bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Various Herbicides on Warm‐season Grass Weeds and Switchgrass Establishment
Authors: Kering Maru K. , Huo Chengjun , Interrante Sindy M. , Hancock Dennis W. , Butler Twain J.
Published: January 2013

Switchgrass (Panicum virgatum L.) is typically slow and difficult to establish. Field experiments evaluated switchgrass establishment and the response of warm‐season grass weeds (large crabgrass [Digitaria sanguinalis (L.) Scop.], broadleaf signalgrass [Urochloa platyphylla (Munro ex C. Wright) R.D. Webster], Johnsongrass [Sorghum halepense (L.) Pers.], and Texas panicum [Urochloa texana (Buckley) R.D. Webster]) to a preemergence (cloransulam) or postemergence (foramsulfuron, pendimethalin, quinclorac, foramsulfuron + pendimethalin + quinclorac, nicosulfuron, nicosulfuron + pendimethalin + quinclorac, nicosulfuron + quinclorac + atrazine, and monosodium methanearsonate [MSMA]) herbicides. Experimental design was a split‐split‐plot design with presence/absence of preemergence herbicide cloransulam as main plot, weed species as subplot treatment, and postemergence herbicides as sub‐subplot treatments. Herbicides foramsulfuron + pendimethalin + quinclorac was applied at the 1‐ to 2‐ and 2‐ to 3‐leaf stage, whereas nicosulfuron was applied at 2‐ to 3‐leaf stage and nicosulfuron combinations and MSMA were applied at 3‐ to 4‐leaf stage. Using cloransulam as a preemergence herbicide resulted in lower switchgrass seedling numbers and generally did not improve establishment. Interseeding Johnsongrass allowed for the greatest number of switchgrass seedlings and was the least competitive weed, whereas interseeding large crabgrass resulted in the least amount of switchgrass and proved to be the most competitive weed. Foramsulfuron + pendimethalin + quinclorac resulted in effective weed control (>70%) for all four species evaluated and improved switchgrass establishment (13–26%) compared to the untreated control (0–3%); however, greater improvement in stand establishment is needed.
Space‐Plant versus Sward‐Plot Evaluation of Half‐Sib Families to Select Parents for Synthetic Cultivars with Superior Biomass Yield in Lowland Switchgrass
Authors: Bhandari H.S. , Fasoula V. A. , Bouton J.H.
Published: January 2013

Switchgrass (Panicum virgatum L.) needs significant biomass yield improvement for its viable use as bioenergy feedstock. Conventional family evaluation under sward plot is very effective in cultivar improvement, but it is time and resource consuming. Family evaluation under space planting using honeycomb design can reduce time and inputs. The objective of this study was to compare conventional sward‐plot and modified space‐plant evaluation of half‐sib families in their biomass yield gain and resource use. Using same initial set of genotypes selected from ‘Alamo’, two experimental synthetics were developed by the following methods: (i) summer field polycrossing of selected genotypes to produce half‐sibs, half‐sib family evaluation under sward plot conditions (HSSward) at two locations for 2 yr, and polycrossing the five genotypes showing superior half‐sibs to produce the experimental and (ii) greenhouse polycrossing genotypes during the winter to produce half‐sibs, half‐sib family evaluation under space‐plant conditions using honeycomb design (HSSpace) for 2 yr at one location, and polycrossing the five best progeny within the five superior half‐sibs to produce the experimental. The 2 to 3 yr biomass yield performance of two experimentals across five locations demonstrated that both HSSward and HSSpace led to a significant biomass yield gain over Alamo in three and two of the five locations, respectively. The HSSward produced a superior and more stable synthetic across a wide region than HSSpace. However, the HSSpace produced its synthetic a year sooner and was more resource efficient and, under finite resources, it could be a method of choice for cultivar development especially for a narrow geographic region.
Members of 3-O-Sulfotransferases (3-OST) Family: A Valuable Tool from Zebrafish to Humans for Understanding Herpes Simplex Virus Entry
Authors: Baldwin John , Shukla Deepak , Tiwari Vaibhav
Published: January 2013

The journey of many viruses to infect cells begins when the virus first binds to cell surface heparan sulfate (HS). The initial step of cell attachment or binding during herpes simplex virus type-1 (HSV-1) entry is mediated by envelope glycoprotein B (gB) and C (gC). The binding is followed by fusion between virus envelope and cell membrane during which HSV-1 glycoprotein D (gD) interacts with a modified form of HS know as 3-O-sulfated heparan sulfate (3-OS HS). The rare modification of 3-O-sulfation on HS chain is governed by enzymes known as 3-O-sulfotransferase (3-OST). Currently, there are seven isoforms of human 3-OSTs that have been identified, and with the exception of 3-OST-1, all other 3-OST isoforms allow HSV-1 entry and spread. Recently, the product of the zebrafish (ZF)-encoded 3-OST-3 was also recognized as a gD receptor, which mediates HSV-1 entry and cell-cell fusion similar to human 3-OST-3. Interestingly, the ZF system expresses multiple isoforms of 3-OST which could be very useful for studying the involvement of HS and 3-OS HS in virus tropism and virus-induced inflammation. In addition, therapeutic targeting of 3-OST generated HS is likely to bring about novel interventions against HSV-1. In this review we have taken a closer look at the potential of both human and ZF encoded 3-OSTs as valuable tools in HSV entry and inflammation studies.
Postharvest shelf life of tomato (Lycopersicon esculentum Mill.) mutanats (nor and rin) and their hybrids
Authors: Cvikic Dejan , Zdravkovic Jasmina , Pavlovic Nenad , Adzic Sladjan , Djordjevic Mladen
Published: January 2013

