bluuebunny/crossref_metadata_2025 huggingface dataset:
Treatment Outcome in Patients With Peri‐Implantitis in a Periodontal Clinic: A Retrospective Study
Authors: Lagervall Maria , Jansson Leif E.
Published: December 2012

Background: The number of placed implants has grown during the past decade, and the prevalence of peri‐implantitis has increased. The purpose of the present study is to investigate the treatment outcome of peri‐implantitis and to identify factors influencing the treatment success rate.

Methods: The study was conducted as a retrospective longitudinal study on a referral population. The material included 382 implants with peri‐implantitis in 150 patients. Peri‐implantitis was defined as presence of pocket depths ≥5 mm, bleeding at probing and/or suppuration, and the presence of implant radiographic bone loss ≥3 mm or bone loss comprising at least three threads of the implant. Variance analyses, χ2 analyses, and logistic regression analysis were used for data analyses.

Results: The mean age of the participants at baseline was found to be 64 years (range: 22 to 87 years). The mean ± SD follow‐up time was 26 ± 20 months, and the mean time between implant installation and baseline was 6.4 years (range: 1 to 20 years). Periodontal flap surgery with osteoplasty was the most common type of therapy (47%), and regenerative surgery procedures with bone substitute materials were chosen in 20% of the cases. The mean success rate at patient level was 69%. The results of the logistic regression analyses showed that the success rate was significantly lower for individuals with the diagnosis of severe periodontitis, severe marginal bone loss around the implants, poor oral hygiene, and low compliance.

Conclusion: The effectiveness of the peri‐implantitis therapy was impaired by severe periodontitis, severe marginal bone loss around the implants, poor oral hygiene, and low compliance.
Effectiveness of Border Screening for Detecting Influenza in Arriving Airline Travelers
Authors: Priest Patricia C. , Jennings Lance C. , Duncan Alasdair R. , Brunton Cheryl R. , Baker Michael G.
Published: December 2012

Objectives. We measured symptom and influenza prevalence, and the effectiveness of symptom and temperature screening for identifying influenza, in arriving international airline travelers.

Methods. This cross-sectional study collected data from travelers to Christchurch International Airport, New Zealand, in winter 2008, via a health questionnaire, temperature testing, and respiratory sampling.

Results. Forms were returned by 15 976 (68%) travelers. Of these, 17% reported at least 1 influenza symptom, with runny or blocked nose (10%) and cough (8%) most common. Respiratory specimens were obtained from 3769 travelers. Estimated prevalence of influenza was 1.1% (4% among symptomatic, 0.2% among asymptomatic). The sensitivity of screening criteria ranged from 84% for “any symptom” to 3% for a fever of 37.8 °C or greater. The positive predictive value was low for all criteria.

Conclusions. Border screening using self-reported symptoms and temperature testing has limitations for preventing pandemic influenza from entering a country. Using “any symptom” or cough would lead to many uninfected people being investigated, yet some infected people would remain undetected. If more specific criteria such as fever were used, most infected people would enter the country despite screening.
Age Distribution of Infection and Hospitalization Among Canadian First Nations Populations During the 2009 H1N1 Pandemic
Authors: Mostaço-Guidolin Luiz C. , Towers Sherry M. J. , Buckeridge David L. , Moghadas Seyed M.
Published: December 2012

Objectives. We estimated age-standardized ratios of infection and hospitalization among Canadian First Nations (FN) populations and compared their distributions with those estimated for non-FN populations in Manitoba, Canada.

Methods. For the spring and fall 2009 waves of the H1N1 pandemic, we obtained daily numbers of laboratory-confirmed and hospitalized cases of H1N1 infection, stratified by 5-year age groups and FN status. We calculated age-standardized ratios with confidence intervals for each wave and compared ratios between age groups in each ethnic group and between the 2 waves for FN and non-FN populations.

Results. Incidence and hospitalization ratios in all FN age groups during the first wave were significantly higher than those in non-FN age groups (P < .001). The highest ratios were observed in FN young children aged 0 to 4 years. During the second wave, these ratios tended to decrease in FN populations and increase in non-FN populations, especially among groups younger than 30 years.

Conclusions. Incidence and hospitalization ratios in FN populations were higher than or equivalent to ratios in non-FN populations. Our findings support the need to develop targeted prevention and control strategies specifically for vulnerable FN and remote communities.
Effects of Smoke-Free Laws on Alcohol-Related Car Crashes in California and New York: Time Series Analyses From 1982 to 2008
Authors: Bernat Debra H. , Maldonado-Molina Mildred , Hyland Andrew , Wagenaar Alexander C.
Published: December 2012

We examined effects of New York and California’s statewide smoke-free restaurant and bar polices on alcohol-related car crash fatalities. We used an interrupted time-series design from 1982 to 2008, with 312 monthly observations, to examine the effect of each state’s law on single-vehicle-nighttime crashes and crashes involving a driver with a blood alcohol concentration of 0.08 grams per deciliter or greater.

Implementation of New York and California’s statewide smoke-free policies was not associated with alcohol-related car crash fatalities. Additionally, analyses showed no effect of New York’s smoke-free policy on alcohol-related car crash fatalities in communities along the Pennsylvania-New York border.

