bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optische Volumenbestimmung für die Dosierung kleinster VoluminaOptical Measurement of Minimal Volumes in Dispensing
Authors: Krüger Thomas , Thurow Kerstin , Stoll Norbert 
Published: February 2009

Zusammenfassung
Die zunehmende Miniaturisierung im Bereich der Forschung in den Life Sciences benötigt Dosierverfahren, die in der Lage sind, immer kleinere Mengen hochgenau zu dosieren. U. a. findet hier die Piezotechnologie (adaptiert aus der Tintenstrahldrucktechnik) Anwendung, mit der sich gezielt einzelne Tröpfchen erzeugen lassen. Mit Hilfe eines Piezokristalls wird für wenige Mikrosekunden Druck auf eine mit Flüssigkeit gefüllte Glaskapillare ausgeübt. Durch diesen Druckimpuls wird ein Tropfen in der Größenordnung von 50–500pl aus einer Düse katapultiert. Die Eigenschaften der erzeugten Tropfen, u. a. deren Volumen, sind abhängig von der verwendeten Flüssigkeit sowie der Ansteuerung des Piezoelementes. Da die präzise Dosierung größerer Mengen auf dem Erzeugen einzelner Tropfen basiert, ist die Kenntnis des Tropfenvolumens von Interesse. Es wird hier eine Methode vorgestellt, die basierend auf Bilderfassung und Bildverarbeitung das Tropfenvolumen bestimmen kann. Der Fokus richtet sich dabei insbesondere auf die Anwendbarkeit dieses Verfahrens in Dosierrobotern in der Praxis.
Depensatory Mortality, Density‐Dependent Growth, and Delayed Compensation: Disentangling the Interplay of Mortality, Growth, and Density during Early Life Stages of Yellow Perch
Authors: Irwin Brian J. , Rudstam Lars G. , Jackson James R. , VanDeValk Anthony J. , Forney John L. , Fitzgerald Dean G. 
Published: February 2009

AbstractWe present long‐term (>40‐year) patterns in the density of age‐0 yellow perch Perca flavescens in Oneida Lake at four early life stages (at egg deposition, at the attainment of a total length of 18 mm, on 1 August, and on 15 October), from which we calculated mortality and growth rates during the three intervals between these early life stages. At each of these stages, age‐0 yellow perch densities have been lower in recent years than in the 1960s and 1970s. Mortality rates showed no time trend from egg to 18 mm (interval 1 [the larval stage]), increased from 18 mm to 1 August (interval 2 [the limnetic stage]), and decreased from 1 August to 15 October (interval 3 [the demersal stage]). We also tested previous hypotheses for density‐dependent effects on mortality and growth using the entire long‐term data set. Contrary to expectations from the 1960s, the mortality rates of age‐0 yellow perch in Oneida Lake are no longer depensatory. Overall, the growth rate of age‐0 yellow perch has increased over time and become density dependent. Also contrary to common expectations of size‐selective mortality, greater average total length is not associated with decreased instantaneous daily mortality for two early life stage intervals. The combined effect has been a decline in age‐0 yellow perch density and an increase in average total length by the end of their first year. Although increased growth has not sufficiently compensated for increased mortality during the first year of life, obtaining a larger end‐of‐year size should reduce subsequent mortality during the winter period, providing for a process of delayed compensation that helps stabilize density at age 1.
Working Memory and Writing in Bilingual Students
Authors: Adams Anne-Marie , Guillot Kim 
Published: February 2009

AbstractThe vocabulary, spelling and writing skills of French/English bilingual students aged between 12 and 15 years were assessed, along with their verbal working memory (VWM), visuo-spatial working memory (VSWM) and phonological short-term memory (PSTM) skills. The extent to which individual differences in writing performance reflected variations in working memory skills which were specific to the memory domain and the language of testing was assessed. All three components of working memory were significantly associated across languages confirming their independence in this bilingual sample. Significant associations were also identified between vocabulary knowledge and VWM in both languages. For text composition in English, significant associations were identified between spelling and PSTM assessed in English, with medium sized, but non-significant, correlations identified with vocabulary knowledge and VWM. For text composition in French, although the associations with spelling, PSTM and VWM were of a moderate effect size, none of these associations reached significance. Comparisons across languages revealed that although writing in English was not significantly associated with either French vocabulary or spelling, writing in French was associated with both these subcomponent skills assessed in English. Visuo-spatial working memory bore little association with either spelling or writing skills either within or across languages. Broadly speaking therefore the data were consistent with an interpretation of the relationship between working memory and writing that reflects a domain-specific view of the capacity limitations in working memory which constrain writing performance, rather than limitations imposed by a domain-general attentional construct. However, it was proposed that these verbal processing effects are not language-specific.
Plagiarism by Non-Native Speaker Student Writers
Authors: Lankamp Robert 
Published: February 2009

