bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of Perfusion Modes on Vital Organ Recovery and Thyroid Hormone Homeostasis in Pediatric Patients Undergoing Cardiopulmonary Bypass
Authors: Akçevin Atif , Alkan‐Bozkaya Tijen , Qiu Feng , Ündar Akif 
Published: November 2010

AbstractThe objectives of this study were: (i) to evaluate the effects of perfusion modes (pulsatile vs. nonpulsatile) on vital organs recovery and (ii) to investigate the influences of two different perfusion modes on the homeostasis of thyroid hormones in pediatric patients undergoing cardiopulmonary bypass (CPB) procedures. Two hundred and eighty‐nine consecutive pediatric patients undergoing open heart surgery for repair of congenital heart disease were prospectively entered into the study and were randomly assigned to two groups: the pulsatile perfusion group (Group P, n = 208) and the nonpulsatile perfusion group (Group NP, n = 81). All patients received identical surgical, perfusional, and postoperative care. Study parameters included total drainage, mean urine output in the intensive care unit (ICU), intubation time, duration of ICU and hospital stay, the need for inotropic support, pre‐ and postoperative enzyme levels (ALT [alanine aminotransaminase] and AST [aspartate aminotransaminase]), c‐reactive protein, lactate, albumin, blood count (leukocytes, hematocrit, platelets), creatinine levels, and thyroid hormones (thyroid stimulating hormone [TSH], FT3[free triiodothyronine], FT4[free thyroxine]). All patients survived the perioperative and postoperative periods. There were no statistically significant differences in either preoperative or operative parameters between the two groups. Group P, compared to Group NP, required significantly less inotropic support, had a shorter intubation period, higher urine output in ICU, and shorter duration of ICU and hospital stay. Lower lactate levels and higher albumin levels were observed in Group P and there were no significant differences in creatinine, enzyme levels, blood counts, or drainage amounts between two groups. TSH, Total T3, Total T4, and FT3, FT4 levels were markedly reduced versus their preoperative values in both groups. FT3 and FT4 levels were reduced significantly further in the nonpulsatile group both during CPB and at 72 h postoperation. The results of this study confirm our opinion that pulsatile perfusion leads to better vital organ recovery and clinical outcomes in the early postoperative period as compared to nonpulsatile perfusion in pediatric patients undergoing CPB cardiac surgery. The plasma concentrations of thyroid hormones are dramatically reduced during and after CPB, but pulsatile perfusion seems to have a protective effect of thyroid hormone homeostasis compared to nonpulsatile perfusion.
Cardiac Surgery of Premature and Low Birthweight Newborns: Is a Change of Fate Possible?
Authors: Alkan‐Bozkaya Tijen , Türkoğlu Halil , Akçevin Atif , Paker Tufan , Özkan‐Çerçi Hilda , Dindar Aygün , Ersoy Cihangir , Bayer Vedat , Aşkın Demet , Ündar Akif 
Published: November 2010

AbstractLow birthweight (LBW) continues to be a high‐risk factor in surgery for congenital heart disease. This risk is particularly very high in very low birthweight infants under 1500 g and extremely LBW infants under 1000 g. From January 2005 to December 2008, 33 consecutive LBW neonates underwent cardiac surgery in our clinic in keeping with the criteria for choice of surgery. Their weight range was between 800 and 1900 g. Nine of them were under 1000 g. Cardiopulmonary bypass (CPB) was used in 17 patients (39.5%) and pulsatile perfusion mode was applied to patients in the CPB group. The same surgical team operated to achieve palliation (8 patients, 24.2%) or full repair (25 patients, 75.8%). Median gestational age was 36 weeks with 12 (36.4%) premature babies (≤37 weeks). Median age at operation was 5 days. Pathologies were single ventricle (n = 3), pulmonary atresia–ventricular septal defect (n = 3), aortic coarctation (n = 10), aorticopulmonary window and interrupted aortic arch combination (n = 6), patent arterial duct (n = 11), critical aortic stenosis (n = 8), and tetralogy of Fallot with pulmonary atresia (n = 2). One infant had VATER syndrome. Selective cerebral perfusion technique was used in complex arch pathologies for cerebral protection. Median follow‐up was 14 months. There were four early postoperative deaths. None of the cases showed a need for early reoperation. The acceptable early‐ and midterm mortality rates in this group suggest that these operations can be successfully performed. There is a need for further multicenter studies to evaluate these high‐risk groups.
Media Effects on Group Collaboration: An Empirical Examination in an Ethical Decision‐Making Context
Authors: Sarker Saonee , Sarker Suprateek , Chatterjee Sutirtha , Valacich Joseph S. 
Published: November 2010