Statewide smoke-free restaurant and bar laws do not appear to affect rates of alcohol-related car crashes.
A Loss of Moral Experience: Understanding HIV-Related Stigma in the New York City House and Ball Community
Authors: Galindo Gabriel R.
Published: December 2012

Objectives. I incorporated qualitative methods to explore how HIV-related stigma functions in New York City’s House and Ball Community (HBC).

Methods. From January through March 2009, I conducted 20 in-depth 1-on-1 interviews with a diverse sample of New York City HBC members. Interviews addressed perceptions of HIV-related stigma, the treatment of HIV-positive members in the community, and the potential impact of HIV-related stigma on risk behaviors.

Results. HIV-related stigma contributes to a loss of moral experience for HBC members. Moral experience (i.e., threats to what really matters in a community) disrupts established social connections and hinders the attainment of “ball status” (i.e., amassing social recognition) in the local world of these individuals.

Conclusions. My recommendations address HIV-related stigma in the New York City HBC from the vantage of moral experience and highlight the need for longitudinal studies of individual house members and for the implementation of stigma-focused interventions in the community that utilize the unique ball status hierarchy and HBC network to influence social norms surrounding the treatment of HIV-positive community members.
School and Community Predictors of Smoking: A Longitudinal Study of Canadian High Schools
Authors: Lovato Chris , Watts Allison , Brown K. Stephen , Lee Derrick , Sabiston Catherine , Nykiforuk Candace , Eyles John , Manske Steve , Campbell H. Sharon , Thompson Mary
Published: December 2012

Objectives. We identified the most effective mix of school-based policies, programs, and regional environments associated with low school smoking rates in a cohort of Canadian high schools over time.

Methods. We collected a comprehensive set of student, school, and community data from a national cohort of 51 high schools in 2004 and 2007. Hierarchical linear modeling was used to predict school and community characteristics associated with school smoking prevalence.

Results. Between 2004 and 2007, smoking prevalence decreased from 13.3% to 10.7% in cohort schools. Predictors of lower school smoking prevalence included both school characteristics related to prevention programming and community characteristics, including higher cigarette prices, a greater proportion of immigrants, higher education levels, and lower median household income.

Conclusions. Effective approaches to reduce adolescent smoking will require interventions that focus on multiple factors. In particular, prevention programming and high pricing for cigarettes sold near schools may contribute to lower school smoking rates, and these factors are amenable to change. A sustained focus on smoking prevention is needed to maintain low levels of adolescent smoking.
Mediators of the Socioeconomic Gradient in Outcomes of Adult Asthma and Rhinitis
Authors: Trupin Laura , Katz Patricia P. , Balmes John R. , Chen Hubert , Yelin Edward H. , Omachi Theodore , Blanc Paul D.
Published: December 2012

Objectives. We estimated the extent to which socioeconomic status (SES) gradients in adult asthma and rhinitis outcomes can be explained by home and neighborhood environmental factors.

Methods. Using survey data for 515 adults with either asthma or rhinitis, or both, we examined environmental mediators of SES associations with disease severity, using the Severity of Asthma Scale, and health-related quality of life (HRQL), using the Rhinasthma Scale. We defined SES on the basis of education and household income. Potential environmental mediators included home type and ownership, exposures to allergens and irritants, and a summary measure of perceived neighborhood problems. We modeled each outcome as a function of SES, and controlled for age, gender, and potential mediators.

Results. Gradients in SES were apparent in disease severity and HRQL. Living in a rented house partially mediated the SES gradient for both severity and HRQL (P < .01). Higher perceived levels of neighborhood problems were associated with poorer HRQL and partially mediated the income–HRQL relationship (P < .01).

Conclusions. Differences in home and neighborhood environments partially explained associations of SES with adult asthma and rhinitis outcomes.
Assessment of a 1-hour gridded precipitation dataset to drive a hydrological model: a case study of the summer 2007 floods in the Upper Severn, UK
Authors: Parkes B. L. , Wetterhall F. , Pappenberger F. , He Y. , Malamud B. D. , Cloke H. L.
Published: December 2012

In this study a gridded hourly 1-km precipitation dataset for a meso-scale catchment (4,062 km2) of the Upper Severn River, UK was constructed using rainfall radar data to disaggregate a daily precipitation (rain gauge) dataset. The dataset was compared to an hourly precipitation dataset created entirely from rainfall radar data. Results found that when assessed against gauge readings and as input to the Lisflood-RR hydrological model, the rain gauge/radar disaggregated dataset performed the best suggesting that this simple method of combining rainfall radar data with rain gauge readings can provide temporally detailed precipitation datasets for calibrating hydrological models.
Estimating daily reference evapotranspiration using available and estimated climatic data by adaptive neuro-fuzzy inference system (ANFIS) and artificial neural network (ANN)
Authors: Pour-Ali Baba Ana , Shiri Jalal , Kisi Ozgur , Fard Ahmad Fakheri , Kim Sungwon , Amini Rouhallah
Published: December 2012

