73 research outputs found
Nutritional impact on brain function: Food for thought, emotions and wellbeing
The rate of cognitive and emotional dysfunction is increasing in the modern society, therefore nutritional impact on the
brain functioning is receiving higher attention in science and practice. In order to summarize the latest scientific knowledge
concerning nutritional impact on the nervous system and particularly on the brain functioning we performed literature search and
analysis. Increasing number of scientific data show that macronutrients and micronutrients (vitamins and minerals) affect multiple
brain processes through control of diverse mechanisms as: synaptic transmission, neurotransmitter pathways, signal-transduction
pathways, membrane fluidity, epigenetic changes, etc. Impact of specific macronutrients and micronutrients in brain functioning and
their food source is presented in details. We believe that these data might be of interest to wide spectrum of professionals as:
physicians, nutritionists, psychologists, neuroscientists etc
Nutritional impact on brain function: Food for thought, emotions and wellbeing
The rate of cognitive and emotional dysfunction is increasing in the modern society, therefore nutritional impact on the
brain functioning is receiving higher attention in science and practice. In order to summarize the latest scientific knowledge
concerning nutritional impact on the nervous system and particularly on the brain functioning we performed literature search and
analysis. Increasing number of scientific data show that macronutrients and micronutrients (vitamins and minerals) affect multiple
brain processes through control of diverse mechanisms as: synaptic transmission, neurotransmitter pathways, signal-transduction
pathways, membrane fluidity, epigenetic changes, etc. Impact of specific macronutrients and micronutrients in brain functioning and
their food source is presented in details. We believe that these data might be of interest to wide spectrum of professionals as:
physicians, nutritionists, psychologists, neuroscientists etc
Nutritional impact on brain function: Food for thought, emotions and wellbeing
The rate of cognitive and emotional dysfunction is increasing in the modern society, therefore nutritional impact on the
brain functioning is receiving higher attention in science and practice. In order to summarize the latest scientific knowledge
concerning nutritional impact on the nervous system and particularly on the brain functioning we performed literature search and
analysis. Increasing number of scientific data show that macronutrients and micronutrients (vitamins and minerals) affect multiple
brain processes through control of diverse mechanisms as: synaptic transmission, neurotransmitter pathways, signal-transduction
pathways, membrane fluidity, epigenetic changes, etc. Impact of specific macronutrients and micronutrients in brain functioning and
their food source is presented in details. We believe that these data might be of interest to wide spectrum of professionals as:
physicians, nutritionists, psychologists, neuroscientists etc
Nutritional impact on brain function: Food for thought, emotions and wellbeing
The rate of cognitive and emotional dysfunction is increasing in the modern society, therefore nutritional impact on the
brain functioning is receiving higher attention in science and practice. In order to summarize the latest scientific knowledge
concerning nutritional impact on the nervous system and particularly on the brain functioning we performed literature search and
analysis. Increasing number of scientific data show that macronutrients and micronutrients (vitamins and minerals) affect multiple
brain processes through control of diverse mechanisms as: synaptic transmission, neurotransmitter pathways, signal-transduction
pathways, membrane fluidity, epigenetic changes, etc. Impact of specific macronutrients and micronutrients in brain functioning and
their food source is presented in details. We believe that these data might be of interest to wide spectrum of professionals as:
physicians, nutritionists, psychologists, neuroscientists etc
Attention as a precondition of rehabilitation
Introduction: Attention, as a function, is described as a significant
predictor of recovery after brain injury. It is also a necessary precondition
for the patientβs participation in the further course of rehabilitation.
Attention is defined as the ability to direct and maintain psychic energy
to a selected number of relevant stimuli. The main features of attention
are tenacity and vigilance. Tenacity means the ability to retain psychic
energy for as long as a certain situation requires. For example, solving
a specific task or multiple tasks. Vigilance is a feature of attention that
psychic energy is quickly transferred from one information or stimulus to
another.
Aim: The aim of this study was to examine the influence of an experimental
factor on attention recovery in people with brain injuries.
Method: Two groups of subjects were formed, experimental and control.
The experimental group consisted of subjects with brain injuries and
the control group included their healthy peers. The subjects in both
groups were aged 15-20 years. Subjects of the experimental group were
subjected to the experimental factor.
Results: The results of the study tested with easy-R software system (EZR,
version 1.41.64-bit) showed highly statistically significant differences
(p<.01) between the experimental and control groups.
Conclusion: The application of the experimental factor contributed to the
recovery of attention functions in subjects with brain injuries
Attention as a precondition of rehabilitation
Introduction: Attention, as a function, is described as a significant
predictor of recovery after brain injury. It is also a necessary precondition
for the patientβs participation in the further course of rehabilitation.