Abstract
Many studies have attributed plagiarism to the temptations of the Internet, teachers’ reluctance to enforce the rules, belonging to a culture where academic plagiarism is condoned, or non-native speakership. In this paper, it is first argued that none of these can be considered direct causes of plagiarism, and other studies are cited that support this position. It is further argued that non-native student plagiarism is caused by ignorance of the rules and/or authorial problems. Further support for this claim is provided by an empirical study involving inappropriate use of source texts by eight non-native speaker graduate students. This study confirms the findings in Pecorari (2003, 2006) where it is claimed that plagiarizing non-native speakers have personal, idiosyncratic views of plagiarism that demonstrate their ignorance of the generally accepted rules. This study also confirms the findings in Abasi et al. (2006) where it is claimed that authorial problems are a root cause of plagiarism by ESL students. Finally, it is investigated what the relationship is between ignorance of the rules of plagiarism and authorial problems.
Development of Fluency and Revision in L1 and L2 Writing in Swedish High School Years Eight and Nine
Authors: Lindgren Eva , Spelman Miller Kristyan , Sullivan Kirk P.H. 
Published: February 2009

AbstractIn this paper we use keystroke logging to examine the development of fluency and revision in high school L1 Swedish and L2 English writing. Each writer wrote one text in English and one in Swedish in each year of the study. Using a combination of statistical and automatic analyses of the keystroke log, we attempted to investigate: i) how the on-line writing process in terms of revising, pausing and fluency in first and second language writing changes over time, ii) whether there are on-line writing process variables which can be identified as contributing to text improvement, and iii) whether there are any aspects of L1 writing which can be identified as contributing to L2 writing and learning processes and which may form part of a teaching programme. Previous studies of L2 writers have attested to changes in fluency, pause and revision behaviour, and amount of text produced, although associations with the quality of the final output are not clearly supported. The within-writer comparison of this study addresses differences in fluency, pause and revision behaviour between L1 and L2 writing. A regression analysis looking at quality and two types of revision (Form, and Conceptual) found that form revision frequency was related to the language of writing and that conceptual revision frequency was dependent on linguistic experience rather than on language. The findings suggest that conceptual revision and writing skills are transferred from the L1 to the L2, and that these skills should be taught accordingly.
Strategic and Interactive Writing Instruction (SIWI)
Authors: Wolbers Kimberly A. 
Published: February 2009

AbstractThis study investigates the effects of using Strategic and Interactive Writing Instruction (SIWI) with deaf, middle school students who use American Sign Language as their L1 and written English as L2. Using a pretest-posttest control group design, the research explores whether students receiving SIWI made significantly greater gains compared to those not receiving SIWI on a number of variables. There were 33 total students, 16 in the treatment group and 17 in the comparison group. The intervention lasted a total of 8 weeks, during which time the treatment group collaboratively constructed two report papers using SIWI components, and the comparison group continued with their typical literacy instruction. The pre and posttest measures were scored, according to rubrics, for evidence of primary traits, contextual language, and conventions. The multivariate analysis of variance (MANOVA) and follow-up univariate analyses were statistically significant. Furthermore, effect sizes (d) were large to very large, ranging from 1.27 to 2.65, indicating SIWI to be an effective approach with deaf L2 writers.
Characteristics of Pseudomonas aeruginosa isolates from intensive care unit
Authors: Ozer Burcin , Tatman-Otkun Muserref , Memis Dilek , Otkun Metin 
Published: February 2009

