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Winter wheat mixtures influence grain rheological and Mixolab quality
No full textThis study aims to investigate
the effect of a mixture of winter wheat
varieties on grain rheological characteristics
and the quality of wheat flour analyzed by
Mixolab. In the 2019-2020 growing season,
a small plots experiment was carried out in
an organically certified field in the Czech
Republic. The experiment was conducted by
randomized complete block design with
three replicates, four winter wheat (Triticum
aestivum L.) varieties with four mixtures of
the same varieties in equal proportions.
Based on the results, the expected grain yield
was not achieved. The quality of wheat
productivity was significantly different
among treatments in terms of protein
content, wet gluten, sedimentation value, and
falling number (P < 0.001). Protein content
ranged between 8.04% and 9.85%, mixtures
of Butterfly + Lorien and Illusion + Lorien
were higher in protein than Illusion and
Vanessa varieties and their combination. The
highest wet gluten was found under mixtures
of Butterfly + Lorien varieties (19.34%)
while sowing Butterfly variety gave the
highest Zeleny test and falling number
compared to other treatments. Butterfly +
Lorien and Butterfly + Vanessa mixtures
obtained good results for falling number at
250.67 and 272.67 seconds. There were
significant differences in rheological quality
parameters of winter wheat varieties
analyzed by Mixolab including stability,
weakening of protein, and starch (P < 0.01
and P < 0.001, except slope gamma).
Although the observed benefits were limited
to grain yield, mixtures of individual
cultivars appear to be a potential tool to
improve overall crop performance (grain
quality)
Combining ability of waterlogging tolerance in wheat (Triticum aestivum L.)
No full textThe mean performance and combining abilities of cross combinations derived from a complete diallel mating and their parents were evaluated under waterlogging conditions. Analysis of variance for combining abilities indicated significant GCA (general combining ability) and SCA (specific combining ability) for single spike yield, SPAD (soil plant analysis development) and leaf area; GCA for NDVI (normalised differences vegetation index) and SCA for Fe and Mn contents in roots and membrane thermal stability. The parents Stendal, Beşköprü and Pamukova 97 were the best combiners in terms of waterlogging tolerance, while Beşköprü × Pamukova 97, Pamukova 97 × Beşköprü, Stendal × Pamukova 97, Stendal × Beşköprü and Beşköprü × Hanlı were identified as the best cross combinations, with high positive specific combining ability effects for most waterlogging related characters
Analysis of spermatozoa quality using Percoll density gradient centrifugation through the administration of phospholipid + EGTA
No full textThe Percoll density gradient
centrifugation (PDGC) method is frequently
used in the sexing of spermatozoa. However,
this method causes damage to the spermatozoa
membranes, resulting in a decreased quality
of spermatozoa. We analysed the impacts of
phospholipid PC (phosphatidylcholine) and
EGTA (ethylene glycol bis (β-aminoethyl
ether) N,N,N',N'-tetraacetic acid) Ca2+ free
buffer on the quality of bovine spermatozoa
after the PDGC process, using semen from
Friesian Holstein (FH) bulls aged 5 - 8 years.
The following variables were observed:
spermatozoa motility, spermatozoa viability,
spermatozoa membrane integrity, spermatozoa
that have not experienced capacitation,
spermatozoa that have experienced
capacitation and spermatozoa that have
undergone acrosomal reaction. The results
showed that the administration of
phospholipid PC + EGTA Ca2+ free buffer to
spermatozoa, followed by the PDGC process,
could maintain or further improve the values
of all variables. In the PDGC process,
phospholipid PC 10% + EGTA Ca2+ free
buffer at 1 mM was most suitable
Examples of good practices for developing academic integrity
No full textThe university represents a space of values and, on this basis, it becomes a creator of culture, innovation and
civilization. That is why academic integrity has become a defining feature of university activity. Academic integrity
considers the behavior of teaching staff, students and the entire academic community under the sign of: honesty, trust,
fairness, respect and responsibility (TEQSA, 2022, https://www.teqsa.gov.au/what-academic-integrity, accessed on
20.09.2022). Donald McCabe (1944-2016) is considered the "father" of research in this field. Important contributions to
this issue were made by: Tracey Bretag (Australia), Cath Ellis (Australia), Sarah Elaine Eaton (Canada), Thomas
Lancaster (Great Britain), Tomáš Foltýnek (Czech Republic) and Tricia Bertram Gallant (USA). Our communication
aims to present some examples of international good practices regarding the promotion of academic integrity (Stanford,
Oxford, Yale, Berkeley, MIT, Great Britain, Australia), which can also be used in the Romanian university
environment. The approach we propose is a systemic, integrative and proactive one, to initiate the main actors of the
university environment in the methodology of scientific research
Romanian meat market: social media marketing efforts and results
No full textAs the Romanian meat market expands, producers need to find new promotional tools. In recent years, more and more
companies have an increasingly significant presence on social media. The aim of this paper is to correlate the type of
message conveyed by the brand on social media with audience interaction. Five companies operating in this field were
included in the study, analyzing the messages they send via social networks. Thus, a set of variables was established in
order to analyze the correlation between messages and impact. In this respect, we have identified keywords related to the
taste and the naturalness of the products. The study revealed that posts that ask for public interaction have a high impact.