Attention is defined as the ability to direct and maintain psychic energy
to a selected number of relevant stimuli. The main features of attention
are tenacity and vigilance. Tenacity means the ability to retain psychic
energy for as long as a certain situation requires. For example, solving
a specific task or multiple tasks. Vigilance is a feature of attention that
psychic energy is quickly transferred from one information or stimulus to
another.
Aim: The aim of this study was to examine the influence of an experimental
factor on attention recovery in people with brain injuries.
Method: Two groups of subjects were formed, experimental and control.
The experimental group consisted of subjects with brain injuries and
the control group included their healthy peers. The subjects in both
groups were aged 15-20 years. Subjects of the experimental group were
subjected to the experimental factor.
Results: The results of the study tested with easy-R software system (EZR,
version 1.41.64-bit) showed highly statistically significant differences
(p<.01) between the experimental and control groups.
Conclusion: The application of the experimental factor contributed to the
recovery of attention functions in subjects with brain injuries
ΠΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π½Π° ΠΏΡΠΈΠΌΠ΅Π½Π° Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΠΌΠ° Ρ Π·Π°ΡΡΠΈΡΠΈ ΠΆΠΈΠ²ΠΎΡΠ½Π΅ ΡΡΠ΅Π΄ΠΈΠ½Π΅
OΠ΄ ΡΠ²ΠΎΠ³ ΡΡΠ΅ΠΌΠ΅ΡΠ΅ΡΠ° Ρ ΡΠ΅Π΄Π°ΠΌΠ΄Π΅ΡΠ΅ΡΠΈΠΌ Π³ΠΎΠ΄ΠΈΠ½Π°ΠΌΠ° Π΄Π²Π°Π΄Π΅ΡΠ΅ΡΠΎΠ³ Π²Π΅ΠΊΠ° Π΄ΠΎ Π΄Π°Π½Π°Ρ, ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ° Π³Π΅Π½Π΅ΡΠΈΡΠΊΠΎΠ³ ΠΈΠ½ΠΆΠ΅ΡΠ΅ΡΡΡΠ²Π° ΠΎΡΠ²ΠΎΡΠΈΠ»Π° ΡΠ΅ ΡΠΈΡΠΎΠΊ Π½ΠΈΠ· ΠΏΡΠΈΠΌΠ΅Π½Π° ΠΏΡΠ΅ ΡΠ²Π΅Π³Π° Ρ Π½Π°ΡΡΠΈ, ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΠΈ Π»Π΅ΠΊΠΎΠ²Π°, ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΠΈ ΠΈ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΠΈ Ρ
ΡΠ°Π½Π΅. Π£ΠΏΠΎΡΡΠ΅Π±Π° Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΠΌΠ° Ρ ΠΎΠ²ΠΈΠΌ Π΄Π΅Π»Π°ΡΠ½ΠΎΡΡΠΈΠΌΠ° ΡΠ΅Π΄Π½ΠΎ ΡΠ΅ ΠΎΠ΄ Π½Π°ΡΠ°ΠΊΡΡΠ΅Π»Π½ΠΈΡΠΈΡ
ΠΏΠΈΡΠ°ΡΠ° Π΄Π°Π½Π°ΡΡΠΈΡΠ΅ Π½Π° ΠΊΠΎΡΠ΅ ΡΠ΅ΠΊ ΡΡΠ΅Π±Π° Π΄Π° ΡΠ΅ Π΄Π΅ΡΠΈΠ½ΠΈΡΡ ΠΎΠ΄Π³ΠΎΠ²ΠΎΡΠΈ. ΠΠ΄ ΡΠ²ΠΈΡ
Π°ΠΊΡΡΠ΅Π»Π½ΠΈΡ