Abstract
The study looked at the antimicrobial resistance patterns, serotypes, molecular types, metallo beta-lactamase, and chromosomal betalactamase enzymes of P. aeruginosa strains isolated from the patients and the staffs of the intensive care unit. P. aeruginosa isolates from the patients as nosocomial pathogens and from the staffs were evaluated for their susceptibilities to the antimicrobials by the disk diffusion and E-test methods. Metallo beta-lactamase enzymes were investigated by E-test, the inducibility of β - lactamase enzymes were detected by the disk antagonism test. Serotyping was performed by slide agglutination method. The P. aeruginosa isolates were typed by pulsed field gel electrophoresis. Twenty-five P. aeruginosa strains from the patients and three from the staffs were isolated. Fifteen P. aeruginosa, eleven of which composed of MDR bacteria, were found in serogroup E, 7 strains in G, 4 strains in B, and 1 strain in serogroup A. In all 12 bacteria in the MDR and serogroup E, metallo beta-lactamase enzyme was found to be positive. And in other 15 strains, except the bacterium which could not be serotyped, chromosomal beta-lactamase was found to be positive. The result of the molecular typing showed PFGE A pattern. In conclusion, a pattern in PFGE which included bacteria from MDR and serogroup E, G which was observed in the P. aeruginosa strains which was isolated from the staff’s hands and from the 5 patients, and PFGE F pattern were found to be observed the most. Finally, the two different clonal strains were found to be established in the intensive care.
Causes of death in HIV-infected patients in the region of Lodz, Poland from 1995 through 2005
Authors: Jabłonowska Elżbieta , Małolepsza Ewa 
Published: February 2009

Abstract
In 2005, 440 patients infected with HIV were registered in the AIDS center in Lodz, Poland. The aim of our study was to analyze the causes of death in 70 fatal cases. We analyzed the data from 70 fatal cases from 1995 through 2005. Of the fatal cases we investigated, 10 were in women and 60 in men. The most common route of HIV transmission was intravenous drug use (50%). At the time of death, the mean age of patients was 36,48 years, and the mean CD4 count was 115,14 cells per microliter. The mean time from HIV diagnosis to death was 3,75 years. The leading cause of death in the group from 1995 through 2004 was AIDS. In 2002, liver diseases resulting from hepatitis C virus (HCV) infection were the cause of death in two patients. In 2005, two patients died as a result of myocardial infarction. The prevalence of fatal cases decreased from 9,09 % in 1995 to 1,59 % in 2005. Hepatitis B surface antigen (HBsAg) was found in 4 of 62 patients (6,45%), anti-HCV in 28 patients (45,16%), and both hepatitis B virus (HBV) and HCV infection in 5 patients (8,07%). Coinfections occurred most frequently in intravenous drug users (IDUs). In conclusions: (1) AIDS is still the leading cause of death in HIV-positive patients in the Lodz region; (2) the emerging cause of death in HIV-positive patients is liver disease as the sequel of HBV and HCV coinfections; (3) heart disease is becoming an important cause of death in HIV-positive patients.
A case report of vancomycin-resistant Enterococcus faecalis colonization of a femoral wound in central europe
Authors: Dombrádi Zsuzsanna , Bodnár Ferenc , Orosi Piroska , Dombrádi Viktor , Szabó Judit 
Published: February 2009

Abstract
Wound infection and colonization following cardiac surgery is well known but rarely caused by vancomycin-resistant enterococci (VRE). A case of femoral wound colonization by vanA carrying Enterococcus faecalis in a patient following mitral prolapse surgery is described in this report.
Feasibility of early hospital discharge directly from coronary care unit after primary angioplasty for uncomplicated acute myocardial infarction
Authors: Pernat Andrej , Lainscak Mitja , Mohar Aleksandra , Noc Marko 
Published: February 2009