Daily reference evapotranspiration (ET0), as a dependent variable, was estimated for two weather stations in South Korea, using 8 years (1985–1992) of measurements of independent variables of air temperature, sunshine hours, wind speed and relative humidity. The model uses the adaptive neuro-fuzzy inference system (ANFIS) and artificial neural networks (ANNs) for estimating daily ET0. In the first part of the study, the applied models were trained, tested and validated using various combinations of the recorded independent variables, which corresponded to the Hargreaves–Samani, Priestly–Taylor and FAO56-PM equations. The goodness of fit for the models was evaluated in terms of the coefficient of determination (R2), root mean square error (RMSE), mean absolute error (MAE) and Nash–Sutcliffe coefficient (NS). In the second part of the study, the estimated solar radiation data were applied as input parameters (for the same input combinations, as the first part), instead of recorded sunshine values. The results indicated that the both applied ANFIS and ANN models performed quite well in ET processes from the available climatic data. The results also showed that the application of estimated solar radiation data instead of the recorded sunshine values decreases the models’ accuracy.
A hydrological assessment of the November 2009 floods in Cumbria, UK
Authors: Miller J. D. , Kjeldsen T. R. , Hannaford J. , Morris D. G.
Published: December 2012

In November 2009, record-breaking rainfall resulted in severe, damaging flooding in Cumbria, in the north-west of England. This paper presents an analysis of the river flows and lake levels experienced during the event. Comparison with previous maxima shows the exceptional nature of this event, with new maximum flows being established at 17 river flow gauging stations, particularly on catchments influenced by lakes. The return periods of the flood peaks are estimated using the latest Flood Estimation Handbook statistical procedures. Results demonstrate that the event has had a considerable impact on estimates of flood frequency and associated uncertainty. Analysis of lake levels suggests that their record high levels reduced their attenuating effect, significantly affecting the timing and magnitude of downstream peaks. The peak flow estimate of 700 m3s–1 at Workington, the lowest station on the Derwent, was examined in the context of upstream inputs and was found to be plausible. The results of this study have important implications for the future development of flood frequency estimation methods for the UK. It is recommended that further research is undertaken on the role of abnormally elevated lake levels and that flood frequency estimation procedures in lake-influenced catchments are reviewed.
Measurements of wind-induced loss of solid precipitation: description of a Norwegian field study
Authors: Wolff Mareile , Isaksen Ketil , Brækkan Ragnar , Alfnes Eli , Petersen-Øverleir Asgeir , Ruud Erik
Published: December 2012

Precipitation measurements have a well-documented and mostly wind-dependent bias which is especially apparent during solid precipitation events. The resulting inaccuracy in precipitation data remains an area of concern in quantifying regional and global climate trends. As a high-latitude country, Norway has many solid precipitation events often accompanied by high wind speeds where the current adjustment functions have only limited validity. The presented study aims at improving the quality of solid precipitation data. In a comprehensive field experiment, precipitation data of standard automatic gauges are compared with data of a reference gauge surrounded by a double fence construction to minimize wind impact. Additional meteorological parameters are measured at the test site, allowing for an in-depth analysis of high-temporal-resolution precipitation data. The goal is to develop new adjustment functions for solid precipitation measurements which account for Norway's typical climate and are suitable for automated measurements. Measurements began in winter 2010/2011 at the alpine test site in southern Norway (chosen after a pre-study in 2009/2010) and will continue for two more winters. In this paper, the test site and its instrumentation are described and preliminary results are presented.
A satellite perspective on jökulhlaups in Greenland
Authors: Larsen Morten , Tøttrup Christian , Mätzler Eva , Naamansen Bo , Petersen Dorthe , Thorsøe Kisser
Published: December 2012

Methods by remote sensing techniques were developed to locate potential jökulhlaup lakes and to assess the volume of water discharged. To locate potential jökulhlaup lakes, a time sequence of LandSat satellite imagery covering the area was investigated with spectral mapping techniques. The investigations showed how LandSat images can be used to map surface water, glacial ice, and surface temporal anomalies, and when combined with geographic information system (GIS) analysis, potential jökulhlaup lakes could be identified. For assessing the volume of the water discharged, the bottom topography for the jökulhlaup lakes were mapped from stereo images acquired by the ASTER satellite sensor and thereby defining the relations between the lake surface areas and the volumes of water stored in the lakes. Annual lake areas outlined from LandSat images were combined with the area-volume relations to describe the change over time in the volume of water in the lakes and thereby the volume released during jökulhlaups. The results of the volume assessments were validated against recordings from a hydrological station in the downstream lake. The validation underpinned the credibility of the method and as it relies on satellite data that are readily available, the method is applicable for use in many areas of the world.
The Effect of Anterior Cruciate Ligament Reconstruction on the Progression of Osteoarthritis
Authors: Norris Rory , Thompson Pete , Getgood Alan
Published: December 2012

Anterior cruciate ligament rupture (ACL) is a common injury, particularly among young sporting adults. Early onset osteoarthritis (OA) can be a devastating and difficult to manage consequence of such an injury. The techniques for reconstructing the ACL are advancing all the time, but the effect that this has on the progression of OA is less well understood. Many factors affect the development of OA following an ACL injury, including direct and indirect trauma to the articular cartilage, associated meniscal injuries, chronic tibiofemoral joint instability, and multiple enzymatic pathways. This review will summarize the current evidence surrounding each of these areas, and describe some of the recent developments that may have an impact on the management of these injuries in the future.
Current Concepts of Prophylactic Antibiotics in Trauma: A Review
Authors: Lane Jennifer CE , Mabvuure Nigel Tapiwa , Hindocha Sandip , Khan Wasim
Published: December 2012

