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Investigations on the calorific value of forest chips

100%

Gendek A., Zychowicz W.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

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2014

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nr 63 Agric.Forest Eng.

2

Convectional drying of chips for energy purposes

86%

Gendek A., Glowacki S.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

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2009

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nr 53 Agric.Forest Eng.

67-72

3

The application of elemental analysis for the determination of the elemental composition of lignocellulosic materials

86%

Witczak M., Walkowiak M., Cichy W., Komorowicz M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2015

|

tom 92

4

Comparative analysis of the calorific value of giant fir timber (Abies grandis Lindl.) from various stands in southern Poland

86%

Wasik R., Michalec K.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2012

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tom 11

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nr 3

The paper presents a comparative analysis of wood calorific value of grand fir (Abies grandis Lindl.), originating from four stands of the southern Poland. The research material were the samples, collected from the trunks of 30 trees in each stand. The samples were divided into sections, each containing five annual increments. Then each section was measured: annual ring width and the relative wood density, which was converted to dry wood density, taking the total volumetric shrinkage of 11%. It was assumed that the calorific value of 1 kg dry wood of grand fir is 20.15 MJ. On the basis on the analysis it was found that the average calorific value of 1 m3 of grand fir wood was 8021 MJ. It was shown, that a significantly higher calorific value was obtained by the combustion of 1 m3 wood of giant fir trees, growing on the poorer soil in comparison to the more fertile soils. Statistical analysis also showed that with increasing age of the trees the calorific value of 1 m3 grand fir wood increases significantly.

5

Calorific evaluation and energy potential of grape pomace

86%

Burg P., Ludin D., Rutkowski K., Krakowiak-Bal A., Travnicek P., Zemanek P., Turan J., Visacki V.

International Agrophysics

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2016

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tom 30

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nr 2

6

Combustion heat and calorific value of the mix of sawdust and cones of common pine (Pinus sylvestris L.)

86%

Gendek A.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

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2015

|

nr 66 Agric.Forest Eng.

7

Selection of model parameters of biogas IC engine

72%

Cupial K., Katolik G.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

|

2006

|

tom 06A

8

The determination of energetic potential of waste wood biomass coming from Debica Forestry Management Area as a potential basis for ethanol biofuels of II generation

72%

Wcislo G., Labak N.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2014

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tom 14

|

nr 4

9

Timber waste as a source of energy

72%

Szyszlak-Barglowicz J., Zarajczyk J.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

|

2009

|

tom 09

10

Biomass as an energy source

72%

Lis W.

Intercathedra

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2011

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tom 27

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nr 4

Basic source of a renewable energy in Poland is a biomass. It results from the calorific value of a wood, good accessibility and relatively low cost of a wood raw material. This paper focuses on certain aspects of use of the biomass as a source of energy in Poland as well as its economic implications.

11

Assessment of amount of wood from pruned apple orchards as a source of renewable energy

72%

Rabcewicz J., Bialkowski P., Konopacki P.

Journal of Fruit and Ornamental Plant Research

|

2010

|

tom 18

|

nr 2

249-254

The aim of the studies was to assess the amount of wood to be gained during the pruning of apple orchards. The trials were carried out on the following cultivars of apple: 'Jonagold', 'Elstar', 'Idared', 'Jonica', and 'Rubinstar'. The chosen orchards in which the estimations took place had different interrow widths, tree distances and tree ages. The widths of interrows were from 3.5 m to 4.4 m. The distances between trees were from 1.5 m to 2.5 m. The ages of the trees were from 4 to 17 years. Pruned branches were manually collected from interrows along 20 grown trees. The mass of branches cut from a single tree, and the total mass of wood gathered on 1 hectare of orchard were calculated. The obtained results showed significant variability from 21% to 77%, between replications. This variability depended on cultivar and tree age. According to expectations, the highest amount of cut wood was achieved from the oldest, 17-year-old trees of the 'Elstar' cultivar. The mass of the branches cut from one 'Elstar' tree was from 1.92 kg to 2.43 kg, which means 3.7-4.6 tons of wood from 1 ha of the orchard. Of the 4-6-year-old trees of three cultivars: 'Rubinstar', 'Jonica' and 'Jonagold', grafted on M.26 rootstock,, less wood was achieved from 'Jonica' tree - 1.59 kg, on average. The highest wood mass gave 'Rubinstar' - 2.27 kg per tree, on average. Significant differences were observed in different years of the studies when young trees became older. The most wood came from 'Rubinstar' - 960, 1700 and 2050 kg per hectare, in the 4th, 5th and 6th year of the study, respectively. In the same years 'Jonica' gave 780, 630 and 1450 kg/ha, respectively. In middle-aged orchards with 'Jonagold' and 'Idared', significantly more wood was obtained after cutting 'Jonagold' trees: 2100, 2000 and 2550 kg/ha, than after cutting 'Idared' trees: 780, 1440 and 1350 kg/ha in the 8th, 9th and 10th year of cultivation, respectively.