Two tomato lines with normal maturation (NR-1 and NR-2) have been crossed
with two mutant lines (NR-10 nor and NR-12 rin) with delayed maturation
(shelf life). Determination of mutant genes has been done by ?2 test on 100
fruits from F2 generation. Fruits have been picked 65 days from antesis and
kept for 60 days, when six evaluations have been done. Data have been
collected every 10 days on parental lines and progeny F1 and F2 generation.
Variance testing has been done on the basis of one- and two-factorial
analysis and groups compared by contrasts. Fruits have been preserved in
controlled conditions (in dark at 5?C). Tomato genotypes with nor or rin gene
had desirable traits (delayed ripening, long shelf life and firm fruits) for
modern selection, so they should be included in programmes aiming to create
commercial F1 hybrids.
Research into service tree (Sorbus domestica L.) population in eastern Serbia
Authors: Miletic Rade , Paunovic Svetlana
Published: January 2013

All fruit tree populations along with the service tree (Sorbus domestica L.)
population offer a wealth of diverse genetic material which is essential for
the selection and creation of new cultivars and rootstocks. The main
objective of the study was to evaluate the service tree population in Eastern
Serbia in order to single out good selections whose fruit can be used fresh
or processed in the human diet, as well as genotypes suitable for the
development of new cultivars and rootstocks. The service tree population was
analyzed for tree age, tree size and major fruit properties (shape, size and
soluble solids content). Small-sized, medium to large and large fruits
ranging in weight from 7.5-9.8 g, 10.3-18.6 g and 21.7-25.6 g were found in
52.3%, 41.1% and 6.60% trees, respectively, within the test population. Fruit
length was 18.6-33.4 mm, fruit thickness 22.8-37.4 mm, stalk length 1.8-3.7
mm, soluble solids content 15.7-22.5%. The study also presents properties of
some superior trees which require greater attention in terms of propagation,
collection activities and commercial cultivation.
Sex ratios in natural populations of Drosophila pseudoobscura from Mexico
Authors: Salceda Victor , Arceo-Maldonado Carolina
Published: January 2013

Most species show an equal proportion of individuals of both sexes. In
diploid species sex ratio is determined by a genic balance between sex
chromosomes. In Drosophila sex is determined by the ratio of X- chromosomes
versus autosomes and in some species of the genus it is related to the
presence of an inversion in the sex chromosome. The present work analyses the
sex ratio in 27 natural populations of Drosophila pseudoobscura that inhabit
Mexico. Female flies captured in nature were counted and their sex ratio
calculated and been called generation P, then cultured individualy, allowed
to leave adult offspring which was quantified in order to get its sex ratio
and designated generation F1. sex ratio was calculated using the expression:
number of males times 100 divided by the number of females proposed by Darwin
(1871). The sex ratio of each population was taken using the average of all
the individual counts from each sample. The values found varied among
different generations and populations, so for generation P their values
varieded 37.4 to 190.4 and in generation F1 from 31.3 up to 96.4 males for
each 100 females. According to their geographical distribution four North to
South transects were arranged and in them means varied from 60.8 to 81.7
males for each 100 females. All this means that in Mexican population are
more females than males, exceptionally more males than females.
Diversity of nuclear short tandem repeat loci in representative sample of North-eastern Bosnian and Herzegovina population
Authors: Hadziavdic Vesna , Marjanovic Damir , Pojskic Naris , Hadziselimovic Rifat , Bajrovic Kasim , Dolicanin Zana , Eminovic Izet
Published: January 2013

Diversity of nuclear microsatellite markers were analyzed in a reference
sample of the population of northeast Bosnia and Herzegovina. 437 samples
taken from unrelated individuals were processed and three samples of
paternity proof were shown. Detection effectiveness profile of the research,
points to a valid choice of method of extraction, amplification and
genotyping short tandem repeat (STR) loci with PowerPlextm16 kit. Genetic
analysis of allelic variants of the 15 STR loci PowerPlextm16 kit detected 17
samples determined as rare allelic variants or microvariants. Samples were
divided into 15 different allelic variants at 7 different loci, and are: in
locus D7S820, D16S539, D3S1358, D18S51, PENTA D, PENTA E and in locus vWA.
Genetic analysis of mutations in cases of paternity determined three examples
of single-step mutations in the loci FGA, Penta D and D3S1358. Genetic
analysis of observed STR loci detected three allelic variant of genotype
combination 7/10/11.3 in locus D7S820 Type II. Population genetic analysis of
STR loci in a representative sample of the population of northeast Bosnia and
Herzegovina included the application of the assessment tests of
within-population genetic diversity and interpopulation diversity, as well as
genetic differentiation between populations: North-eastern Bosnia and
Herzegovina (BH) and BH general reference, then the Croatian population,
Macedonian, Serbian and Slovenian. Based on the result analysis of specific
forensic parameters, it can be assumed that the most informative marker is
PENTA E for population genetic analysis and forensic testing in the
population of northeast Bosnia and Herzegovina. Research results fit regional
STR database of this part of Europe.
The potential of different lime tree (Tilia spp) genotypes for phytoextraction of heavy metals
Authors: Sijacic-Nikolic Mirjana , Stankovic Dragica , Krstic Borivoj , Vilotic Dragica , Ivetic Vladan
Published: January 2013