Traumatic injuries cause 5.8 million deaths per year globally. Before the advent of antibiotics, sepsis was considered almost inevitable after injury. Today infection continues to be a common complication after traumatic injury and is associated with increases in morbidity and mortality and longer hospital stays. Research into the prevention of post-traumatic infection has predominantly focused on thoracic and abdominal injuries. In addition, because research on sepsis following musculoskeletal injuries has predominantly been on open fractures. There is a paucity of research into the prevention of soft tissue infections following traumatic injuries. This review analyses the evidence for the role of prophylactic antibiotics in the management of soft tissue injuries. Emphasis is placed on assessing the strength of the presented evidence according to the Oxford Level of Evidence scale.
Osteoarthritis: New Insights in Animal Models
Authors: Longo Umile Giuseppe , Loppini Mattia , Fumo Caterina , Rizzello Giacomo , Khan Wasim Sardar , Maffulli Nicola , Denaro Vincenzo
Published: December 2012

Osteoarthritis (OA) is the most frequent and symptomatic health problem in the middle-aged and elderly population, with over one-half of all people over the age of 65 showing radiographic changes in painful knees. The aim of the present study was to perform an overview on the available animal models used in the research field on the OA. Discrepancies between the animal models and the human disease are present. As regards human ‘idiopathic’ OA, with late onset and slow progression, it is perhaps wise not to be overly enthusiastic about animal models that show severe chondrodysplasia and very early OA. Advantage by using genetically engineered mouse models, in comparison with other surgically induced models, is that molecular etiology is known. Find potential molecular markers for the onset of the disease and pay attention to the role of gender and environmental factors should be very helpful in the study of mice that acquire premature OA. Surgically induced destabilization of joint is the most widely used induction method. These models allow the temporal control of disease induction and follow predictable progression of the disease. In animals, ACL transection and meniscectomy show a speed of onset and severity of disease higher than in humans after same injury.
Update on the Management of Open Lower Limb Fractures
Authors: Griffin M , Malahias M , Khan W , Hindocha S
Published: December 2012

Open lower limb fractures pose a significant challenging pathology for orthopaedic and plastic surgeons to manage due to the combined soft tissue damage, bone loss and potential vascular compromise. These fracture require extensive team-work and expertise between several surgical specialties and the advice of non-surgical specialties to ensure good clinical outcomes. Extensive research has improved the outcomes of open lower limb fractures and current recommendation on the optimal management is always being updated to enhance patient outcomes. This review serves to provide an overview of the management of open tibial fractures using current evidence and recently updated UK guidelines. The optimal time for surgical debridement, surgical intervention, providing antibiotics and soft tissue coverage will be outlined as well as the indications for amputation.
Editorial
Authors: Ball Alexander
Published: December 2012

Alexander Ball, Production Editor, introduces Volume 7, Issue 2 (2012) of the International Journal of Digital Curation.
Developing Virtual CD-ROM Collections: The Voyager Company Publications
Authors: Brown Geoffrey
Published: December 2012

Over the past 20 years, many thousands of CD-ROM titles were published; many of these have lasting cultural significance, yet present a difficult challenge for libraries due to obsolescence of the supporting software and hardware, and the consequent decline in the technical knowledge required to support them. The current trend appears to be one of abandonment – for example, the Indiana University Libraries no longer maintain machines capable of accessing early CD-ROM titles.In previous work, we proposed an access model based upon networked ‘virtual collections’ of CD-ROMs which can enable consortia of libraries to pool the technical expertise necessary to provide continued access to such materials for a geographically sparse base of patrons, who may have limited technical knowledge.In this paper, we extend this idea to CD-ROMs designed to operate on ‘classic’ Macintosh systems with an extensive case study – the catalog of the Voyager Company publications, which was the first major innovator in interactive CD-ROMs. The work described includes emulator extensions to support obsolete CD formats and to enable networked access to the virtual collection.
The Data Management Skills Support Initiative: Synthesising Postgraduate Training in Research Data Management
Authors: Molloy Laura , Snow Kellie
Published: December 2012

This paper will describe the efforts and findings of the JISC Data Management Skills Support Initiative (‘DaMSSI’). DaMSSI was co-funded by the JISC Managing Research Data programme and the Research Information Network (RIN), in partnership with the Digital Curation Centre, to review, synthesise and augment the training offerings of the JISC Research Data Management Training Materials (‘RDMTrain’) projects.DaMSSI tested the effectiveness of the Society of College, National and University Libraries’ Seven Pillars of Information Literacy model (SCONUL, 2011), and Vitae’s Researcher Development Framework (‘Vitae RDF’) for consistently describing research data management (‘RDM’) skills and skills development paths in UK HEI postgraduate courses.With the collaboration of the RDMTrain projects, we mapped individual course modules to these two models and identified basic generic data management skills alongside discipline-specific requirements. A synthesis of the training outputs of the projects was then carried out, which further investigated the generic versus discipline-specific considerations and other successful approaches to training that had been identified as a result of the projects’ work. In addition we produced a series of career profiles to help illustrate the fact that data management is an essential component – in obvious and not-so-obvious ways – of a wide range of professions.We found that both models had potential for consistently and coherently describing data management skills training and embedding this within broader institutional postgraduate curricula. However, we feel that additional discipline-specific references to data management skills could also be beneficial for effective use of these models. Our synthesis work identified that the majority of core skills were generic across disciplines at the postgraduate level, with the discipline-specific approach showing its value in engaging the audience and providing context for the generic principles.Findings were fed back to SCONUL and Vitae to help in the refinement of their respective models, and we are working with a number of other projects, such as the DCC and the EC-funded Digital Curator Vocational Education Europe (DigCurV2) initiative, to investigate ways to take forward the training profiling work we have begun.
On groups admitting no integral Cayley graphs besides complete multipartite graphs
Authors: Abdollahi Alireza , Jazaeri Mojtaba
Published: December 2012