ABSTRACTEven though it is widely acknowledged that collaboration underlies much of the decision‐making efforts in contemporary organizations, and that organizational groups are increasingly making decisions that have ethical implications, few studies have examined group ethical decision‐making processes and outcomes. In addition, while there is increasing evidence that groups often collaborate/communicate using different mediating technologies, few studies have examined the effect of the characteristics of the media in group ethical decision‐making contexts. Finally, there is a clear paucity of studies that have investigated group decision making pertaining to information technology (IT)‐related ethical dilemmas, an area of rising importance for information systems (IS) and decision science researchers. This article seeks to address the gaps described above through an experimental study where groups collaborating either in a face‐to‐face context or in a computer‐mediated context (using NetMeeting or Wiki) were required to make a decision with respect to a scenario with an IT‐related ethical dilemma. Results indicate that media characteristics (e.g., anonymity, immediacy of feedback, parallelism) do not have an effect on whether groups make ethical (or unethical) decisions. However, several media characteristics were found to play a significant role on downstream variables, such as the quality of a follow‐up task (i.e., creation of a decision justification document), and overall process satisfaction of the group members.
Team Decision Making in Computer‐Supported Cooperative Work: How Initial Computer‐Mediated or Face‐to‐Face Meetings Set the Stage for Later Outcomes*
Authors: Kennedy Deanna M. , Vozdolska Ralitza R. , McComb Sara A. 
Published: November 2010

ABSTRACTThe success of teams working together over multiple meetings may depend on how processes develop at initial meetings. Computer‐mediated tools, in particular, may hinder team process development which may set the stage for shortcomings later. One recommendation is to hold the initial team meeting face to face. Herein, we examine social processes over time and whether computer‐mediated teams completing their first session face to face can offset the shortcomings in process development and outcomes in their second session. Using longitudinal data we test the differences in, and relationships among, processes and outputs across teams that met twice as computer mediated, twice as face to face, or as mixed media (first as face to face and second as computer mediated). Results indicate computer‐mediated teams reported lower participative decision making than face‐to‐face teams after the first session and the disparity continued at the second session. Mixed‐media teams, however, had improved participative decision making over pure computer‐mediated teams in the long run. Further, mixed‐media teams reported team satisfaction similar to pure face‐to‐face teams and delivered a task performance between that of pure computer‐mediated and pure face‐to‐face teams. Interestingly, mixed‐media teams experienced increased conflict over time, while conflict in pure media teams decreased. Our results suggest that practitioners may want to require an initial face‐to‐face session (i.e., more than just a meet and greet) to prepare members to work together in the future.
Operational Capabilities: The Secret Ingredient
Authors: Wu Sarah Jinhui , Melnyk Steven A. , Flynn Barbara B. 
Published: November 2010

ABSTRACTWe develop a theoretical definition of operational capabilities, based on the strategic management and operations management literature, and differentiate this construct from the related constructs of resources and operational practices, drawing upon the resource‐based view of the firm as our foundation. We illustrate the key features of operational capabilities using the illustration of a restaurant kitchen. Because the traits of operational capabilities are distinct, they create a barrier to imitation, making them a potential source of competitive advantage. However, operational capabilities are particularly challenging to measure, because they emerge gradually and are tacit, embedded, and manifested differently across firms. In solving this measurement conundrum, we draw upon similar situations experienced by Schein (2004) and Eisenhardt and Martin (2000) in operationalizing organizational culture and dynamic capabilities. A taxonomy of six emergent operational capabilities is developed: operational improvement, operational innovation, operational customization, operational cooperation, operational responsiveness, and operational reconfiguration. A set of measurement scales is developed, in order to measure each of the operational capabilities, and validated using two different datasets. This allows replication of the psychometric properties of the multi‐item scales and helps to ensure the validity of the resulting measures.
High‐dose cefazolin on consecutive hemodialysis in anuric patients with Staphylococcal bacteremia
Authors: RENAUD Claude J. , LIN Xuling , SUBRAMANIAN Srinivas , FISHER Dale A. 
Published: November 2010