Abstract
Current European and American guidelines recommend early discharge for patients with uncomplicated acute myocardial infarction (AMI). However, this concept has not been widely accepted, and experience with direct discharge from the coronary care unit is limited. We aimed to investigate safety and cost effectiveness of early discharge directly from coronary care unit following successful percutaneous coronary angioplasty (PTCA) in patients with uncomplicated AMI. We included consecutive thirty-one patients with uncomplicated AMI and successful PTCA admitted to coronary care unit of a university hospital. Uncomplicated course was defined as absence of reinfarction, ischemia, VF/VT, repeated PTCA, and heart failure within first 72 hours. Incidence of death, reinfarction, VF/VT, need for revascularisation, and hospitalisation due to heart failure at 1, 6, and 12 months was compared with 56 randomly selected AMI patients with successful PTCA but longer hospitalisation. Average hospital stay was 4 days in early and 6.7 days in control group (p<0.05). Control group had more extensive coronary disease (54% two or more vessels vs. 28% in early discharge, p<0,05). During follow up, none of the early discharged patients died, the only observed event was repeat PTCA due to angina pectoris. In the control group, mortality at 12 months was 3.5% (p<0.05). Cumulative 12 month event free survival was 96% in early discharge group and 87% in control group, but difference was not significant (p=0.15, Cox-Mantel test). Cost reduction of early discharge amounted to 1100 Euro per patient. In conclusions, our study confirmed that for a selected population of patients with AMI, successful PTCA, and uncomplicated clinical course during first 72 hours, discharge as early as three days following the admission is safe.
Benefit of antibiotic therapy on pouchitis after ileal pouch anal anastomosis: A systematic review and meta-analysis of clinical trials
Authors: Elahi Behzad , Nikfar Shekoufeh , Derakhshani Saeed , Vafaie Mohammad , Abdollahi Mohammad 
Published: February 2009

Abstract
The aim of the study was to evaluate and collect current evidence on the effect of antibiotics in pretreatment of pouchitis after restorative ileal pouch anal anastomosis (IPAA). Pubmed, Embase, Web of Science, Scopus, and Cochrane Library databases were searched between 1966 and July 2008; and relevant clinical trials extracted, reviewed, and validated according to the study protocol. The outcome of interest was clinical improvement after treatment. Nine randomized, placebo-controlled clinical trials were found relevant and studied but 3 of them with 70 patients were entered into meta-analysis. Pooling of the results from these trials yielded an odds ratio of 15.96 with a 95% CI of 4.20–60.70, indicating a significant OR (p<0.0001) in treatment group in comparison to the placebo group. In conclusion, the meta-analysis confirms benefit of antibiotics in management of pouchitis after IPAA operation.
An evaluation of a new approach to the regeneration of Helichrysum italicum (Roth) G. Don, and the molecular characterization of the variation among sets of differently derived regenerants
Authors: Perrini Rosaria , Alba Vittorio , Ruta Claudia , Morone-Fortunato Irene , Blanco Antonio , Montemurro Cinzia 
Published: February 2009

AbstractA protocol for the induction of regeneration from leaves of Helichrysum italicum was established. Calli were found to form on the basal medium only when it was supplemented with thidiazuron (TDZ) alone or in combination with naphthalene acetic acid (NAA), with a percentage ranking of at least 80%. The hormone-free medium showed the highest percentage of shoot regeneration (62%) even though no callus formed. AFLP markers were employed to verify tissue culture-induced variation in the regenerated plantlets obtained by direct shoot regeneration or the indirect shoot regeneration process (callus formation). Seven out of the eleven AFLP primer pairs yielded polymorphic patterns. The average number of fragments per primer pair was 64.1. Singletons were represented by 12 (2.7%) fragments. Student’s T-test was performed both on the average number of shared fragments and on the nucleotide diversity, and no significant statistical difference was observed between the two regeneration treatments.
Emerging extra-intestinal infections with Aeromonas hydrophila in coastal region of southern Karnataka
Authors: Mukhopadhyay C , Chawla K , Sharma Y , Bairy I 
Published: February 2009

Background:

Aeromonas species are gram-negative rods usually isolated from the gastrointestinal tract. They have been occasionally reported as a cause of extra-intestinal infections such as cellulitis, cholangitis, necrotizing fascitis, meningitis, bacteremia, or peritonitis in both immunocompetent and immunocompromised patients. Aim: To determine the role and possible pathogenesis of Aeromonas in extra-intestinal infections.Settings and Design: Retrospective analysis carried out at Kasturba Hospital Manipal, Karnataka in the months of January and February 2007.

Materials and Methods:
Clinical manifestations and management of eight cases of extra-intestinal infections caused by A. hydrophila, from the south Karnataka coastal region were reviewed. The isolates were identified with the help of biochemical tests using standard guidelines.Results: All patients acquiredAeromonas infections in the community. Five (62.5%) had underlying illnesses, such as liver disease, diabetes mellitus or malignancy. Five (62.5%) had polymicrobial infections, and three (37.5%) were complicated with bacteremia. These included three patients with ulcers or abscess over the lower leg, two with cellulitis due to snake bite and one each with pelvic inflammatory disease, spontaneous bacterial peritonitis and pneumonia. A. hydrophila was found to be a causative agent of pelvic inflammatory disease or cellulitis following sea snake bite, and such a clinical scenario has not been previously described. Seven patients survived the illness.

