733 research outputs found
Modifications of physical properties of coconut oil and anhydrous milk fat as a result of blending
The role of fats in food technology is mainly to develop the desired consistency. The simplest way to reach this goal is the blending of different fats. The aim of our work was to study the solidification and melting properties of blends of coconut oil and anhydrous milk fat. Pure fats and their 25–75%, 50–50%, and 75–25% blends were investigated. Melting profile and isotherm crystallization were measured by pNMR. Non-isotherm melting and solidification were detected by differential scanning calorimetry (DSC). Possible applications of the blends were established. Results show that AMF and coconut oil has limited miscibility, which is dependent on the temperature. Below 22 °C AMF is the softening component, above 22 °C the effect is inverse. Coconut oil accelerates solidification of AMF, however, basic crystal forms of AMF remained
Comparison of soil erosion dynamics under extensive and intensive cultivation based on basic soil parameters
The conservation of soil and its elemental feature, t
he soil fertility has not just national and
agricultural business interest, since the fertile soil is
an elemental part of the material turnover in the
environment. The soil erosion can reach huge spatial e
xtensions and starts with the most valuable part: the
upper, fertile layer. So, its research is crucial for
our future survival. Our studied area can be found
in
Gerézdpuszta at the Koppány
-valley of Hungary, which is a sensitive erosion area.
We sampled the upper 30
cm of soil layer in every 10 meters that resulted 32-32
point samples on the arable and on the grassland,
respectively. One sample was taken under the forest as r
eference. We analyzed the basic soil parameters:
CaCO
3
, pH, AL-P
2
O
5
, AL-K
2
O, Kuron’s higroscopicity, SOM and the particle size di
stribution was
determined. Besides, we examined the connection between
the given results from laboratory soil analyses and
the Munsell-type and Google Earth satellite image colors. O
ur results show the erosion dynamic on our
sample slope, and the main differences in basic soil paramet
ers between different intensities. The main
indicator of soil erosion dynamic were the CaCO
3
, the SOM, AL-P
2
O
5
and the particle size distribution,
where the SOM and CaCO
3
were correlate with the Munsell and Google Earth col
or also
Review of group A rotavirus strains reported in swine and cattle
Group A rotavirus (RVA) infections cause severe economic losses in intensively reared livestock animals, particularly in herds of swine and cattle. RVA strains are antigenically heterogeneous, and are classified in multiple G and P types defined by the two outer
capsid proteins, VP7 and VP4, respectively. This study summarizes published literature on the genetic and antigenic diversity of porcine and bovine RVA strains published over
the last 3 decades. The single most prevalent genotype combination among porcine RVA strains was G5P[7], whereas the predominant genotype combination among bovine RVA strains was G6P[5], although spatiotemporal differences in RVA strain distribution were observed. These data provide important baseline data on epidemiologically important RVA strains in swine and cattle and may guide the development of more effective vaccines for veterinary use
The effects of ozone on immune function.
A review of the literature reveals that ozone (O3) exposure can either suppress or enhance immune responsiveness. These disparate effects elicited by O3 exposure depend, in large part, on the experimental design used, the immune parameters examined as well as the animal species studied. Despite the apparent contradictions, a general pattern of response to O3 exposure can be recognized. Most studies indicate that continuous O3 exposure leads to an early (days 0-3) impairment of immune responsiveness followed, with continued exposures, by a form of adaptation to O3 that results in a re-establishment of the immune response. The effects of O3 exposure on the response to antigenic stimulation also depend on the time at which O3 exposure occurred. Whereas O3 exposure prior to immunization is without effect on the response to antigen, O3 exposure subsequent to immunization suppresses the response to antigen. Although most studies have focused on immune responses in the lung, numerous investigators have provided functional and anatomical evidence to support the hypothesis that O3 exposure can have profound effects on systemic immunity
Perioperative Course and Socioeconomic Status Predict Long-Term Neurodevelopment Better Than Perioperative Conventional Neuroimaging in Children with Congenital Heart Disease.
The objective of the study was to compare the use of neonatal conventional brain magnetic resonance imaging (MRI) with that of clinical factors and socioeconomic status (SES) to predict long-term neurodevelopment in children with severe congenital heart disease (CHD).
In this prospective cohort study, perioperative MRIs were acquired in 57 term-born infants with CHD undergoing cardiopulmonary bypass surgery during their first year of life. Total brain volume (TBV) was measured using an automated method. Brain injury severity (BIS) was assessed by an established scoring system. The neurodevelopmental outcome was assessed at 6 years using standardized test batteries. A multiple linear regression model was used for cognitive and motor outcomes with postoperative TBV, perioperative BIS, CHD complexity, length of hospital stay, and SES as covariates.
CHD diagnoses included univentricular heart defect (n = 15), transposition of the great arteries (n = 33), and acyanotic CHD (n = 9). Perioperative moderate-to-severe brain injury was detected in 15 (26%) patients. The total IQ was similar to test norms (P = .11), whereas the total motor score (P < .001) was lower. Neither postoperative TBV nor perioperative BIS predicted the total IQ, but SES (P < .001) and longer hospital stay (P = .004) did. No factor predicted the motor outcome.