Let G be a non-trivial finite group, S ? G \ {e} be a set such that if a 2 S,
then a-1 ? S and e be the identity element of G. Suppose that Cay(G, S) is
the Cayley graph with the vertex set G such that two vertices a and b are
adjacent whenever a-1 ? S. An arbitrary graph is called integral whenever
all eigenvalues of the adjacency matrix are integers. We say that a group G
is Cayley integral simple whenever every connected integral Cayley graph on
G is isomorphic to a complete multipartite graph. In this paper we prove
that if G is a non-simple group, then G is Cayley integral simple if and
only if G ? Zp2 for some prime number p or G ? Z2 x Z2. Moreover, we show
that there exist finite non-abelian simple groups which are not Cayley
integral simple.
Characteristics of blackberry and raspberry seeds and oils
Authors: Dimic Etelka , Vujasinovic Vesna , Radocaj Olga , Pastor Orsolja
Published: December 2012

This study is concerned with the determination of technological quality
characteristics of dried pomaces, i.e. blackberry and raspberry seeds, along
with the quality parameters, content of total carotenoids and chlorophyl and
transparency of crude extracted oil (using organic solvent). Blackberry seeds
(Rubus fruticosus L.) were obtained from a domestic variety Cacanska bestrna,
while the raspberry seeds (Rubus idaeus L.) were of the variety Willamette.
Oil content of the blackberry pomace was 13.97 and 14.34%, while the oil
content of the raspberry pomace was 13.44 and 14.33% on dry basis (d.b.). In
regard to technological characteristics of the pomaces, i.e. volumetric and
specific weight, no considerably difference was found. However, a weight test
for 1000 seeds showed a significant difference in weight: 3.5 g (d.b.) for
the blackberry pomace and 1.5 g for the raspberry pomace (d.b.). Proximate
analysis of blackberry seed oil showed that this oil had better quality since
the FFA value was 3.43% (sample B1) and 3.53% (sample B2), while the peroxide
value was 8.89 and 11.16 mmol/kg, respectively. Raspberry seed oil had higher
FFA (8.59 and 8.83% for sample R1 and R2) and peroxide values (13.99 and
13.84 for sample R1 and R2) than the blackberry seed oil. Crude extracted
blackberry seed oil had a brown-greenish color due to the high total
chlorophyll content (around 3000 mg/kg dissolved in cyclohexane). Raspberry
seed oil had a dark yellowishorange color, due to lower chlorophyll content
(around 200 mg/kg) compared to the blackberry seed oil, while the content of
total carotenoids was slightly higher in this oil (around 40 mg/kg) compared
to the blackberry seed oil (33 mg/kg).
Volatile compounds of functional dairy products
Authors: Ilicic Mirela , Milanovic Spasenija , Caric Marijana , Kanuric Katarina , Vukic Vladimir , Hrnjez Dajana , Ranogajec Marjan
Published: December 2012

Volatile compounds, affecting flavour of traditional and probiotic fresh
cheese, were determined. Functional dairy product-fresh cheese was produced
from milk of 2.5% fat content and milk of 4.2% fat content, under the
semi-industrial conditions. The traditional starter culture Flora Danica (FD)
and a combination of probiotic starter ABT-1 and FD (ABT-1:FD=1:1) were
applied as starters. The volatile fractions were isolated by employing the
combined simultaneous distillation-extraction technique (SDE). The compounds
were identified by gas chromatography - mass spectrometry (GC-MS) and
quantified by using standard procedure. Following 19 compounds have been
identified: 8 hydrocarbons (decane, undecane, tridecane, tetradecane,
pentadecane, hexadecane, octadecane and 2, 6, 10, 14-tetramethyl hexadecane);
6 ketones (2-heptanone, 2-nonanone, 2- undecanone, 2-pentadecanone,
2-heptadecanone and 2-tridecanone); 3 aldehydes (nonanal, tetradecanal and
hexadecanal); 1 fatty acid (decanoic acid) and disulfide, bis
(1-methylethyl). The highest levels were associated with hexadecanal,
2-pentadecanone, 2-tridecanone, and 2-undecanone in all examined samples,
regardless to the starter culture and type of milk used.
Effects of sonication and high-pressure carbon dioxide processing on enzymatic hydrolysis of egg white proteins
Authors: Knezevic-Jugovic Zorica , Stefanovic Andrea , Zuza Milena , Milovanovic Stoja , Jakovetic Sonja , Manojlovic Verica , Bugarski Branko
Published: December 2012

