Wyniki wyszukiwania - AGRO

1

Comments on the use of nutrients by athletes

100%

Raczynska B.

Polish Journal of Environmental Studies

|

1998

|

tom 07

|

nr 6

2

The biotechnology of biomass of fresh water algae Lemna Minor enrichment with iodine and the determination of its content at the different doses in the nutritive environment by the method of capillary electrophoresis

88%

Ryvak O., Mierzlov S.

Pasze Przemysłowe

|

2017

|

tom 26

|

nr 3-4

3

Elements of quality assurance system in nutrient and dissolved oxygen analysis

88%

Danowska B., Drgas N., Lysiak-Pastuszak E., Piechowska B.

Oceanological Studies

|

2000

|

tom 29

|

nr 4

4

Phytosorption of nutrients in the herb layer of the Vaccinio uliginosi-Pinetum Kleist 1929 community

88%

Dygus K. H., Traczyk T.

Polish Ecological Studies

|

1995

|

tom 21

|

nr 2

5

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Review of the studies on nutrition in Polish preschool children. Part 2. Meals prepared at preschool

76%

Merkiel-Pawlowska S., Chalcarz W.

Roczniki Państwowego Zakładu Higieny

|

2017

|

tom 68

|

nr 1

This article is the second part of the review of the studies on nutrition in Polish preschool children. In the first part, studies on preschool menus assessment were presented and summarised, whereas this article reviews the studies on the assessment of foods and meals prepared at preschool. The aim of this review was to present and summarise the results of the studies on the assessment of meals prepared for children at preschool based on the reports from the preschool food storeroom, the studies on chemical analysis of sample meals served at preschools and the studies on comparison of the results of chemical analysis to the results obtained by calculations obtained from computer programmes. The results of the studies on the assessment of meals prepared for children at preschool using various methods confirm most of the findings from the studies on the assessment of preschool menus. It is necessary to carry out more studies on energy and nutrient content assessment of preschool meals determined by chemical analysis of sample meals in order to provide more accurate information about the real nutritional value of meals served to children at preschool. It is essential to update the Polish food composition tables to enable more precise calculations of nutritional value of the meals planned for children at preschools which will improve the possibility of adjusting preschool meals to the real needs of both 3-year-old and 4-6-year-old children during their stay at preschool.

6

Water chemistry of Lake Gilwa

76%

Grochowska J., Tandyrak R.

Journal of Elementology

|

2010

|

tom 15

|

nr 1

89-99

The study was carried on Lake Giłwa (100.8 ha, 9.4 m), in the drainage basin of the Giłwa and Pasłęka rivers. The data obtained in the study allowed the authors to classify Lake Giłwa as a water body belonging to the third stability degree according to Patalas (1960). As evidenced in the study, Lake Giłwa is a highly eutrophic reservoir. The lake waters were characterized by a high content of nutrients, up to 1.40 mg P·dm-3 and 12.47 mg N·dm-3. The high fertility of the lake was also exhibited by the values of BOD5 reaching 7 mg O2·dm-3, chlorophyll a content (73 mg·m-3) and low transparency — 0.7 m. In the peak of the summer, the stagnation oxygen profile is represented by a clinograde curve typical for eutrophic lakes, while carbon dioxide distribution in the water column is shown by a „reverse” clinograde curve, also typical for fertile reservoirs. The study has revealed that the water in Lake Giłwa is well buffered, as shown by the alkalinity values, 2.5-5.0 mval dm-3. Total hardness of the reservoir water varied from 157.1 to 278.8 mg CaCO3·dm-3, which is typical of hard water. The hardness was conditioned mainly by the calcium content. With the River Giłwa, the lake receives wastewater from the wastewater treatment plant in Gietrzwałd, which is manifested, for example, by the high values of electrolytic conductivity (321-476 µS·cm-1), indicating the degree of mineral pollution of the lake. Despite the wastewater input, the amount of chlorides is rather low, 20 mg Cl·dm-3 at the most.

7

Are dietary supplements dangerous? Assessing how society perceives the usage of dietary supplements - results of the preliminary analysis of nationwide survey data

76%

Kardas P., Dorozynski J., Zdanowicz P., Tyrna D., Lis P., Mroczka M., Lewek P.