The research of heavy metals contents (Pb, Mn, Zn, Ni, Fe) in soil in the
area of the National Park ?Fruska gora?, along the highway M21 shows lower
values for manganese, zinc and iron than the maximum allowed quantity
prescribed by law. For nickel and lead it shows higher values than maximum
allowed quantity. The heavy metals contents in leaves of lime tree in 12
analyzed genotypes are far below average values in accordance with ECCE with
all genotypes except genotype 7 for lead and genotypes 7 and 8 for iron. The
results of analysis of variance components show that out of four components
(locality, genotype, locality x genotype and error) only the interaction
between locality and genotype does not contribute to variance. The contents
of Pb, Mn, Fe and Zn in leaves is primarily influenced by genotype while Ni
contents may be considered a consequence of locality. The selection of
genotypes which is able to uptake greater quantities of heavy metals than
other genotypes may serve as a solid basis for phytoextraction of heavy
metals as a technology by which heavy metals, metalloids and radionuclides
are extracted from environment through usage of suitable species and plant
genotypes able to uptake and accumulate the given pollutants in parts of
plant tissue.
Ultrasound influence on coleoptile length at Poaceae seedlings as valuable criteria in prebreeding and breeding processes
Authors: Kratovalieva Suzana , Srbinoska Marija , Popsimonova Gordana , Selamovska Ana , Meglic Vladimir , Andjelkovic Violeta
Published: January 2013

The study includes research on the effect of ultrasound on the ability of
seed germination and coleoptile development of cereal landraces (fam.
Poaceae): oat (Avena sativa L.) brodski, rye (Secale cereale L.) rakotinska,
Triticale svetinikolsko and soft wheat (Triticum aestivum L.) govrlevska. The
experiment with ultrasound was carried out at frequency of 30-40 kHz on the
thermostatic ultrasonic bath. Seeds were sonicated at a constant temperature
(25?C) for 15 min. Ultrasound effect is reflected in the length of the
coleoptyl and mesocotyl, although in a good deal is genetically
predetermined. Coleoptile length was the longest in Triticale (3.3-5.5 cm)
and approximately the same lengths are evident in rye (3.0-6.1 cm).
Concerning the mesocotyl the longest one (5.525 cm ? 0.697) is recorded at
rye, even significantly longer than control of oat and Triticale. Longer
coleoptile of sonicated seeds indicates faster seedling development, good
water supply and rapid development and emergence of first leaves. Correlation
coefficient showed very high (0.821) and high R2 (67,472%) dependence among
variables both, in length of coleoptiles (as dependent variable) and
mesocotyl (as independent) with low standard error (0.225). With the simple
use of ultrasound the germination period could be shorten, water supply more
efficient, the sowing periods will be shorten and good yields even under
conditions of climate change with increased temperatures could be achieved.
Initial and final fruit set in some plum (Prunus domestica L.) hybrids under different pollination types
Authors: Glisic Ivana , Cerovic Radosav , Milosevic Nebojsa , Djordjevic Milena , Radicevic Sanja
Published: January 2013

The paper presents results of two-year study (2009-2010) of initial and final
fruit set in promising plum (Prunus domestica L.) hybrids developed at Fruit
Research Institute - Cacak, under different pollination conditions. The
following hybrids were studied: 38/62/70 (?Hall? x ?California Blue?),
32/21/87 (?Stanley? x ?Scoldus?), IV/63/81 (?Large Sugar Prune? x ?Scoldus?),
22/17/87 (?Cacanska Najbolja? x ?Zh'lta Butilcovidna?), 29/29/87 (?Stanley? x
?Scoldus?) and 34/41/87 (?Valjevka? x ?Cacanska Lepotica?). Each of the
hybrids was studied both under self- pollination and open pollination. In
vitro pollen germination was also performed as well as characteristics of
flowering phenophase and flowering abundance. Generally, the results suggest
lower flowering abundance in the second year of the study. Pollen germination
ranged from averagely 25.31% (29/29/87) to 40.01% (38/62/70). With averagely
31.59% final fruit set under self-pollination and 29.38% under open
pollination variants, respectively, hybrid 34/41/87 gave the best results.
The lowest performance was observed in hybrid 32/21/87 with 1.61% and 7.69%
final fruit set under self- and open pollination variants, respectively.
Combining ability and heterosis effect in hexaploid wheat group
Authors: Titan Primoz , Meglic Vladimir , Iskra Jernej
Published: January 2013

The main goal of hybrid wheat breeding is the identification of parents with
high specific combining ability for grain yield and other agronomic traits.
This kind of data facilitate the development of hybrid combinations with high
level of heterosis in first filial generation (F1 generation). The use of
species from the hexaploid wheat group (e.g. Triticum spelta L. Triticum
compactum HOST...) is representing an opportunity for the increase of
heterosis level in the germplasm of common wheat (Triticum aestivum L.). The
study of combining ability and heterosis effect in hexaploid wheat group was
carried out using crosses between thirteen inbred lines of common wheat (6
lines x 7 testers) and inter-species crosses (T. aestivum L. ? T. spelta L.,
T. aestivum L. ? T. compactum HOST, T. aestivum L. ? T. sphaerococcum
PERCIV., T. aestivum L. ? T. macha DEKAPR. et MENABDE, T. aestivum L. ? T.
petropavlovskyi UDACZ. et MIGUSCH, T. aestivum L. ? T. vavilovii (THUM.)
JAKUBZ.). The 42 common wheat F1 hybrids were tested during two seasons
(2010/11 and 2011/12) on the Selection center Ptuj. The experiment was
carried out in a randomized block design with four replications. The 43
interspecies F1 hybrids were tested on the same location in the season
2011/12 and the experiment was designed as an randomized block with three
replications. The results were analyzed using statistical package AGROBASE
generation II and STATGRAPHICS Centurion XVI. The analysis of variance was
significant for both, GCA and SCA variances (P < 0,01). Generally, SCA
variances were lower than GCA variances. We could state, that the improvement
of heterosis level in the common wheat germplasm through the use of relatives
with the same genome (genome BAD) is possible. As an example we can point out
the interspecies F1 hybrid between common wheat variety Garcia and an
accession of the Triticum sphaerococcum PERCIV. species (accession number
01C0201227).
Effects of hybrid on maize grain and plant carbohydrates
Authors: Radosavljevic Milica , Milasinovic-Seremesic Marija , Terzic Dusanka , Todorovic Goran , Pajic Zorica , Filipovic Milomir , Kaitovic Zeljko , Mladenovic-Drinic Snezana
Published: January 2013