The objectives of this study were to examine the effect of sonication and
high-pressure carbon dioxide processing on proteolytic hydrolysis of egg
white proteins and antioxidant activity of the obtained hydrolysates. It
appeared that the ultrasound pretreatment resulted in an increase in the
degree of hydrolysis of the enzymatic reaction while the high-pressure carbon
dioxide processing showed an inhibition effect on the enzymatic hydrolysis of
egg white proteins to some extent. The antioxidant activity of the obtained
hydrolysates was improved by ultrasound pretreatment of egg white proteins at
the pH 8.3. Thus, the combination of ultrasound pretreatment at the pH 8.3
and subsequent enzymatic hydrolysis with alcalase at 50?C and pH 8.0 could
offer a new approach to the improvement of the functional properties of egg
white proteins and their biological activity.
Direct determination of calcium, sodium and potassium in fermented milk products
Authors: Kravic Snezana , Suturovic Zvonimir , Djurovic Ana , Brezo Tanja , Milanovic Spasenija , Malbasa Radomir , Vukic Vladimir
Published: December 2012

The aim of this study was the investigation of the possibilities of direct
determination of calcium, sodium and potassium in the commercial and
kombucha-based fermented milk products by flame photometry. Two procedures
were used for sample preparation: simple dilution with water (direct method)
and extraction with mineral acid. Calcium, sodium and potassium levels
determined after mentioned sample preparation methods were compared. The
results showed that the differences between the values obtained for the
different sample treatment were within the experimental error at the 95%
confidence level. Compared to the method based on extraction with mineral
acid, the direct method is efficient, faster, simpler, cheaper, and operates
according to the principles of Green Chemistry. Consequently, the proposed
method for the direct determination of calcium, sodium and potassium could be
applied for the rapid routine analysis of the mineral content in the
fermented dairy products.
Physical and textural characteristics of fermented milk products obtained by kombucha inoculums with herbal teas
Authors: Malbasa Radomir , Vitas Jasmina , Loncar Eva , Milanovic Spasenija
Published: December 2012

In this investigation, kombucha fermented milk products were produced from
milk with 1.6% milk fat using 10% (v/v) kombucha inoculums cultivated on the
extracts of peppermint and stinging nettle. The fermentation process was
conducted at temperatures of 37, 40 and 43?C. Fermentation was stopped when
the pH value of 4.5 was reached. The fermentation process was shortened with
an increase of temperature. Physical characteristics of the fermented
products were determined by using standard methods of analysis. Textural
characteristics were determined by texture profile analysis. The obtained
products showed good physical and textural characteristics, typical for the
yoghurt-like products.
Starch properties of various ZP maize genotypes
Authors: Milasinovic-Seremesic Marija , Radosavljevic Milica , Dokic Ljubica
Published: December 2012

The objective of this study was to investigate molecular and functional
properties of starches isolated from ZP maize genotypes of different genetic
background. The protein, fat, ash and resistant starch contents were very
low. The amylose content in the isolated starches of 10 ZP maize genotypes
was characteristic for both types of maize starches, normal and waxy. The
waxy type had the highest average molecular weight of amylopectin (4.84 x 108
Da). The onset temperature of gelatinisation values of starches of 10 ZP
maize genotypes ranged from 62.1?C to 65.0?C. The waxy maize starch displayed
a significantly higher enthalpy change for gelatinised starch (?H=18.1 J/g)
than normal maize starches did (?H=13.6-15.6 J/g). Rapid Visco Analyser (RVA)
profiles of starches of ZP maize genotypes were typical for both types of
maize starches, normal and waxy.
Modification of the method for determining protein solubility of heat treated full-fat soybeans using extraction in potassium hydroxide: Inter-laboratory study
Authors: Palic Dragan , Kedibone Modika , Oelofse Andre , Sakac Marijana
Published: December 2012

Among a number of laboratory methods used to estimate the adequacy of heat
treatment applied to full-fat soybean (FFSB) protein solubility in potassium
hydroxide (PSKOH) is an unofficial method, but it is used by many
laboratories due to its simplicity. It has been reported that the results of
PSKOH analysis of the same sample of FFSB on the degree of heat treatment
vary widely between laboratories. In this study, the original PSKOH method
has been modified and subjected to an inter-laboratory test, with
participation of 9 laboratories. Eight FFBS samples were processed by dry
extrusion at temperatures ranging from 110 to 164?C and analysed on PSKOH.
Processed FFSB samples were also assessed in a growth trial with broilers.
Analysis of FFSB by the PSKOH method generated for adequately-processed FFSB
values between 67.1 and 76.5%. The values above 76.5% corresponded to
under-processed and below 67.1% to over-processed FFSB. The PSKOH method
generated good precision, i.e. the repeatability and reproducibility limits
of 3.48 and 10.86 %, respectively. The modified PSKOH method can be
recommended as a reliable indicator for quality control of heat processed
FFSB for the use in routine laboratory practice. This study could pave the
way for establishing PSKOH as an official method for determining the
nutritional value of FFSB following heat treatment.
The nutritive value of poultry diets containing sunflower meal supplemented by enzymes
Authors: Sredanovic Slavica , Levic Jovanka , Jovanovic Rade , Djuragic Olivera
Published: December 2012