Medical Science Pulse

|

2018

|

tom 12

|

nr 2

Background: Dietary supplements (DSs) are concentrated sources of nutrients and/or other substances, whose purpose is to supplement the normal diet. Their consumption in Poland has been on the rise, leading to numerous concerns. However, current legislation does not provide any background for a relevant pharmacovigilance system. Therefore, little is known about their adverse effects (AEs) or patterns of use in Poland. To shed some light on this, we conducted a nationwide survey. Aim of the study: To assess the prevalence of, and the reasons for, the use of dietary supplements in Poland via national survey with a collection and an analyse of supposed adverse effects of dietary supplements. Material and methods: The study was conducted using an online survey based on the original questionnaire. In this report, we present the results of the analysis of the first 200 responses. Results: As many as 55.5% (111) of respondents were ‘definitely sure’ or ‘rather sure’ about DSs safety. However, 70.5% (141) believed that they could have negative effects. Over 3/4 (153) of respondents used DSs themselves, and 61.0% (122) used them within last 12 months. Of those using DSs, 11.1% (17) reported diverse Aes, with GI tract irritation and mental disturbances being the most common (experienced by 35.3% (6), and 17.6% (3) of those reporting AE s, respectively). Conclusions: Respondents had mixed feelings about DS safety. Despite that, they used these products frequently. Of a note is high incidence of adverse effects experienced by DS users. This undoubtedly points to the need for a relevant pharmacovigilance system.

8

Nutrient stoichiometric relations and biogeochemical niche in coexisting plants species: effect of simulated climate change

76%

Penuelas J., Sardans J., Ogaya R., Estiarte M.

Polish Journal of Ecology

|

2008

|

tom 56

|

nr 4

613-622

Here we define a “biogeochemical niche” characterized by the species position in the multivariate space generated by its content not only of macronutrients like N, P or K, but also of micronutrients such as Mo, Mg and Ca, and trace toxic elements such as Pb and As. We then hypothesize that the flexibility of the species “biogeochemical niche” will influence the quality of plant tissue, which may have implications for herbivores, and will affect the species capacity to respond to disturbances and climate change and to adapt to the new climate conditions. We show with a simple multivariate procedure, a principal component analysis (PCA), first, that there is a strong differentiation in the total and relative (stoichiometry) content of the different elements in coexisting plant species, and, second, that there is species-specific plasticity in the response of this elemental composition to experimental climate change. The concentrations of foliar macro and micronutrients, as well as trace elements were measured in several tree species (Quercus ilex L., Phillyrea latifolia L. and Arbutus unedo L. in a Mediterranean broad leaf forest (Prades Mts) and in shrub species (Erica multiflora L., Globularia alypum L. and Dorycnium pentaphyllum Scop.) in a Mediterranean shrubland (Garraf Mts) in control plants and in plants grown in experimental drought and warming plots. The climate conditions were monitored during the period 1999–2005. During this period, in the Prades experiment the drought plots had on average a soil moisture content 9% lower than the control plots, whereas in the Garraf experiment the drought treatment led to a mean reduction in soil moisture of 21% and the warming treatment to 0.9ºC rise. The species with greater changes in biogeochemical niche under increased warming or drought, Arbutus unedo, Erica multiflora and Globularia alypum, were those that were also more affected in growth, photosynthetic capacity and other eco-physiological traits. The species differentiations indicate a strong biogeochemical niche, and that the changes in biogeochemical niche are probably an underlying factor in community structure shifts.

9

Starter fertilization of maize as a method to improve the efficiency of nutrient application

76%

Szulc P.

Polish Journal of Natural Sciences

|

2017

|

tom 32

|

nr 4

Phosphorus (P) in most regions worldwide is the most important nutrient, second only to nitrogen (N), with the potential to limit agricultural production. It is an essential nutrient for plant growth and development, while the cycle of this nutrient in nature is also essential for humans and animals. In plants it is a component of organic compounds, which accumulate large amounts of energy used in numerous processes taking place in cells. Plants adequately nourished with phosphorus contain more vitamins and carotene, and less oxalic acid, which excess results in deterioration of quality of produced food and feed. At appropriate phosphorus nutrition plants achieve greater efficiency of photosynthesis and are characterized by improved water relations, as a consequence they produce higher grain yields and dry matter yields of the aboveground parts. This study presents original results of five field trails concerning different application methods for nutrients (N and P) in maize culture. Presented data come from controlled field trials, which were conducted at the Department of Agronomy, the Poznań University of Life Sciences.

10

Nutrients and heavy metals in biochar produced by sewage sludge pyrolysis: its application in soil amendment

76%

Liu T., Liu B., Zhang W.

Polish Journal of Environmental Studies

|

2014

|

tom 23

|

nr 1

The production of sewage sludge has been sharply increasing by municipal sludge treatment plants in China. Sewage sludge is a difficult waste to manage not only due to the high quantities produced but also due to its high concentration of heavy metals and pathogens. The pyrolytic conversion of sewage sludge to biochar and then applied to the land is a sustainable management potion. Therefore, the aim of this work is to evaluate the characteristics of nutrients and heavy metals in biochar from sewage sludge pyrolysis, and pot experiments were carried out with different treatments consisting of infertile and contaminated soils. The results showed that the content of major plant nutrients (N, P, K) in sewage sludge biochar meets agricultural requirements. The concentrations of heavy metals (Cu, Pb, Zn, Cd, and Cr) were evidently increased in biochar, but those of available heavy metals were decreased. The sewage sludge biochar can improve soil fertility and enhance plant growth while not increasing plant uptake of heavy metals, and remedied contaminated soil by reducing the plant availability of heavy metals.