Maize is one of the most important naturally renewable carbohydrate raw
materials. The basic chemical composition (content of starch, protein, oil,
crude fibre and ash) and the content of lignocellulose fibres (content of
NDF, ADF, ADL, hemicelullose and cellulose) were determined for grain and the
whole maize plant of the seven ZP maize hybrids. The negative very
significant correlation between protein and starch content (r=-0.78) and
significant correlation between oil and starch content (r=-0.65) was obtained
in grain. The hybrid ZP 666 had the highest starch, crude fibre, ADF and
cellulose content, high NDF content, the lowest ADL and low protein content
in grain. The lowest starch, crude fibre, ADF, cellulose content and the
highest protein and oil content in grain was determined in hybrid ZP 158. The
hybrid ZP 730 had the highest and hybrid ZP158 the lowest dry matter yield of
whole plant, whole plant without ear, ear and yield of digestible dry matter
of whole plant. The differences in the contents of NDF, ADF, ADL,
hemicelluloses, cellulose and digestibility of the whole maize plant among
observed ZP hybrids were 6.21%, 4.01%, 0.79%, 5.65%, 3.88% and 6.79%,
respectively. Obtained values for the content of lignocellulose fibres
differed significantly among hybrids and were closely related to
digestibility.
Cultural indicators of tourism sustainability in Serbian spas
Authors: Pavlovic Sanja , Belij Marija
Published: January 2013

This paper analyses cultural indicators, one of five groups of comparative
indicators of sustainable tourism, defined and suggested to the European
Commission by a team of experts. The group of cultural indicators includes
indicators such as the ratio of accommodation capacities to the number of
population, and tourism intensity and they show the level of preservation of
local population identity. The statistical data from the last four census
year were used in the analysis of cultural indicators of tourism
sustainability in spa settlements in Serbia. The ratio of accommodation
capacities to the number of local population can be defined as favourable in
most spas (green zone), since there is no intensive tourist construction
(apart from illegal construction), while the tourism intensity based on the
example of Serbian spa settlements points at very unfavourable situation,
since in all four census years the recorded, the results are in the red zone,
i.e. on the one hand, there is a relatively low number of local population
and on the other hand, there is a high number of overnight stays.
Change of sensory characteristics and some quality parameters of mixed milk and cocoa spreads during storage up to 180 days
Authors: Popov-Raljic Jovanka , Lalicic-Petronijevic Jovanka , Dimic Etelka , Popov Vladimir , Vujasinovic Vesna , Blesic Ivana , Portic Milijanko
Published: January 2013

The main role of milk and milk products in the technology of confectionery
products (chocolates, caramele-candy products, dairy products, spreads, etc.)
is to increase the nutritional value of the final product and to influence
some sensory characteristics of quality (appearance, consistence/texture,
flavor). In this study, mixtures of milk and cocoa spreads of a new
composition with increased content of milk components were produced, and then
assessed for sensory quality traits, peroxide value, free fatty acid content
and the content of heavy metals (lead, cadmium and copper) during storage
from 0-30 to 180 days at room temperature (18 - 20?C). The samples were
evaluated using the analytical-descriptive sensory analysis (point system)
with description of the dominant properties (appearance-color, surface gloss,
consistence-spreadability, dynamic property of melting, the consistence in
the oral cavity-oiliness and flavor-odor and taste). The results of sensory
analysis were statistically analyzed using two-way analysis of variance
MANOVA, LSD and Levene's test. Based on the obtained results it can be
concluded that the composition of mixtures of milk and cocoa spreads
significantly affects all characteristics, whereas the storage time
significantly affects the appearance, consistence, i.e. spreadability and
taste of the product.
Nanoemulsions produced with varied type of emulsifier and oil content: An influence of formulation and process parameters on the characteristics and physical stability
Authors: Djordjevic Sanela , Cekic Nebojsa , Isailovic Tanja , Milic Jela , Vuleta Gordana , Lazic Miodrag , Savic Snezana
Published: January 2013