AbstractMethicillin‐sensitive Staphylococcus aureus (MSSA) bacteremia is a leading cause of infection in hemodialysis (HD) patients. Cloxacillin, cefazolin, and vancomycin are the mainstay antimicrobials. Cloxacillin administration leads to frequent drug dosing, longer length of stay (LOS), and higher cost, while resistance and poorer outcomes are associated with vancomycin use. Dosing cefazolin during HD allows for prolonged blood therapeutic levels. We assessed the outcomes and safety of a strategy of treating MSSA bacteremia with 2–3 g cefazolin on HD only. All HD patients with MSSA bacteremia admitted in June–December 2009 at our center and receiving this regime were compared with historical controls who received cloxacillin. Demographic characteristics and outcome measures like mortality, LOS, cost, recrudescence, and adverse drug reactions were assessed. Of 27 consecutive episodes reviewed, 14 and 13 patients received cefazolin and cloxacillin, respectively. Baseline demographics were comparable between the 2 treatment groups. More than one‐third of the bacteremia was related to tunneled catheter infection. The 30‐day mortality of cloxacillin‐ and cefazolin‐treated patients was 15% and 7%, respectively (P=0.14). Two of the 11 survivors treated with cloxacillin (18%) had recrudescent bacteremia while none was observed in cefazolin‐treated survivors. Cefazolin was associated with shorter LOS (10 vs. 20 days, P<0.05) and lower cost (US$8262.00 vs. US$15,367.00, P<0.05). Cefazolin use resulted in 3 idiosyncratic adverse drug reactions. Cefazolin dosed on each HD in MSSA bacteremia leads to earlier discharge and less cost. Larger prospective studies are, however, warranted to fully assess its safety and efficacy.
Growth rates of rainbow smelt in Lake Champlain: effects of density and diet
Authors: Stritzel Thomson Jennifer L. , Parrish Donna L. , Parker‐Stetter Sandra L. , Rudstam Lars G. , Sullivan Patrick J. 
Published: November 2010

Stritzel Thomson JL, Parrish DL, Parker‐Stetter SL, Rudstam LG, Sullivan PJ. Growth rates of rainbow smelt in Lake Champlain: effects of density and diet. Ecology of Freshwater Fish 2010. © 2010 John Wiley & Sons A/SAbstract –  We estimated the densities of rainbow smelt (Osmerus mordax) using hydroacoustics and obtained specimens for diet analysis and groundtruthed acoustics data from mid‐water trawl sampling in four areas of Lake Champlain, USA–Canada. Densities of rainbow smelt cohorts alternated during the 2‐year study; age‐0 rainbow smelt were very abundant in 2001 (up to 6 fish per m2) and age‐1 and older were abundant (up to 1.2 fish per m2) in 2002. Growth rates and densities varied among areas and years. We used model selection on eight area–year‐specific variables to investigate biologically plausible predictors of rainbow smelt growth rates. The best supported model of growth rates of age‐0 smelt indicated a negative relationship with age‐0 density, likely associated with intraspecific competition for zooplankton. The next best‐fit model had age‐1 density as a predictor of age‐0 growth. The best supported models (N = 4) of growth rates of age‐1 fish indicated a positive relationship with availability of age‐0 smelt and resulting levels of cannibalism. Other plausible models were contained variants of these parameters. Cannibalistic rainbow smelt consumed younger conspecifics that were up to 53% of their length. Prediction of population dynamics for rainbow smelt requires an understanding of the relationship between density and growth as age‐0 fish outgrow their main predators (adult smelt) by autumn in years with fast growth rates, but not in years with slow growth rates.
Ultrasonography, lateral cephalometry and 3D imaging of the human masseter muscle
Authors: Naser‐ud‐Din S , Thoirs K , Sampson WJ 
Published: November 2010