11

Fertilising recommendation system based on results of agrochemical soil testing

76%

Budnakova M., Cermak P.

Nawozy i Nawożenie

|

2009

|

nr 37

12

Dairy wastewater treatment by two-stage activated-sludge with a sequencing batch reactor [SBR]

76%

Janczukowicz W., Krzemieniewski M., Pesta J., Szewczyk M.

Natural Sciences

|

2001

|

tom 08

111-121

13

Effect of chromium on growth, biochemicals and nutrient accumulation of paddy (Oryza sativa L.)

76%

Nagarajan M., Sankar Ganesh K.

International Letters of Natural Sciences

|

2014

|

tom 18

Chromium is a heavy metal; this element is considered as an environmental hazard. Toxicity effects of chromium on growth and development of plants including inhibition of germination process decrease of growth and biomass of plant. The aim of this research is to study accumulation of Chromium along with nutrients and its effect on the growth of Paddy plant (Oryza sativa L). Thus, paddy seedlings grown in petriplates lined with filter paper undergoing, different treatments of Cr (0, 2.5, 5, 10, 25, 50, 75, 100 and 200 mg/L). After one week seedlings were removed and morpho physiological parameters like root length, shoot length and dry weight of plants and Biochemicals ,accumulation of nutrients along with Cr in roots and shoots were determined. The results indicated that the concentrations more than 100 mg/L chromium cause the reduction of morphophysiology parameters in the treatment plants rather than control plant and Cr addition in the cultures caused enhancement of chromium content in roots and shoots of plant seedlings. Similarly the biochemicals and nutrient accumulation also affected by increasing concentrations of chromium. It was also noted that accumulation of chromium in the roots was much higher than the shoots of the seedlings under treatment.

14

The origin of humic substances and their role in the aquatic environment

76%

Szpakowska B.

International Journal of Ecohydrology and Hydrobiology

|

2003

|

tom 03

|

nr 2

165-172

15

Effect of irrigation and nutrient on physical properties of safflower seeds

76%

Feyzollahzadeh M., Modares Motlagh A., Nikbakht A. M.

International Agrophysics

|

2014

|

tom 28

|

nr 1

The effect of irrigation and nutrient treatments on physical properties of safflower seeds was investigated. Physical properties of safflower seeds were determined at a moisture content of 7% w.b. The parameters determined at different treatments were: size, geometric mean diameter, sphericity, surface area, mass, volume, bulk and true densities, porosity, and static and dynamic coefficient of friction. The results showed a better effect of the use of organic fertilizers in comparison with chemical ones. The results showed that nutrient and irrigation treatments had a significant effect on most of the physical properties of safflower seeds at p<0.01.

16

Effect of nutrient media and phytohormones on in vitro establishment of Bambusa balcooa Roxb.

76%

Khan H. R., Burla S., Siri N., Lavanya P.

International Letters of Natural Sciences

|

2014

|

tom 12

|

nr 1

Bambusa balcooa.Roxb. is one of the most commercially important bamboo species. Some varieties of bamboo are being grown in the company’s green house. However this species is very rare and it was not cultured until now due to lack of demand and maintenance problems. In this work B. balcooa ex-plants have been established and propagated by the axillary shoot bud proliferation method. Earlier several works have been done on this plant and a protocol has been. This work emphasizes on effects of phytohormones at different concentrations and combinations upon the novel propagules that develop from the bamboo explants on placing them in multiplication media. The propagules placed in media containing cytokinins BAP (2 mg/L) and Kinetin (1 mg/L) exhibited best results of linear as well as radial growth. The other propagules in media with combinations of BAP, Kinetin and NAA were found to be dried out and did not depict noticeable growth. Comparatively next best growth pattern to the former was observed in control media that lacked phytohormones. This experiment was helpful in estimating the quantity and effect of particular plant growth regulating hormones on the Bambusa balcooa.Roxb.

17

Changes in nutrient and heavy metal content levels of sawdust due to vermicomposting by Allomyrina dichotoma subsp. tunobosonis

76%

Hoang C. N., Yang Z.-W., Huang M.-Y., Lin K.-H., Yang C.-M., Nguyen M. K.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2019

|

tom 100

|

nr 2

18

Eutrophication in the Southern Baltic Sea between 1989-1998

76%

Lysiak-Pastuszak B., Niemkiewicz E., Drgas N.

Oceanological Studies

|

2000

|

tom 29

|

nr 4

19

Inhibition of angiogenesis in the treatment of tumors

76%

Ostrowski K., Kinsner A.

Archivum Immunologiae et Therapiae Experimentalis

|

2001

|

tom 49

|

nr 1

20

Food functionality of fishes

76%

Fujino Y., Kuwata J.

Polish Journal of Food and Nutrition Sciences

|

1998

|

tom 07

|

nr 2 Suppl.

Ograniczanie wyników