12

Effect of pre-sowing laser treatment of seed on the biomass yield and energy value of Lavatera thuringiaca L. plant

72%

Budzen M., Sujak A., Wiacek D.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2016

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tom 16

|

nr 4

13

Chosen properties of the forest and agricultural biomass

72%

Kaleta A., Gornicki K., Jarosz A.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

|

2016

|

nr 68

14

Logistics of delivery of cones of selected species of forest trees. Part 2: Cone transport

72%

Aniszewska M., Gendek A.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

|

2016

|

nr 68

15

Properties of pellets made of agglomerated pine and spruce sawdust with the addition of wheat bran

72%

Dobrowolska E.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2023

|

nr 124

16

Possibility of partial replacement of fat by inuline in cookies in order to decrease their caloric value

72%

Zbikowska A., Rutkowska J.

Polish Journal of Food and Nutrition Sciences

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2008

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tom 58

|

nr 1

Effects of inuline used as partial fat replacement in cookies containing three different fats were studied. During experiment sensory and instrumental attributes of reference cookies and low fat formulation in which 50% of fat was replaced with inuline were compared. Shortenings used for preparation of cookies differed greatly in saturated fatty acids (SFA) (29.9–57.5%), trans fatty acids (TFA) (0.9–23.1%) and solid fat content (SFC) at 25°C (13.6–31.6%). Replacement of 50% fat with inuline in the formulations enabled obtaining samples with higher instrumental values of texture and resulted in cookies which were harder and less crispy. Also the intensity of sweet taste was sharply reduced by decreasing the fat content of cookie recipes. On the other hand, replacement of 50% of fat with inuline had a little impact on the intensity of buttery taste of the cookies. The lowest intensity of buttery taste was scored in cookies containing shortening with the lowest content of TFA. Concerning the overall sensory quality, the results showed that the replacement of 50% of fat with inuline resulted only in a moderate decrease in the acceptability of the overall sensory quality. The averaged scores of overall sensory quality were generally high and ranged from 7.1 to 9.1. In conclusion, it has been demonstrated that inuline was suitable for inclusion in cookies, as a fat replacer and as a functional ingredient.

17

Agricultural and forest biomass as feedstock in the manufacture of solid biofuels

58%

Stolarski M., Graban L., Szczukowski S., Tworkowski J.

Polish Journal of Agronomy

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2010

|

nr 02

18

Krytyczna ocena metody oznaczania tłuszczu zalecanej przez Zarząd San.-Epid. w wytycznych do badania posiłków w zakładach żywienia zbiorowego

58%

Wierzchowski J., Dabrowski T.

Roczniki Państwowego Zakładu Higieny

|

1957

|

tom 08

|

nr 2

19

Rosliny na cele energetyczne

58%

Dermanowski S.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

|

2003

|

tom 44

|

nr 1-2

27-32

20

Slodka pokusa

58%

Stankiewicz J.

Żywność, Żywienie, Życie. Szkoła Główna Gospodarstwa Wiejskiego w Warszawie

|

2002

|

nr 1

6-7

Ograniczanie wyników

Investigations on the calorific value of forest chips

Convectional drying of chips for energy purposes

The application of elemental analysis for the determination of the elemental composition of lignocellulosic materials

Comparative analysis of the calorific value of giant fir timber (Abies grandis Lindl.) from various stands in southern Poland

Calorific evaluation and energy potential of grape pomace

Combustion heat and calorific value of the mix of sawdust and cones of common pine (Pinus sylvestris L.)

Selection of model parameters of biogas IC engine

The determination of energetic potential of waste wood biomass coming from Debica Forestry Management Area as a potential basis for ethanol biofuels of II generation

Timber waste as a source of energy

Biomass as an energy source

Assessment of amount of wood from pruned apple orchards as a source of renewable energy

Effect of pre-sowing laser treatment of seed on the biomass yield and energy value of Lavatera thuringiaca L. plant

Chosen properties of the forest and agricultural biomass

Logistics of delivery of cones of selected species of forest trees. Part 2: Cone transport

Properties of pellets made of agglomerated pine and spruce sawdust with the addition of wheat bran

Possibility of partial replacement of fat by inuline in cookies in order to decrease their caloric value

Agricultural and forest biomass as feedstock in the manufacture of solid biofuels

Krytyczna ocena metody oznaczania tłuszczu zalecanej przez Zarząd San.-Epid. w wytycznych do badania posiłków w zakładach żywienia zbiorowego

Rosliny na cele energetyczne

Slodka pokusa