The results of the study show a high correlation between posts highlighting taste and naturalness qualities and the feedback
received
Recent advances in removal of Congo Red dye by adsorption using an industrial waste
Get PDFThe Congo Red dye was removed from a simulated textile wastewater solution using fly ash from a
local power plant. The characterisation of fly ash was studied in detail by SEM, EDX, XRD, FTIR, BET
surface area and TGA techniques. The influence of four parameters (contact time, initial concentration,
adsorbent dose, and temperature) was analysed, the results showing that the adsorption capacity
depends on these parameters. Thermodynamic and regeneration investigations as well are presented.
The fit to pseudo-second-order kinetics models suggests that the removal process is a chemical
adsorption. The Langmuir model fitted the experimental data, with a maximum adsorption capacity
of 22.12 mg/g. The research is a preliminary case study that highlights that fly ash posed a very good
potential as a material for Congo Red dye removal
Environmental and bioclimatic factors influencing yeasts and molds distribution along European shores
No full textThe present study employed data collected during the Mycosands survey to investigate the environmental factors influencing yeasts and molds distribution along European shores applying a species distribution modelling approach. Occurrence data were compared to climatic datasets (temperature, precipitation, and solar radiation), soil datasets (chemical and physical properties), and water datasets (temperature, salinity, and chlorophyll-a concentration) downloaded from web databases. Analyses were performed by MaxEnt software.
Results suggested a different probability of distribution of yeasts and molds along European shores. Yeasts seem to tolerate low temperatures better during winter than molds and this reflects a higher suitability for the Northern European coasts. This difference is more evident considering suitability in waters. Both distributions of molds and yeasts are influenced by basic soil pH, probably because acidic soils are more favorable to bacterial growth. Soils with high nitrogen concentrations are not suitable for fungal growth, which, in contrast, are optimal for plant growth, favored by this environment. Finally, molds show affinity with soil rich in nickel and yeasts with soils rich in cadmium resulting in a distribution mainly at the mouths of European rivers or lagoons, where these metals accumulate in river sediments
Sensory characterisation of sheep pastrami produced with different technological parameters
Get PDFSensory attributes (appearance, aroma, smell, taste, and texture) are the most accessible tools that determine consumer
acceptance and the decision to buy certain meat or meat products. When buying, the consumer's first impression is
based on the appearance and color of the food and then the smell. Finally, during the chewing process, they check the
texture, taste, and flavor, which together determine the final impression of the product. The aim of the study was to
produce and sensory evaluate three batches of sheep pastrami in which the maturation process was carried out
differentially (for 6, 12, and 19 days), with the tenderness being adjusted by adding a tenderizing agent. As regards the
sensory acceptability test, the samples received average scores between 6.40 and 7.64 for the attributes evaluated, with
Lexp 3 being the one with the highest scores. In terms of CATA analysis, the sample that was described as closest to the
ideal was Lexp3, the 6-day matured sample, which contained the highest amount of tender, with Lexp2 being very
close. In the case of Lexp1, some evaluators identified a slightly rancid aroma and a more pronounced hardness, as it
was subjected to the longest maturation period (19 days)
Evaluation of the adsorptive performances of rapeseed waste in the removal of toxic metal ions in aqueous media
Get PDFRapeseed seeds are one of the most important categories of raw materials used to obtain
biofuels. However, the biomass resulting after oil extraction is still considered waste, for which
valorization solutions are sought. In this study, we propose the use of this type of residual biomass
(rapeseed waste biomass (RWB)) as a biosorbent for the removal of toxic metal ions from aqueous
media. Two toxic metal ions were selected for the experimental studies, namely: Pb(II) and Hg(II).
The optimal biosorption conditions, for both metal ions, were selected based on response surface
methodology and were verified experimentally in batch systems. More than 92% of the initial amount
of Pb(II) and Hg(II) are retained under the following conditions: pH = 6.5 for Pb(II) and 4.0 for Hg(II);
biosorbent dosage = 4.0 g/L; contact time = 3 h; temperature = 25 1 C. Isotherm (Langmuir, Freundlich
and Temkin models) and kinetic (pseudo-first order, pseudo-second order and intra-particle
diffusion models) modelling of the experimental data were used for the quantitative evaluation of
both biosorption processes. Although the Langmuir maximum biosorption capacities are different
(higher in the case of Pb(II) (61.97 mg/g) than in the case of Hg(II) (51.32 mg/g)), the pseudo-second
order kinetic constants have the same order of magnitude. This shows that the retention of both
metal ions involves similar elementary steps and that RWB behaves as a typical biosorbent. These
characteristics, together with the very good desorption behavior, provide a complete picture of the
possible applications of this waste in environmental decontamination processes
Pulsed laser ablation: a facile and low-temperature fabrication of highly oriented n-type zinc oxide thin films
Get PDFEco-friendly and facile zinc oxide (ZnO) synthesis of zinc-oxide-based nanomaterials with
specific properties is a great challenge due to its excellent industrial applications in the field of
semiconductors and solar cells. In this paper, we report the production of zinc oxide thin films at
relatively low deposition temperature employing a simple and non-toxic method at low substrate
temperature: pulsed laser ablation, as a first step for developing a n-ZnO/p-Si heterojunction. Singlephase
n-type zinc oxide thin films are confirmed by an X-ray diffraction (XRD) pattern revealed by the
maximum diffraction intensity from the (002) plane. Absorbance measurements indicate an increase
in the band gap energy close to the bulk ZnO. A 350 degree C substrate temperature led to obtaining a
highly porous film with high crystallinity and high bandgap, showing good premises for further
applications