To cite this article:
Naser‐ud‐Din S, Thoirs K, Sampson WJ: Ultrasonography, lateral cephalometry and 3D imaging of the human masseter muscle Orthod Craniofac Res 2011;14:33–43Structured AbstractAuthors –  Naser‐ud‐Din S, Thoirs K, Sampson WJPurpose –  To develop prediction equations to assist the clinician to derive cephalometric norms from the non‐invasive investigations of ultrasonography (US) and 3D imaging.Setting and Sample Population –  Adult volunteers from University of Adelaide participated in the study.Methods –  Eleven volunteers (eight women, three men; age range 22–30 years) were recruited for US and standard lateral radiographs measurements along with 3D facial imaging using a structured light technique. The three examinations were performed to assess the vertical and transverse dimensions of the face along with superficial masseter muscle dimensions. In total, 31 variables were statistically analysed for relationship among the three imaging modalities.Results –  Pearson’s correlation coefficients showed highly significant correlations between lateral cephalometric (Co–Go to R3–R4) and US (volume – thickness) variables (r = 0.92, p < 0.0001; r = 0.95, p < 0.0001, respectively). Strong correlations were also observed with Co–Go and masseter muscle area derived from US r = 0.81 (p = 0.01). Similarly, strong correlations were seen between gonion–menton (Go–me) and facial width from 3D imaging (r = 0.83, p = 0.003). A high statistical significance (p > 0.0001) for curvilinear measurements compared with linear counterparts was revealed with the paired t‐test. Factor analyses provided meaningful interrelationships for predictive equations generated for lateral cephalometric variables from 3D image coordinates.Conclusions –  This preliminary investigation suggests that useful clinical information for treatment planning and follow‐up can be gathered without repeated exposure to ionizing radiation. For more robust predictive equations, a larger sample would be required to validate such a model.
Avoiding hyperoxemia during neonatal resuscitation: time to response of different SpO2 monitors
Authors: Baquero Hernando , Alviz Ramiro , Castillo Armando , Neira Fredy , Sola Augusto 
Published: November 2010

AbstractAim:  To assess the time to obtain reliable oxygen saturation readings by different pulse oximeters during neonatal resuscitation in the delivery room or NICU.Methods:  Prospective study comparing three different pulse oximeters: Masimo Radical‐7 compared simultaneously with Ohmeda Biox 3700 or with Nellcor N395, in newborn infants who required resuscitation. Members of the research team placed the sensors for each of the pulse oximeters being compared simultaneously, one sensor on each foot of the same baby. Care provided routinely, without interference by the research team. The time elapsed until a reliable SpO2 was obtained was recorded using a digital chronometer. Statistical comparisons included chi‐square and student’s T‐test.Results:  Thirty‐two infants were enrolled; median gestational age 32 weeks. Seventeen paired measurements were made with the Radical‐7 and Biox 3700; mean time to a stable reading was 20.2 ± 7 sec for the Radical‐7 and 74.2 ± 12 sec for the Biox 3700 (p = 0.02). The Radical‐7 and the N‐ 395 were paired on 15 infants; the times to obtain a stable reading were 20.9 ± 4 sec and 67.3 ± 12 sec, respectively (p = 0.03).Conclusion:  The time to a reliable reading obtained simultaneously in neonatal critical situations differs by the type of the pulse oximeter used, being significantly faster with Masimo Signal Extraction Technology. This may permit for better adjustments of inspired oxygen, aiding in the prevention of damage caused by unnecessary exposure to high or low oxygen.
Strong [O iii] and [N ii] emission lines in globular clusters from photoionized R Corona Borealis star winds
Authors: Maccarone Thomas J. , Warner Brian 
Published: November 2010

Abstract
The globular cluster X-ray source CXO J033831.8–352604 in NGC 1399 has recently been found to show strong emission lines of [O iii] and [N ii] in its optical spectrum in addition to ultraluminous X-ray emission with a soft X-ray spectrum. It was further suggested that this system contained an intermediate-mass black hole which had tidally disrupted a white dwarf, producing the strong emission lines without detectable hydrogen emission. We show that an alternative exists which can explain the data more naturally in which the oxygen- and nitrogen-rich material is ejected from an R Corona Borealis (RCB) star. The scenario we propose here does not require an intermediate-mass black hole as the accretor, but also does not exclude the possibility.
EXPLORING AND EXPLAINING CREAMINESS PERCEPTION: CONSUMERS' UNDERLYING CONCEPTS
Authors: ANTMANN GABRIELA , ARES GASTÓN , SALVADOR ANA , VARELA PAULA , FISZMAN SUSANA M. 
Published: November 2010