Conclusions:
Isolation of A. hydrophila from extra-intestinal specimens demands utmost clinical and microbiological vigilance in diagnosis, since the organism can cause serious infections among immunocompromised as well as immunocompetent individuals.
Mott–Schottky Barrier Enabling High‐Performance Hydrazine‐Assisted Hydrogen Generation at Ampere‐Level Current Densities
Authors: Huang Yaping , Zhang Xia , Li Linfeng , Humayun Muhammad , Zhang Huaming , Xu Xuefei , Anthony Savarimuthu Philip , Chen Zhenhua , Zeng Jianrong , Shtansky Dmitry V. , Huo Kaifu , Song Haisheng , Wang Chundong , Zhang Wenjun 
Published: April 2024

AbstractLocal electron density manipulation can optimize the adsorption and desorption nature of catalysts leading to enhanced catalytic activity for water oxidation. Construction a Mott–Schottky barrier allows the electron transition in catalysts because of their different Fermi levels. Herein, a Pt@NiFc‐MOF Mott–Schottky heterojunction is constructed, in which electrons are transferred from NiFc‐MOF to Pt as triggered by the formed built‐in electric field at the interface. The as‐prepared Pt@NiFc‐MOF reveals exceptional performance toward the hydrazine oxidation reaction (HzOR), hydrogen evolution reaction (HER), and overall hydrazine splitting (OHzS) at ampere‐level current densities. The advanced nature of the configured Mott–Schottky heterojunction can also be further evidenced from a concept direct liquid N2H4/H2O2 fuel cell (Pt@NiFc‐MOF//Pt Net), yielding a maximum power density of 415.2 mW cm‒2 at 80°C and can work stably for 190 h at 500 mA cm‒2 (at 25°C). One more function of Pt@NiFc‐MOF is clarified as well, that is it can purify hydrazine‐rich wastewater from 718 to 6 ppb (less than the U.S. Environmental Protection Agency of 10 ppb) in 120 min at 500 mA cm‒2. This work represents a breakthrough in interface engineering of metal–organic frameworks (MOFs) toward industry‐level hydrogen generation and its beyond.
MicroRNA‐Modified DNA Hexahedron‐Induced Hepatocyte‐Like Cells Integrating 3D Printed Scaffold for Acute Liver Failure Therapy
Authors: Xue Tiantian , Wei Hongyan , Li Fenfang , Zhang Yixin , Jin Yuanyuan , Xu Yanteng , Chan Hon Fai , Xu Yingying , Li Yin‐Xiong , Li Mingqiang , Tao Yu 
Published: April 2024

AbstractAcute liver failure (ALF) involves extensive necrosis of liver cells and severe impairment of liver function. Hepatocyte transplantation holds promise for treating ALF by swiftly supporting liver functions and promoting liver regeneration. However, the scarcity of suitable cell sources requires strategies to obtain enough functional hepatocyte‐like cells (HLCs) and optimize their in vivo transplantation efficiency. A DNA hexahedral nanostructure (DHN) is developed loaded with microRNA‐122 to efficiently induce hepatic differentiation of human adipose‐derived mesenchymal stem cells into HLCs. These HLCs can serve as alternative hepatocyte sources, as confirmed by expression of liver‐specific genes and proteins, and the restoration of liver functions. To enhance in vivo survival efficiency of HLCs, a versatile scaffold is also created by 3D printing the calcium‐cross‐linked mixture bioink composed of sodium alginate, gelatin, and silk fibroin with excellent ROS scavenging capabilities. The scaffold is infused with chitosan‐DHN hydrogel containing HLCs for tissue engineering orthotopic transplantation in CCl4‐induced ALF mice. The transplanted composite scaffold‐HLCs successfully repair tissue necrosis in the liver injury area of mice and regulate expressions of genes and proteins associated with inflammation, oxidative stress, and hepatocyte function. Collectively, this study offers a novel approach and strategy for identifying alternative hepatocyte sources and treating ALF.