The international limitations imposed on the utilization of meat and bone
meals in animal diets, together with the increasing demand for soybean meal,
create a necessity to search for other protein sources to economically
balance compound feeds. In this regard it is important to note that sunflower
is the best adapted high-protein crop available in some European regions and
that is useful to use it in poultry farming as the replacement of other
protein sources. Protein and many other nutrients are ?imprisoned? to
variable degrees, inside sunflower meal fibrous structures, and remain less
available for digestion by the poultry?s own proteases and other endogenous
enzymes. Added exogenous enzymes (phytase, hemicellulase, cellulase,
carbohydrase, protease, etc.) offer a number of creative possibilities for
breakdown and ?liberation? of these nutrients, their easier digestion and
absorption, and thus development of new nutritional standards and new diets
formulation. Supplementation of poultry diets containing sunflower meal by
different enzymes increasingly contribute to sustainable poultry farming by
enhancing production efficiency, increasing the effectiveness of nutrient
utilization and upgrading in environmental protection.
Chemical composition and antioxidant activity of berry fruits
Authors: Stajcic Sladjana , Tepic Aleksandra , Djilas Sonja , Sumic Zdravko , Canadanovic-Brunet Jasna , Cetkovic Gordana , Vulic Jelena , Tumbas Vesna
Published: December 2012

The main chemical composition, contents of total phenolic (TPh), total
flavonoid (TF), and total monomeric anthocyianin (TMA), as well as the
antioxidant activity of two raspberry cultivars (Meeker and Willamette), two
blackberry cultivars (Cacanska bestrna and Thornfree) and wild bilberry were
studied. The raspberry cultivars had the highest total solids among fruits
investigated. Bilberry fruits had the highest sugar-to-acid ratio. Blackberry
fruits were richer in crude fibers (cellulose) in comparison to raspberry and
bilberry fruits. The content of pectic substances was highest in the
bilberry. Also, bilberry had a highest content of TPh (808.12 mg GAE/100 g
FW), TF (716.31 mg RE/100 g FW) and TMA (447.83 mg CGE/100 g FW). The
antioxidant activity was evaluated spectrophotometrically, using
2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity assay. The
DPPH free radical scavenging activity, expressed as the EC50 value (in mg of
fresh weight of berry fruit per ml of the reaction mixture), of bilberry
(0.3157 ? 0.0145 mg/ml) was the highest. These results also showed that the
antioxidant value of 100 g FW bilberry, raspberry - Willamette, raspberry -
Meeker, blackberry - Cacanska bestrna and blackberry - Thornfree is
equivalent to 576.50 mg, 282.74 mg, 191.58 mg, 222.28 mg and 272.01 mg of
vitamin C, respectively. There was a significant positive correlation between
the antioxidant activities and content of total phenolics (RTPh 2=0.9627),
flavonoids (RTF 2=0.9598) and anthocyanins (RTMA 2=0.9496) in berry fruits.
Traditional manufacturing of white cheeses in brine in Serbia and Montenegro: Similarities and differences
Authors: Veskovic-Moracanin Slavica , Mirecki Slavko , Trbovic Dejana , Turubatovic Lazar , Kurcubic Vladimir , Maskovic Pavle
Published: December 2012

This paper presents the results of a study dealing with the processes in the
production of white cheese in brine, which are based on old, traditional
technologies and are produced in Serbia (near Nova Varos - Cheese from
Zlatar) and Montenegro (Podgorica and the surrounding of Danilovgrad). In
both cases, fresh cow's milk without heat treatment is used as a raw
material. The paper presents the most important chemical quality parameters
with the description of sensory properties. The autochthonous cheese in brine
from both area, show distinct and characteristic sensory properties of the
product, and also a high level of quality with the presence of certain
individual differences. This research was aimed at a comparison of the
autochthonous technologies, to save them from oblivion, and also to show the
quality parameters of cheese which are similar according to the technological
process, but are also very authentic.
The impact of the manufacturing process on the hardness and sensory properties of milk chocolate
Authors: Zaric Danica , Pajin Biljana , Loncarevic Ivana , Soronja-Simovic Dragana , Seres Zita
Published: December 2012

The aim of this paper was to examine the impact of the manufacturing process
on the textural characteristics and sensory properties of milk chocolate. The
research was conducted on the samples of chocolate produced in a ball mill
during 30, 60 and 90 minutes of refining, each of them being pre-crystallized
at 26, 28 and 30?C. A chocolate mass of identical ingredient composition was
also produced using a standard manufacturing process at the same
pre-crystallization temperatures. Chocolate hardness was examined using a
piece of equipment called Texture Analyser, measuring the stress intensity
which leads to chocolate crushing. Sensory analysis was performed using the
point scoring method. The new manufacturing process, i.e. the manufacturing
of chocolate in a ball mill improves sensory properties and hardness of milk
chocolate.
Partitioning of cellulolytic activity in the polyethylene glycol/dextran two-phase systems
Authors: Antov Mirjana , Jugovic Branimir , Gvozdenovic Milica , Knezevic-Jugovic Zorica
Published: December 2012

This study is concerned with the partitioning of cellulolytic activity in the
polyethylene glycol/dextran two-phase systems. In the system of 10% (w/w)
polyethylene glycol 1500/5% (w/w) dextran 500,000/80% (w/w) crude enzyme at
the pH 5, 100%, yield of cellulolytic activity from Penicillium sp. in the
top phase was achieved in a single extraction step. Addition of KH2PO4 to
this system at a concentration of 15 mmol/L improved the purification factor
in the top phase for cellulolytic activity from crude preparation to a value
of 2.6, although it had an adverse effect on the yield in the same phase.
Finite element simulation of sink pass round tubes using Ansys
Authors: Nagarkar M.P. , Zaware R.N. , Ghalme S.G.
Published: December 2012