ΡΠ΅ΠΌΠ° ΠΈΠ· ΠΎΠ²Π΅ ΠΎΠ±Π»Π°ΡΡΠΈ Π½Π°ΡΠΌΠ°ΡΠ΅ ΡΠ΅ ΠΏΠ°ΠΆΡΠ΅ ΠΏΠΎΡΠ²Π΅ΡΠ΅Π½ΠΎ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π½ΠΎΡ ΠΏΡΠΈΠΌΠ΅Π½ΠΈ Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΠΌΠ° Ρ Π·Π°ΡΡΠΈΡΠΈ ΠΆΠΈΠ²ΠΎΡΠ½Π΅ ΡΡΠ΅Π΄ΠΈΠ½Π΅. Π£Π·Π΅Π²ΡΠΈ Ρ ΠΎΠ±Π·ΠΈΡ Π΄Π° ΡΠ΅ ΠΏΠΈΡΠ°ΡΠ΅ Π·Π°ΡΡΠΈΡΠ΅ ΠΆΠΈΠ²ΠΎΡΠ½Π΅ ΡΡΠ΅Π΄ΠΈΠ½Π΅ ΡΠ΅Π΄Π½ΠΎ ΠΎΠ΄ Π½Π°ΡΠ°ΠΊΡΡΠ΅Π»Π½ΠΈΡΠΈΡ
ΠΏΠΈΡΠ°ΡΠ° Π΄Π°Π½Π°ΡΡΠΈΡΠ΅, Ρ ΠΎΠ²ΠΎΠΌ ΡΠ°Π΄Ρ ΠΏΡΠ΅Π·Π΅Π½ΡΠΎΠ²Π°Π»ΠΈ ΡΠΌΠΎ ΠΏΠΎΡΠ΅Π΄ΠΈΠ½Π΅ ΠΏΡΠΈΠΌΠ΅ΡΠ΅ ΡΠΏΠΎΡΡΠ΅Π±Π΅ Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΌΠΈΠΊΡΠΎΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΠΌΠ°, Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ
Π±ΠΈΡΠ°ΠΊΠ° ΠΈ Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΆΠΈΠ²ΠΎΡΠΈΡΠ° ΠΊΠ°ΠΎ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π½ΠΈΡ
ΡΠ΅ΡΠ΅ΡΠ° ΠΎΠ²ΠΎΠ³ Π³ΠΎΡΡΡΠ΅Π³ ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ°. Π‘ ΠΎΠ±Π·ΠΈΡΠΎΠΌ Π΄Π° ΡΠ΅ Ρ ΡΠ°Π²Π½ΠΎΡΡΠΈ ΠΏΠΎΡΠ»Π΅Π΄ΡΠΈΡ
Π½Π΅ΠΊΠΎΠ»ΠΈΠΊΠΎ Π³ΠΎΠ΄ΠΈΠ½Π° Π²ΠΎΠ΄Π΅ ΠΎΡΡΡΠ΅ ΠΏΠΎΠ»Π΅ΠΌΠΈΠΊΠ΅ ΠΎΠΊΠΎ Π΄Π°ΡΠ΅ ΠΏΡΠΈΠΌΠ΅Π½Π΅ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ Π³Π΅Π½Π΅ΡΠΈΡΠΊΠΎΠ³ ΠΈΠ½ΠΆΠ΅ΡΠ΅ΡΡΡΠ²Π°, ΡΠ°ΡΠ½ΠΎ ΡΠ΅ Π΄Π° ΡΠΌΠΎ Π΄Π°Π»Π΅ΠΊΠΎ ΠΎΠ΄ ΠΊΠΎΠ½Π°ΡΠ½Π΅ ΠΎΠ΄Π»ΡΠΊΠ΅. ΠΠ²ΠΈΠ΄Π΅Π½ΡΠ½ΠΎ ΡΠ΅ Π΄Π° Π½Π°Ρ Ρ Π΄Π°ΡΠΈΠΌ ΠΊΠΎΡΠ°ΡΠΈΠΌΠ° ΠΌΠΎΡΠ° Π²ΠΎΠ΄ΠΈΡΠΈ ΠΎΠΏΡΠ΅Π· ΠΈ Π°Π½Π°Π»ΠΈΠ·Π° ΠΏΠΎΡΡΠΎΡΠ΅ΡΠΈΡ
ΠΈ Π±ΡΠ΄ΡΡΠΈΡ
Π½Π°ΡΡΠ½ΠΈΡ
ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ° Π½Π° ΡΠ΅ΠΌΡ Π±Π΅Π·Π±Π΅Π΄Π½ΠΎΡΡΠΈ ΠΎΠ²Π΅ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅
ΠΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π½Π° ΠΏΡΠΈΠΌΠ΅Π½Π° Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΠΌΠ° Ρ Π·Π°ΡΡΠΈΡΠΈ ΠΆΠΈΠ²ΠΎΡΠ½Π΅ ΡΡΠ΅Π΄ΠΈΠ½Π΅
OΠ΄ ΡΠ²ΠΎΠ³ ΡΡΠ΅ΠΌΠ΅ΡΠ΅ΡΠ° Ρ ΡΠ΅Π΄Π°ΠΌΠ΄Π΅ΡΠ΅ΡΠΈΠΌ Π³ΠΎΠ΄ΠΈΠ½Π°ΠΌΠ° Π΄Π²Π°Π΄Π΅ΡΠ΅ΡΠΎΠ³ Π²Π΅ΠΊΠ° Π΄ΠΎ Π΄Π°Π½Π°Ρ, ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ° Π³Π΅Π½Π΅ΡΠΈΡΠΊΠΎΠ³ ΠΈΠ½ΠΆΠ΅ΡΠ΅ΡΡΡΠ²Π° ΠΎΡΠ²ΠΎΡΠΈΠ»Π° ΡΠ΅ ΡΠΈΡΠΎΠΊ Π½ΠΈΠ· ΠΏΡΠΈΠΌΠ΅Π½Π° ΠΏΡΠ΅ ΡΠ²Π΅Π³Π° Ρ Π½Π°ΡΡΠΈ, ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΠΈ Π»Π΅ΠΊΠΎΠ²Π°, ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΠΈ ΠΈ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΠΈ Ρ
ΡΠ°Π½Π΅. Π£ΠΏΠΎΡΡΠ΅Π±Π° Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΠΌΠ° Ρ ΠΎΠ²ΠΈΠΌ Π΄Π΅Π»Π°ΡΠ½ΠΎΡΡΠΈΠΌΠ° ΡΠ΅Π΄Π½ΠΎ ΡΠ΅ ΠΎΠ΄ Π½Π°ΡΠ°ΠΊΡΡΠ΅Π»Π½ΠΈΡΠΈΡ