The aim of the present study was to prepare oil-in-water nanoemulsions
stabilized with a novel natural alkyl polyglucoside surfactant and to compare
them with corresponding lecithin/polysorbate 80 - based nanoemulsions in
terms of physicochemical properties and physical stability. Nanoemulsions
were prepared by high pressure homogenization, using 20, 30 and 40% (w/w)
medium chain triglyceride as oil phase, and 4, 6 and 8% (w/w)
lecithin/polysorbate 80 mixture (1/1) or caprylyl/capryl glucoside as
emulsifiers. The influence of emulsifier type, emulsifier concentration and
oil content was investigated with respect to changes in particle size,
particle size distribution, surface charge and physical stability. The
influence of production parameters (number of homogenization cycles, type of
homogenization process, homogenization pressure) on particle size was also
investigated. Analysis was performed by photon correlation spectroscopy,
laser diffraction, zeta potential, pH and electrical conductivity
measurements. All formulations produced revealed a small droplet size ranging
from 147 to 228 nm and a very narrow size distribution (polydispersity index
range 0,072-0,124). Zeta potentials were about -20 mV and -50 mV for
nanoemulsions stabilized with lecithin/polysorbate 80 and caprylyl/capryl
glucoside, respectively. The results obtained during the stability studies (6
months at 25?C and 1 month at 40?C) indicated that nanoemulsion stability was
influenced by their composition. Acquired results also suggested the most
appropriate production parameters: 9 homogenization cycles, homogenization
pressure of 500 bar and discontinuous process of homogenization.
Investigation of some galactic and extragalactic gravitational phenomena
Authors: Jovanovic P.
Published: January 2013

Here we present a short overview of the most important results of our
investigations of the following galactic and extragalactic gravitational
phenomena: supermassive black holes in centers of galaxies and quasars,
supermassive black hole binaries, gravitational lenses and dark matter. For
the purpose of these investigations, we developed a model of a relativistic
accretion disk around a supermassive black hole, based on the ray-tracing
method in the Kerr metric, a model of a bright spot in an accretion disk and
three different models of gravitational microlenses. All these models enabled
us to study physics, spacetime geometry and effects of strong gravity in the
vicinity of supermassive black holes, variability of some active galaxies and
quasars, different effects in the lensed quasars with multiple images, as
well as the dark matter fraction in the Universe. We also found an
observational evidence for the first spectroscopically resolved sub-parsec
orbit of a supermassive black hole binary system in the core of active galaxy
NGC 4151. Besides, we studied applications of one potential alternative to
dark matter in the form of a modified theory of gravity on Galactic scales,
to explain the recently observed orbital precession of some S-stars, which
are orbiting around a massive black hole at the Galactic center.
The intergalactic Newtonian gravitational field and the shell theorem
Authors: Zaninetti L.
Published: January 2013

The release of the 2MASS Redshift Survey (2MRS) with its 44599 galaxies
allows the deduction of their masses in nearly complete sample. A cubic box
with side of 37 Mpc containing 2429 galaxies is extracted and the Newtonian
gravitational field is evaluated both at the center of the box as well as in
101 x 101 x 101 grid points of the box. The obtained results are then
discussed in the light of the shell theorem which states that inside of a
sphere the gravitational field is zero.
Clinical evaluation of Graves ophthalmopathy
Authors: Janicijevic-Petrovic Mirjana , Sarenac Tatjana , Sreckovic Suncica , Janicijevic Katarina , Petrovic Marko , Vulovic Dejan
Published: January 2013

Introduction. Graves ophthalmopathy is an autoimmune disease, which is the
consequence of thyroid dysfunction. Ocular manifestations occur in 50% of
patients with Graves disease. The changes occur due to the inflammatory cell
infiltration of retrobulbar fat tissue and extraocular muscles.
Ultrasonography of eye orbit provides important information about the
condition of retrobulbar adipose tissue and the thickness of extraocular
muscles. Objective. The aim of our study was to show the clinical
significance of orbital ultrasonography in the diagnostics and follow-up of
patients with Graves disease. Methods. The authors examined 154 patients with
Graves ophthalmopathy at the Clinic of Ophthalmology of the Clinical Centre
in Kragujevac during the period 2008?2010. Ophthalmological examination
included visual acuity testing (Snellen chart), biomicroscopy and applanation
tonometry, direct and indirect ophthalmoscopy, dry eye testing and
exophthalmometry (Hertel). Orbital ultrasonography examination and
extraorbital muscle measurement was done by ultrasound B-scan. Results. The
disease was more frequent in women (79.87%) aged from 36?45 years. Most
patients had hyperthyreoidism (54.55%). In relation to the duration of the
disease, the most frequent clinical signs were bilateral ptosis, conjunctival
chemosis and periorbital edema. According to our data the highest number of
patients had enlarged medial straight muscle. Conclusion. Graves
ophthalmopathy is the most frequent sign of thyroid disease. By orbital
ultrasonography we detected extended echogram and measured the thickness of
the extraocular muscle. Computerized tomography and magnetic resonance scan
were utilized for cases of insufficiently manifested clinical signs of the
disease. The advantages of ultrasonography lie in easy handling, patients?
comfort, short time of examination and possibilities of repetition.
The effects of orthognathic surgery on mandibular movements in patients with mandibular prognathism
Authors: Sinobad Vladimir , Dodic Slobodan , Strajnic Ljiljana , Vukadinovic Miroslav
Published: January 2013

Introduction. Mandibular prognathism, one of the most severe dentofacial
deformities, affects the person?s appearance, psychological health and the
quality of life in the most sensitive age period. Objective. The aim of this
study was to evaluate the effects of sagittal split ramus osteotomy on the
range of mandibular border movements in the early postoperative period.
Methods. The study was conducted on 20 patients, of mean age 20.8 years, with
mandibular prognathism. All patients included in this study were operated on
by bilateral sagittal spliting ramus osteotomy according to Obwegeser and Dal
Pont followed by mandibular immobilization during eight weeks. In all
patients mandibular border movements were recorded before and six months
after surgery using the computerized pantograph Arcus-Digma (KaVo EWL GmbH,
Leutkirch, Germany). Results. The analysis of the chosen kinematic parameters
revealed that sagittal split ramus osteotomy followed by eight weeks of
mandibular immobilization had severe effects on the mouth opening. Six months
after surgery the range of maximal mouth opening decreased for approximately
13.9 mm in relation to the preoperative stage. On the contrary, the ranges of
maximal protrusion and the border of laterotrusive excursions increased
significantly after surgery. Conclusion. In patients with mandibular
prognathism where enormous mandibular growth was the main causal factor of
the deformity, the sagittal split ramus osteotomy yielded good results. The
rigid fixation of bone fragments and reduced period of mandibular
immobilization followed by appropriate physical therapy could considerably
contribute to a more rapid recovery of mandibular kinematics in the
postoperative period.
Short QT interval is unreliable marker of anabolic androgenic steroid abuse in competitive athletes
Authors: Djordjevic Vitomir , Stankovic Ivan , Stipac Vlahovic , Putnikovic Biljana , Neskovic Aleksandar
Published: January 2013

