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Abstract

A number of inorganic compounds, including anions such as nitrate(V), chlorate(VII), bromate (V),

arsenate(III) and (V), borate and fluoride as well as metals forming anions under certain conditions, have been

found in potentially harmful concentrations in numerous water sources. The maximum allowed levels of these

compounds in drinking water set by the WHO and a number of countries are very low (in the range of µg/l to a

few mg/l), thus the majority of them can be referred to as charged micropollutants. Several common treatment

technologies which are nowadays used for removal of inorganic contaminants from natural water supplies, represent serious exploitation problems. Membrane processes such as reverse osmosis (RO), nanofiltration (NF),

ultrafiltration (UF) and microfiltration (MF) in hybrid systems, Donnan dialysis (DD) and electrodialysis (ED)

as well as membrane bioreactors (MBR), if properly selected, offer the advantage of producing high quality

drinking water without inorganic anions.

I

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Authors and Affiliations

M. Bodzek
K. Konieczny
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Abstract

Raw meat-based diets for pet nutrition are becoming increasingly popular. The percentage of meat content, composition of nutrients, and amount of additives started to play an important role in the recipe of a given food. However, the use of healthier and unprocessed food must also be balanced with the animal’s specific needs based on its anatomy, physiology, and behavior. There are many potential advantages and disadvantages of a biologically appropriate raw food (BARF) diet, and all of them should be considered before switching to this approach. Raw meat is considered a diet closest to nature and least processed. However, raw diets threaten pet health because of the potential for nutrient imbalances. The choice of raw meat in pets’ everyday diet should be supported by the veterinarian’s medical decision and preferably also with nutritionist help. Growing animals require a specific Ca:P ratio in their diet, which may be improper in raw meat. For cats, taurine levels must be carefully checked. In addition, an imbalanced raw-meat diet can be the cause of poor semen quality in males. Females are prone to inhibition of the estrus cycle, especially due to hyperthyroidism. Exogenous thyroid hormone intake is a real concern when feeding a neck/head meat with thyroid glands. There is also a possibility of bacterial or parasitic presence in raw meat. The present paper aims to summarize the current state of knowledge about the benefits and threats of eating a raw meat diet for the health concerns of companion animals.
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Authors and Affiliations

D. Główny
1
N. Sowińska
2 4
A. Cieślak
3
M. Gogulski
4 5
K. Konieczny
1
M. Szumacher-Strabel
3

  1. Poznan University of Life Sciences, Faculty of Veterinary Medicine and Animal Science, Department of Internal Diseases and Diagnostics, Poznan, Poland
  2. Poznan University of Life Sciences, Faculty of Veterinary Medicine and Animal Science, Department of Genetics and Animal Breeding, Wołynska 33, 60-637 Poznan, Poland
  3. Poznan University of Life Sciences, Faculty of Veterinary Medicine and Animal Science, Department of Animal Nutrition, Wołynska 33, 60-637 Poznan, Poland
  4. Poznan University of Life Sciences, Faculty of Veterinary Medicine and Animal Science, University Centre of Veterinary Medicine, Poznan, Poland
  5. Poznan University of Life Sciences, Faculty of Veterinary Medicine and Animal Science, Department of Preclinical Sciences and Infectious Diseases, Poznan, Poland
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Abstract

Crystals of PbTiO3 and 0.9PbTiO3-0.1(Na0.5Bi0.5)TiO3 were obtained by the flux growth method whereas crystals of (Na0.5Bi0.5)TiO3 were growth by the Czochralski method. Raman spectroscopy and polarized light microscopy were performed at room temperature. The Raman spectra of 0.9PbTiO3-0.1(Na0.5Bi0.5)TiO3 shown significant changes comparing to the base materials PbTiO3 and (Na0.5Bi0.5)TiO3. A domain structure was investigated by use polarized light microscopy. Dielectric permittivity measurements were carried out in the temperature range from 20°C to 550°C and a frequency from 1 kHz to 1 MHz. These showed higher dielectric permittivity for the crystals 0.9PbTiO3-0.1(Na0.5Bi0.5)TiO3 than the source materials PbTiO3 and (Na0.5Bi0.5)TiO3.

The high value of dielectric constant makes it possible to applied 0.9PbTiO3-0.1(Na0.5Bi0.5)TiO3 as efficient dielectric medium in a capacitors. The small size of the domain structure with the easy possibility of switching by application of an external electric field, give opportunities to apply these materials to FRAM memory applications. Moreover, the high sensitivity of these materials to the surrounding gases e.g. ammonia, chlorine, hydrogen, etc., allows the construction of sensor devices.

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Authors and Affiliations

P. Czaja
ORCID: ORCID
M. Piasecki
M.B. Zapart
J. Suchanicz
K. Konieczny
J. Michniowski
D. Sitko
G. Stachowski
K. Kluczewska-Chmielarz

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