ΠΏΠΈΡΠ°ΡΠ° Π΄Π°Π½Π°ΡΡΠΈΡΠ΅ Π½Π° ΠΊΠΎΡΠ΅ ΡΠ΅ΠΊ ΡΡΠ΅Π±Π° Π΄Π° ΡΠ΅ Π΄Π΅ΡΠΈΠ½ΠΈΡΡ ΠΎΠ΄Π³ΠΎΠ²ΠΎΡΠΈ. ΠΠ΄ ΡΠ²ΠΈΡ
Π°ΠΊΡΡΠ΅Π»Π½ΠΈΡ
ΡΠ΅ΠΌΠ° ΠΈΠ· ΠΎΠ²Π΅ ΠΎΠ±Π»Π°ΡΡΠΈ Π½Π°ΡΠΌΠ°ΡΠ΅ ΡΠ΅ ΠΏΠ°ΠΆΡΠ΅ ΠΏΠΎΡΠ²Π΅ΡΠ΅Π½ΠΎ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π½ΠΎΡ ΠΏΡΠΈΠΌΠ΅Π½ΠΈ Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΠΌΠ° Ρ Π·Π°ΡΡΠΈΡΠΈ ΠΆΠΈΠ²ΠΎΡΠ½Π΅ ΡΡΠ΅Π΄ΠΈΠ½Π΅. Π£Π·Π΅Π²ΡΠΈ Ρ ΠΎΠ±Π·ΠΈΡ Π΄Π° ΡΠ΅ ΠΏΠΈΡΠ°ΡΠ΅ Π·Π°ΡΡΠΈΡΠ΅ ΠΆΠΈΠ²ΠΎΡΠ½Π΅ ΡΡΠ΅Π΄ΠΈΠ½Π΅ ΡΠ΅Π΄Π½ΠΎ ΠΎΠ΄ Π½Π°ΡΠ°ΠΊΡΡΠ΅Π»Π½ΠΈΡΠΈΡ
ΠΏΠΈΡΠ°ΡΠ° Π΄Π°Π½Π°ΡΡΠΈΡΠ΅, Ρ ΠΎΠ²ΠΎΠΌ ΡΠ°Π΄Ρ ΠΏΡΠ΅Π·Π΅Π½ΡΠΎΠ²Π°Π»ΠΈ ΡΠΌΠΎ ΠΏΠΎΡΠ΅Π΄ΠΈΠ½Π΅ ΠΏΡΠΈΠΌΠ΅ΡΠ΅ ΡΠΏΠΎΡΡΠ΅Π±Π΅ Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΌΠΈΠΊΡΠΎΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΠΌΠ°, Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ
Π±ΠΈΡΠ°ΠΊΠ° ΠΈ Π³Π΅Π½Π΅ΡΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½ΠΈΡ
ΠΆΠΈΠ²ΠΎΡΠΈΡΠ° ΠΊΠ°ΠΎ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π»Π½ΠΈΡ
ΡΠ΅ΡΠ΅ΡΠ° ΠΎΠ²ΠΎΠ³ Π³ΠΎΡΡΡΠ΅Π³ ΠΏΡΠΎΠ±Π»Π΅ΠΌΠ°. Π‘ ΠΎΠ±Π·ΠΈΡΠΎΠΌ Π΄Π° ΡΠ΅ Ρ ΡΠ°Π²Π½ΠΎΡΡΠΈ ΠΏΠΎΡΠ»Π΅Π΄ΡΠΈΡ
Π½Π΅ΠΊΠΎΠ»ΠΈΠΊΠΎ Π³ΠΎΠ΄ΠΈΠ½Π° Π²ΠΎΠ΄Π΅ ΠΎΡΡΡΠ΅ ΠΏΠΎΠ»Π΅ΠΌΠΈΠΊΠ΅ ΠΎΠΊΠΎ Π΄Π°ΡΠ΅ ΠΏΡΠΈΠΌΠ΅Π½Π΅ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ Π³Π΅Π½Π΅ΡΠΈΡΠΊΠΎΠ³ ΠΈΠ½ΠΆΠ΅ΡΠ΅ΡΡΡΠ²Π°, ΡΠ°ΡΠ½ΠΎ ΡΠ΅ Π΄Π° ΡΠΌΠΎ Π΄Π°Π»Π΅ΠΊΠΎ ΠΎΠ΄ ΠΊΠΎΠ½Π°ΡΠ½Π΅ ΠΎΠ΄Π»ΡΠΊΠ΅. ΠΠ²ΠΈΠ΄Π΅Π½ΡΠ½ΠΎ ΡΠ΅ Π΄Π° Π½Π°Ρ Ρ Π΄Π°ΡΠΈΠΌ ΠΊΠΎΡΠ°ΡΠΈΠΌΠ° ΠΌΠΎΡΠ° Π²ΠΎΠ΄ΠΈΡΠΈ ΠΎΠΏΡΠ΅Π· ΠΈ Π°Π½Π°Π»ΠΈΠ·Π° ΠΏΠΎΡΡΠΎΡΠ΅ΡΠΈΡ
ΠΈ Π±ΡΠ΄ΡΡΠΈΡ
Π½Π°ΡΡΠ½ΠΈΡ
ΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ° Π½Π° ΡΠ΅ΠΌΡ Π±Π΅Π·Π±Π΅Π΄Π½ΠΎΡΡΠΈ ΠΎΠ²Π΅ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅
AGRO-WASTE NATURAL FIBER SAMPLE PREPARATION TECHNIQUES FOR BIO-COMPOSITES DEVELOPMENT: METHODOLOGICAL INSIGHTS
In today's engineering industries, there is a growing focus on sustainable and eco-friendly products due to their recyclability, abundant availability and property variability. One key aspect of this sustainability effort is the development of eco-friendly materials, particularly bio composites derived from agricultural waste residues. The physical, mechanical and thermal properties as well as suitability of these fibers depend greatly on the methods used for extraction, processing, chemical modification and physical treatments. Understanding these processes comprehensively is essential