ABSTRACTConsidering the importance of creaminess in consumers' overall liking of many food products, it is crucial to understand how consumers perceive creaminess and what they expect when a product is described as creamy. In this context, the objective of the present study was to gather information on how consumers in Spain and Uruguay, two Spanish‐speaking countries, understand creaminess and to identify what characteristics they associate with a creamy product. A word association task was performed with 107 and 120 participants in Valencia (Spain) and Montevideo (Uruguay), respectively. Participants were asked to write down the first four words, descriptions, associations, thoughts or feelings that came to their minds when thinking of creaminess. Consumers' elicited terms were grouped into seven dimensions. Creaminess associations were mainly related to creamy food products, texture, flavor and appearance attributes. Consumers mainly associated creaminess with smoothness, softness, sweetness and pleasantness. Differences were found between results from Spanish and Uruguayan consumers, which indicate that, even within the same language, cultural differences in consumers' understanding of the term creaminess exist.PRACTICAL APPLICATIONSResults of the present work contribute to knowledge of consumers' perceptions and expectations regarding creaminess, which could help to better understand and predict the likelihood of success or failure of different creamy products. A better understanding of creaminess can be useful for product development, ensuring that areas relevant for consumers are targeted and identifying the cues that they associate with a better liking of creamy products. Also, the vocabulary elicited could be used to improve the design of expert panel trainings, with the use of more consumer‐relevant terms.
EFFECTS OF HYDROXYPROPYL CELLULOSE ON THE QUALITY OF WHEAT FLOUR SPAGHETTI
Authors: MAJZOOBI MAHSA , OSTOVAN RAHELEH , FARAHNAKY ASGAR 
Published: November 2010

ABSTRACTThe effects of hydroxypropyl cellulose (HPC) on the quality of the ordinary wheat flour dough and spaghetti were studied. The determination of the rheological properties of the dough showed that the peak consistency, stability time, band width (determined by a farinograph), maximum force and elasticity (determined by a texture analyzer) of the HPC sample were higher while its viscosity was lower than those of the control. Scanning electromicrographs of the samples indicated that the HPC made a network on the surface of the starch granules. Based on the results, the HPC sample had higher water absorption, longer cooking time and less cooking loss than the control. Cooked HPC sample had higher cohesiveness and breaking point strength, while it had lower adhesiveness and stringiness than the control (determined by a texture profile analyzer). It also had better organoleptic and higher general acceptability than the control.PRACTICAL APPLICATIONSIn some areas where semolina is not available for pasta production, ordinary wheat flour is one the choices. In this case, obtaining the appropriate pasta quality is a matter of concern. The results of this study can be useful for the pasta industry to produce pasta of improved quality from nonsemolina flours such as ordinary wheat or other cereal flours.
CONSUMERS' CREAMINESS CONCEPT PERCEPTION: A CROSS‐CULTURAL STUDY IN THREE SPANISH‐SPEAKING COUNTRIES
Authors: ANTMANN GABRIELA , ARES GASTÓN , VARELA PAULA , SALVADOR ANA , COSTE BEATRIZ , FISZMAN SUSANA M. 
Published: November 2010

ABSTRACTCreaminess is a complex sensory attribute that is critical for consumer liking in a wide range of products. For this reason, it is crucial to understand consumers' expectations when trying a creamy product. The aim of the present work was to study consumers' creaminess perception in three different Spanish‐speaking countries.Between 107 and 120 consumers were recruited from Argentina, Spain and Uruguay. Participants were asked to provide a definition of creaminess and to list all the creamy products they knew and all the sensations they perceived when consuming a creamy product.Results from the present work suggest that consumers' perception of creaminess seems to be mainly related to tactile and kinesthetic sensations such as smoothness, viscosity, melting and softness. Differences were found between the outcomes from consumers in the three countries, which indicate that even within the same language, cultural differences exist in consumers' understanding of the term “creaminess.”PRACTICAL APPLICATIONSResults from the present work could contribute to a greater knowledge of consumers' creaminess perception and particularly about the textural attributes and sensations that consumers expect to find when they try creamy products. Understanding what consumers expect from a creamy product and what expectations are raised when thinking of creaminess, could assure that consumers' expectations are fulfilled, increasing the success of new products, including salty food items as soups or vegetable purees. Moreover, results could also be useful when selecting key instrumental or sensory measurements to predict consumers' perceived creaminess.