Introduction. Previous animal and human studies provided the evidence that
testosterone may affect ventricular repolarization by shortening of the QT
interval. Synthetic derivatives of testosterone, modified to enhance its
anabolic properties, are occasionally abused by some competitive athletes.
Objective. We assessed whether the QT interval duration could discriminate
androgenic anabolic steroids (AAS)-using strength athletes (SA) from
drug-free endurance athletes (EA), by comparing 25 formulas for QT interval
correction. Methods. We recruited 22 elite male athletes involved in
long-term strength or endurance training and 20 sedentary controls. All elite
Vesicovaginal fistulas: Results of surgical treatment during ten years
Authors: Radovanovic Milan , Dzamic Zoran , Vuksanovic Aleksandar , Pejcic Tomislav , Nikic Predrag
Published: January 2013

Introduction. Vesicovaginal fistulas (VVF) are the most common and the most
frequent type of urogenital fistulas. They may have a different etiology. In
most cases, surgery is required for treatment. Objective. The aim of the
study was to analyze the results of surgical therapy of VVF in a tertiary
level institution over the last decade. Methods. The retrospective study of
results was conducted involving a total number of 99 women who were
surgically treated for VVF at the Clinic of Urology of the Clinical Center of
Serbia in Belgrade in the period from 2001?2010. Results. Over the past ten
years VVF occurred after hysterectomy in 74.7% of cases, and almost twice
more frequently after hysterectomy for a benign gynecological disease. In the
surgical treatment of primary VVF transvesical approach was used in 53.53%
(52/99) of cases. Relapses were treated surgically using transperitoneal
approach in all cases. No significant difference was found in respect to the
applied approach in the surgical treatment of primary fistulas. In even 94%
(93/99) of cases the problem of VVF was solved by a single surgical
intervention only. In total, in 107 interventions 8 (7.4%) relapses were
recorded. Conclusion. The study showed that VVF occurred after hysterectomy
in three quarters of cases, more frequently after hysterectomy due to a
benign gynecological disease. Early detection with timely and appropriate
treatment of gynecological diseases will reduce the number of conditions that
may lead to VVF. Surgical treatment of VVF yielded satisfactory results; it
was shown that even in 94% of cases the problem of VVF was solved by a single
surgical intervention only, however further improvement is certainly
necessary.
Mystery called sarcoidosis: Forty-four years follow-up of chronic systemic disease
Authors: Skodric-Trifunovic Vesna , Vucinic Violeta , Simic-Ogrizovic Sanja , Stevic Ruza , Stjepanovic Mihailo , Ilic Katarina , Savic Zivorad
Published: January 2013

Introduction. This is a presentation of a 61-year-old female patient. Since
44 years have passed from the onset of her first symptoms until the final
diagnosis of sarcoidosis, this was the reason of our decision to publish the
case. Case Outline. During the follow-up period of 44 years the patient had
ocassional polymorphic complains, such as adynamia, nausea, abdominal pains,
myalgia, arthralgia, body weight loss (8-10 kg) etc. The clinical course was
predominated by splenomegaly, hepatitis and arthralgia, and later chronic
renal failure also developed. Laboratory findings showed elevated markers of
acute inflammation and autoantibodies. The patient was hospitalized in
different university internal hospitals (gastroenterology, allergology,
rheumatology, nephrology and pulmology). Liver biopsy was performed three
times, rectum and kidney biopsy once each and finally bronchoscopy and
pulmonary biopsy was done. At last, about 40 years from the onset of the
first symptoms, in 2006 the diagnosis of lung sarcoidosis was established.
Conclusion. The final diagnosis of spleen sarcoidosis was confirmed by
pathologically verified sarcoidosis of the lungs. This case is particularly
interesting because of the presence of familial sarcoidosis (the patient?s
son also had recurrent pulmonary sarcoidosis).
PFA-100 test in the detection of platelet dysfunction and monitoring DDAVP in a patient with liver cirrhosis undergoing inguinal hernia repair
Authors: Vucelic Dragica , Golubovic Milka , Bjelovic Milos
Published: January 2013