Although the predictive value of neonatal conventional MRIs for long-term neurodevelopment is low, duration of hospital stay and SES better predict the outcome in this CHD sample. These findings should be considered in initiating early therapeutic support
Regulation of cluster compactness and resistance to Botrytis cinerea with β-aminobutyric acid treatment in field-grown grapevine
Our paper offers unique information regarding the effects of DL-β-amino-n-butyric acid (BABA) on grape cluster compactness and Botrytis bunch rot development. The impact of treatment was investigated on a native Hungarian grapevine cultivar, Királyleányka (Vitis vinifera L.) during four seasons. The cultivar with dense clusters and with thin skinned berries provided excellent samples for bunch rot studies. In addition, the female sterility effect of BABA in grapevine flowers was examined, which may contribute to looser clusters. Cluster compactness was characterized with two different indexes, bunch rot incidence was assessed in percentages. Ovaries of flowers were examined under epifluorescent microscope. The applied treatments significantly influenced cluster indexes. Bunch rot incidence, however, was highly influenced by the precipitation during ripening. In years 2011 and 2013 reduced bunch rot was detected, while the extremity of rain in 2012 and 2014, resulted in no epidemic or high infection, respectively. Microscopic studies proved that successful treatments on cluster structure can be traced back to the female sterility caused by BABA. Our results presented clear evidence for the effectiveness of BABA treatment on Botrytis bunch rot by promoting looser clusters
Thermal and catalytic decomposition studies of microalgal residue using pyrolysis-GC/MS and TG/MS
The marine algal biomass is one of the most promising candidates for the raw material of sustainable biofuel production. Biofuels of different phases can be converted by bio- or thermochemical methods. In this study thermogravimetry/mass spectrometry (TG/MS) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) were used to analyze the main decomposition products of the deoiled algal cake (DAC). Two mesoporous silica catalysts (SBA-15 and FSM-16) were applied to modify the composition of the evolving gas phase products. The yield of the evolving volatile gas products was enhanced by the use of the SBA-15. This catalyst promoted the decomposition of the inorganic carbonates into carbon dioxide. The formation of hydrocarbons during the fast pyrolysis simple alcohol molecules were formed from the deoiled algal residue. The yields of the anhydro-sugar derivatives were strongly affected by the presence of both catalysts. The intensity of the aromatic and aliphatic decomposition products were influenced by the catalytic decomposition procedure
Bioink properties before, during and after 3D bioprinting
Bioprinting is a process based on additive manufacturing from materials containing living cells. These materials, often referred to as bioink, are based on cytocompatible hydrogel precursor formulations, which gel in a manner compatible with different bioprinting approaches. The bioink properties before, during and after gelation are essential for its printability, comprising such features as achievable structural resolution, shape fidelity and cell survival. However, it is the final properties of the matured bioprinted tissue construct that are crucial for the end application. During tissue formation these properties are influenced by the amount of cells present in the construct, their proliferation, migration and interaction with the material. A calibrated computational framework is able to predict the tissue development and maturation and to optimize the bioprinting input parameters such as the starting material, the initial cell loading and the construct geometry. In this contribution relevant bioink properties are reviewed and discussed on the example of most popular bioprinting approaches. The effect of cells on hydrogel processing and vice versa is highlighted. Furthermore, numerical approaches were reviewed and implemented for depicting the cellular mechanics within the hydrogel as well as for prediction of mechanical properties to achieve the desired hydrogel construct considering cell density, distribution and material-cell interaction
Organic and mineral fertilizer effects on the yield and mineral contents of carrot (Daucus carota)
A greenhouse pot experiment was conducted to investigate the effects of ammonium-nitrate, food waste compost, bacterialfertilizer (EM-1) and their combinations on production and nutrient contents of carrot. The study was conducted on a calcareous chernozemand acidic sandy soils in a randomized complete block design with 8 treatments and four replications. NH4NO3 in chernozem soil increasedthe weight of carrot leaves only, while in sandy soil resulted in reduced yield and highly increased NO3-N content of roots. Sandy soil showedhigher response of biomass production to food waste compost application than chernozem soil. The highest carotenoid content of roots wasmeasured with compost treatment. Combined application of compost and NH4NO3 in chernozem proved to be good combination but in sandysoil have turn out to be less favourable than sole compost treatment. Bacterial fertilizer (EM-1) did not cause marked effect on the yieldparameters, but caused increased phosphorus content of plant. In chernozem soil the maximum yield parameters were achieved with thecombined treatment of ammonium-nitrate+compost+EM-1. In sandy soil the most favourable treatment proved to be the compost treatment.Results suggest that application of food waste compost as a nutrient source could be a promising agrochemical practice especially in soilshaving low organic material and low nutrient supply
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