Modeling and simulation of metal forming processes are increasingly in demand
from the industry as the resulting models are found to be valuable tools
considering the optimization of the existing and development of new
processes. By the application of modeling and simulation techniques, it is
possible to reduce the number of time-consuming experiments such as
prototyping. Seamless tubes of various sizes and shapes are manufactured by
various processes like sinking, fixed plug, floating plug, moving mandrel,
cold working and hot working. The present work deals with the simulation of
round tubes while passing through the sink pass, using ANSYS software. The
simulation results are the displacement and von Mises stresses. The procedure
can be used to improve the product quality and to study the effect of various
parameters like die angle on the product quality.
Tension mechanical properties of recycled glass-epoxy composite material
Authors: Petrovic Jelena , Ljubic Darko , Stamenovic Marina , Dimic Ivana , Putic Slavisa
Published: December 2012

The significance of composite materials and their applications are mainly due
to their good properties. This imposes the need for their recycling, thus
extending their lifetime. Once used composite material will be disposed as a
waste at the end of it service life. After recycling, this kind of waste can
be used as raw materials for the production of same material, which raises
their applicability. This indicates a great importance of recycling as a
method of the renowal of composite materials. This study represents a
contribution to the field of mechanical properties of the recycled composite
materials. The tension mechanical properties (tensile strength and modulus of
elasticity) of once used and disposed glass-epoxy composite material were
compared before and after the recycling. The obtained results from mechanical
tests confirmed that the applied recycling method was suitable for
glass-epoxy composite materials. In respect to the tensile strength and
modulus of elasticity it can be further assessed the possibility of use of
recycled glass-epoxy composite materials.
Hydrodynamics of gas-agitated liquid-liquid extraction columns
Authors: Sovilj Milan
Published: December 2012

Although the non-agitated extraction columns (spray column, packed column,
perforated plate column, sieve plate column, etc) can handle high flow rates
and are simple and cheap, there have been relatively few applications of
these columns because they suffer from serious backmixing of the continuous
phase. It was shown that the backmixing is reduced when the spray column is
operated with dense packing of drops. Another way of increasing the
efficiency of a non-agitated extraction column is to introduce an inert gas
(air, nitrogen, oxygen) as a mixing agent in the two-phase liquid-liquid
(L-L) system. This method of energy introduction increases the turbulence
within the new three-phase gas-liquid-liquid (G-L-L) system, which causes an
improved dispersion of droplets, and, consequently, a higher dispersed phase
holdup and therefore a great mass transfer area. The present study reports
the hydrodynamics in the non-agitated extraction columns, as well as the
axial dispersion for the two- and three-phase systems.
Influence of the operating parameters on the flux during microfiltration of the steepwater in the starch industry
Authors: Seres Zita , Dokic Ljubica , Pajin Biljana , Soronja-Simovic Dragana , Subaric Drago , Babic Jurislav , Fistes Aleksandar
Published: December 2012

The subject of the work is the possibility of applying microfiltration
through a ceramic tubular membrane with 100 nm pore sizes to the steepwater
obtained in the production process of corn starch. The dry matter content
should be reduced in the steepwater permeate. Thus the consumption of the
process water would be reduced, the nutrients from the steepwater could be
exploited as feed and the wastewater problem would consequently be solved.
The objective of the work was to examine the influence of the operating
parameters on the permeate flux during steepwater microfiltration. The
parameters that vary in the course of microfiltration, were the transmembrane
pressur and flow rate, while the permeate flux and dry matter content of the
permeate and retentate were the dependent parameters, constantly monitored
during the process. Another objective of this study was to investigate the
influence of static turbulence promoter on the permeate flux during
steepwater microfiltration. Static mixers enhance permeate flux, thus the
microfiltration can be performed longer. As a result of the statistical
analysis, the optimal conditions for steepwater microfiltration were
determined. The maximum value of the permeate flux without mixer (25 lm-2h-1)
was achieved at a pressure of 2 bars and a flow rate around 100 lh-1. With
the use of static mixer the flux is 2,5 times higher compared to the one
obtained without the mixer. The dry matter content of the permeat after 2.5
hours of mucrofiltration was lowered by 40%.
Antibacterial activity of lemon, caraway and basil extracts on Listeria spp.
Authors: Dimic Gordana , Kocic-Tanackov Suncica , Jovanov Olivera , Cvetkovic Dragoljub , Markov Sinisa , Velicanski Aleksandra
Published: December 2012

Commercial extracts of three spices (lemon, caraway and basil) against
Listeria monocytogenes, L. innocua and L. welshimeri were investigated using
disc diffusion method. Lemon and basil extracts inhibited all the organisms
at the level of ? 5 ?l (lemon) and 20 ?l (basil). These extracts produced
inhibitory zones of 9-19 mm (lemon) and 8-11.5 mm (basil). The extract of
caraway showed activity only against L. innocua at the highest level (20 ?l),
producing an inhibitory zone of 14.7 mm. Generally, the lemon extract was the
most effective. This extract exhibited greater inhibitory activity against L.
monocytogenes, while the basil extract had the strongest effect on L.
welshimeri.