Introduction. Hemostatic abnormalities in liver cirrhosis are complex and
multifactorial and may predispose to prolonged hemorrhage following invasive
procedures. Due to increased perioperative bleeding risks, patients with
cirrhosis should undergo elective surgery after making medical preparations.
It has been shown that 1-deamino-8-D-arginine vasopressin (DDAVP),
desmopressin, can be used as a safe and effective remedy in preventing and
treating bleeding in cirrhotics. However, there is still scarce information
of adequate test(s) for assessing effects of DDAVP in platelet dysfunction.
The use of platelet function analyzer-100 (PFA-100) allows more reliable
assessment of impaired primary hemostasis as well as follow-up of hemostatic
changes induced by DDAVP effects. Case Outline. In a 49-year-old male with
ethylic liver cirrhosis and prolonged bleeding time scheduled for elective
left side inguinal hernia repair, we carried out PFA-100 testing to
investigate the patient?s platelet functional status. Results were
affirmative for the presence of platelet functional problems. By standard
coagulation tests the patient was also identified as having secondary
hemostasis. Preoperatively, PFA-100 was used to test the patient?s response
to a standard dose of DDAVP, which was favorable. The patient was operated
after medical preparations with DDAVP and vitamin K. Neither bleeding
complications nor side effects of DDAVP were recorded in the perioperative
period. Conclusion. The PFA-100 is a simple and reliable test for the
assessment of primary hemostasis as well as in monitoring of DDAVP therapy.
Review on fiber morphology obtained by bubble electrospinning and blown bubble spinning
Authors: He Ji-Huan , Kong Hai-Yan , Yang Rui-Rui , Dou Hao , Faraz Naeem , Wang Liang , Feng Chao
Published: January 2013

Here we show an intriguing phenomenon in the bubble electrospinning process
that the ruptured film might be stripped upwards by an electronic force to
form a very thin and long plate-like strip, which might been received in the
metal receiver as discontinuous backbone-like wrinkled materials, rather than
smooth nano-fibers or microspheres. The processes are called the bubble
electrospinning. The electronic force can be replaced by a blowing air, and
the process is called as the blown bubble spinning. We demonstrate that the
size and thickness of the ruptured film are the crucial parameters that are
necessary to understand the various observations including beads and
nanoporous materials. We identify the conditions required for a ruptured film
to form discontinuous structure, and a critical width of the ruptured film to
form a cylindrical fiber, above which a long and thin plate-like strip might
be obtained, and a criterion for oscillatory jet diameter, which leads to
bead morphology of the obtained fibers. The space of the adjacent beads
depends on the fiber size. We anticipate our assay to be a starting point for
more sophisticated study of the bubble electrospinning and the blown bubble
spinning and for mass-production of both nanofibers and nanoscale
discontinuous materials.
Evaluation of natural convection flow of a nanofluid over a linearly stretching sheet in the presence of magnetic field by the differential transformation method
Authors: Yahyazadeh Hossein , Ganji Domairry , Yahyazadeh Arash , Khalili Taghi , Jalili Payam , Jouya Mohsen
Published: January 2013

In the present study, the convective flow and heat transfer of an
incompressible viscous nanofluid past a semi-infinite vertical stretching
sheet in the presence of a magnetic field are investigated. The governing
partial differential equations with the auxiliary conditions are reduced to
ordinary differential equations with the appropriate corresponding conditions
via scaling transformations. The semi-analytical solutions of the resulting
ordinary differential equations are obtained using differential
transformation method coupled with Pade approximation. Comparison with
published results is presented which reveals that the applied method is
sufficiently accurate for engineering applications.
Evaluation of electro-osmotic flow in a nanochannel via semi-analytical method
Authors: Jalili Payam , Ganji Domairry , Jalili Bahram , Ganji Domiri
Published: January 2013

In this paper, equations due to anion and cation distributions, electrical
potential and shear stress profiles in a nanochannel are formed for 1-D
electro-osmotic flow, and solved by homotopy perturbation method. Results are
compared with numerical solutions.
Numerical approach to Stefan problem in a two-region and limited space
Authors: Wu Zhao-Chun , Wang Qing-Cheng
Published: January 2013

In the paper, an effective numerical scheme for two-region and limited space
Stefan problem is presented. The main feature of this method is to search
for its solution and the temperature field simultaneously. The comparison
of the obtained results with approximate analytical solutions shows that the
algorithm is feasible and effective.
Monte Carlo simulation of a two-phase flow in an unsaturated porous media
Authors: Xu Peng , Yu Ming-Zhou , Qiu Shu-Xia , Yu Bo-Ming
Published: January 2013

Relative permeability is a significant transport property which describes the
simultaneous flow of immiscible fluids in porous media. A pore-scale physical
model is developed for the two-phase immiscible flow in an unsaturated porous
media according to the statistically fractal scaling laws of natural porous
media, and a predictive calculation of two-phase relative permeability is
presented by Monte Carlo simulation. The tortuosity is introduced to
characterize the highly irregular and convoluted property of capillary
pathways for fluid flow through a porous medium. The computed relative
permeabilities are compared with empirical formulas and experimental
measurements to validate the current model. The effect of fractal dimensions
and saturation on the relative permeabilities is also discussed
Characteristic distribution of submicron and nano-particles laden flow around circular cylinder
Authors: Tu Cheng-Xu , Zhang Jian
Published: January 2013

Multiphase flow, including submicron and nano-particles simultaneously,
around circular cylinder is studied experimentally in this paper, with
Reynolds number in the range of 5200 to 35000. The results show that as Re
increasing, flow characteristics hardly influence particles larger than 60.4
nm. For Re = 9000 and 16000, despite of the particles deposition, the
concentration of bigger particles ranged from 220.7 nm to 523.3 nm in the
wake is obviously higher than that at the free stream, whereas both is close
to each other for smaller particles.
Influence on droplet formation in the presence of nanoparticles in a microfluidic T-junction
Authors: Wang Rui-Jin , Li Zhi-Hua
Published: January 2013

