión del proceso de movilidad en la UE ampliada.
Normativity, explanation, and social sciences. A symposium on Stephen Turner's Explaining the Normative
Authors: Gaitán-Torres Antonio
Published: February 2013

No disponible
Normativity without normativism
Authors: Zamora-Bonilla Jesús
Published: February 2013

No disponible
Normativity for social sciences. The expressivist's recipe
Authors: Gaitán-Torres Antonio
Published: February 2013

No disponible
The tacit and the explicit. A reply to José A. Noguera, Jesús Zamora- Bonilla, and Antonio Gaitán-Torres
Authors: Turner Stephen
Published: February 2013

No disponible
Retreading Tire Management with Business Intelligence
Authors: Collier Scott , Edberg Dana , Croasdell David
Published: February 2013

Justifying the development of a business intelligence system is challenging when the primary beneficiaries of the system are internal to the company responsible for that development; it is even harder to justify when the system is designed to produce a new service that is radically different than current in-house manufactured products. This case explores the possibility of a tire manufacturer developing a business intelligence system to help their customers manage very large heavy equipment tires within the mining industry. These tires are one of the biggest expenses for mining companies and this case discusses the opportunity to use business intelligence to manage that expense. This case encourages discussion of such topics as: the issues involved in system initiation from technology personnel, the need to incorporate both real-time and historical data in a system, the need for technology personnel to have deep knowledge of an application domain, and the challenges that arise from integrating data produced by disparate systems.
Modeling-Centered Data Warehousing Learning
Authors: Jukic Nenad , Jukic Boris
Published: February 2013

Though data warehousing is widely recognized in the industry as the principal decision support system architecture and an integral part of the corporate information system, the majority of academic institutions in the US and world-wide have been slow in developing curriculums that reflect this. The authors examine the issues that have contributed to the lag in the coverage of data warehousing topics at universities and introduce methods, concepts and resources that can enable business educators to deal with these issues and conduct comprehensive, detailed, and meaningful coverage of data warehouse related topics.