for obtaining desired natural fibers/fillers from agricultural waste for creating effective bio composites to meet specific application demands. This study aims to provide a comprehensive assessment of the various extraction and modification techniques employed for natural fibers. It offers an in-depth review of diverse extraction processes, ranging from the initial harvesting to the decortication stage. It has been revealed that the choice of extraction methodologies depends on climate, water resources, local traditions, and the desired fiber quality. Additionally, the paper explores chemical and physical treatments, highlighting how each method influences the structure and properties of natural fibers. Overall, this review offers practical insights into the steps taken to transform agro-waste biomass into desired natural fiber and in turn biocomposite material, while enhancing product quality and performance
Food additives in chemistry lessons
Els additius alimentaris sΓ³n components comuns en els aliments i un bon context d'estudi per a les classes de quΓmica. En aquest treball, es descriu una sessiΓ³ de laboratori per a estudiants de secundΓ ria (17-18 anys). Els alumnes van determinar algunes propietats fΓsiques i quΓmiques de quatre additius Β«desconegutsΒ». Utilitzant els resultats de les proves, els estudiants havien d'esbrinar, entre els deu possibles additius d'una determinada llista, quins eren els quatre additius
analitzats. Els estudiants van treballar en petits grups. Un 26 % dels estudiants (grups) va identificar correctament els quatre additius, un 29 % en va identificar tres i el 45 % en va identificar dos.Food additives are common food components and they should be studied in chemistry classes. This paper describes a lab lesson for high school seniors (17-18 years old). They tested some physical and chemical properties of four
unknown additives. Using the test results the students had to figure out which four of the ten additives from a list given had been tested. The students worked in small groups. All four correct additives were chosen by 26 % of students
(groups), three correct additives by 29 % and two correct additives by 45 % of students
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