The droplet formation in the presence of nanoparticles was studied in a
T-shaped microfluidic device numerically. Nanoparticles in continuous phase
did not influence droplet formation dynamics obviously. Contrarily, the
presence of nanoparticles in dispersed phase will influence evidently droplet
formation dynamics, the possible reason is that the accumulation of
nanoparticles at the liquid-liquid interface would cause the variation of
interfacial tension and the anisotropy of nanoparticles? movement at
interface. Discussions on microscopic mechanism of droplet formation in the
presence of nanoparticles were carried out.
Modeling and control of temperature of heat-calibration wind tunnel
Authors: Li Yunhua , Teng Fengjian , Cai Chaozhi
Published: January 2013

This paper investigates the temperature control of the heat air-flow wind
tunnel for sensor temperature-calibration and heat strength experiment.
Firstly, a mathematical model was established to describe the dynamic
characteristics of the fuel supplying system based on a variable frequency
driving pump. Then, based on the classical cascade control, an improved
control law with the Smith predictive estimate and the fuzzy
proportional-integral-derivative was proposed. The simulation result shows
that the control effect of the proposed control strategy is better than the
ordinary proportional-integral-derivative cascade control strategy.
Eulerian-Lagrangian simulation of a bubbling fluidized bed reactor: Assessment of drag force correlations
Authors: Ku Xiao-Ke , Li Tian , Lovas Terese
Published: January 2013

An Eulerian-Lagrangian approach is developed within the OpenFOAM framework to
investigate the effects of three well-known inter-phase drag force
correlations on the fluidization behavior in a bubbling fluidized bed
reactor. The results show a strong dependency on the restitution coefficient
and the friction coefficient and no occurrence of bubbling and slugging for
the ideal-collision case. The mean pressure drops predicted by the three
models agree quite well with each other.
Non-isothermal crystallization behavior of biodegradable poly(butylene succinate-co-terephthalate) (PBST) copolyesters
Authors: Zhang Jie , Li Fa-Xue , Yu Jiang-Yong
Published: January 2013

Non-isothermal crystallization and subsequent melting of biodegradable
poly(bu-tylene succinate-co-terephthalate) copolyesters with different
butylene terephtha-late contents were investigated by differential scanning
calorimetry measurements. Differential scanning calorimetry crystallization
curves revealed that butylene terephthalate contents of poly(butylene
succinate-co-terephthalate) copolyesters had an identical effects on the
onset, peak and final crystallization temperatures. Subsequent differential
scanning calorimetry melting curves implied that both PBST-10 and PBST-70
copolyesters had the narrow distribution of lamellar thickness, while the
PBST-50 copolyester showed much wider distribution.
Thermodynamic and kinetics studies of the adsorption of phosphorus by bioretention media
Authors: Mei Ying , Yang Xiao-Hua , Guo Ya-Nan , He Jun , Jiang Rong , Li Yu-Qi , Li Jian-Qiang
Published: January 2013

The objective of this study is to explore the mechanism of phosphorus
adsorption in the bioretention media. The phosphorus adsorption
characteristics of four media of bioretention are studied by four isothermal
adsorption experiments. The result indicate that the maximal adsorption
capacity (qm) of phosphorus of the four bioretention media are found to be
media I (0.3365 mg/g), media II (0.3302 mg/g), media III (0.2751 mg/g) and
media IV 0.8435 mg/g), respectively. The negative values of Gibbs free energy
of phosphorus indicate that each of the phosphorus adsorption process by the
four bioretention media is a spontaneous process. The mean sorption energies
obtained from DR isotherm were 0.0758, 0.0772, 0.0803 and 0.0632 kJ/mol
respectively, which indicate the physical nature of the adsorbate/adsorbent
interactions. Two kinetic models including pseudo first-order and pseudo
second-order equation were selected to follow the adsorption process. The
results showed that the adsorption of phosphorus with the four types of
bioretention media could be described by the pseudo second-order equation.
The media IV was the better media of bioretention with high phosphorus
removal capacity.
Insights into high temperature pretreatment on cellulase processing of bamboo
Authors: Fu Li-Na , Tan Mei-Ying , Shi Ru-Kun , Wang Hong-Bo , Fu Jia-Jia
Published: January 2013

Bamboo processing was performed with commercial cellulase. The properties of
cellulase and the effect of high temperature pretreatment on cellulase
hydrolysis of bamboo were investigated. Results indicated that cellulase
hydrolysis performed fast and dramatically within 30 minutes, and then
gradually reached its balance. It was found that pretreatment played an
active role in cellulase processing, which enhanced the saccharification of
bamboo and benefited high-molecular-weight lignin degradation and removal.
Additionally, a better performance of bamboo processing was achieved under
the cellulase concentration of 15IU in total reaction system of 100 ml at
50?C, pH 4.8, together with the high temperature pretreatment of 120?C for 15
minutes.
Modified frequency computation method for optimal environmental flows
Authors: Dong Zhen-Hui , Yang Xiao-Hua , Guo Ya-Nan , Mei Ying , Li Yu-Qi , Li Jian-Qiang
Published: January 2013

The paper describes a modified frequency computation method to calculate the
optimal environmental flows. This method was used to design monthly
environmental flows in Lancang river. The environmental flows calculated by
the method are compared with those by the ecological flow method and the
Tennant method, revealing its effectiveness.
Particle deposition characteristics in entrained flow coal gasifier
Authors: Liu Sheng , Hao Ying-Li
Published: January 2013

Cold state experiment and numerical simulation are carried out to study
particle deposition process. The deposit mass can be divided into two parts,
one directly collides with the wall and the other is brought by the backflow.
The deposit flux increases with the increase of gas flow rate or water flow
rate or both, and decreases with the increase of the central channel gas flow
rate.