The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
The document discusses the Bragg peak, which is when a proton beam stops at a certain point in tissue and releases all of its energy, destroying cancer cells, before disappearing. This allows the proton beam to target cancer cells precisely and minimize damage to surrounding healthy tissue, unlike X-rays which continue radiating behind the target area. By concentrating its full energy on cancer at the Bragg peak, proton therapy maximizes treatment of tumors while reducing side effects.
The document discusses two proton treatment methods - wobbling and scanning. The wobbling method uses a thin plate to expand the proton beam, making it suitable for large tumors. The scanning method divides the proton beam intensity into several hundred parts to precisely apply the beam to the tumor size and shape, minimizing radiation exposure to surrounding tissues. This allows for more accurate radiation delivery according to the tumor shape. The document concludes that the scanning method is the most precise proton treatment option and is available at the Samsung Medical Center, which is one of only two facilities in the world that offers ultra-high speed line scanning treatment.
PISA 2012 Evaluating school systems to improve educationEduSkills OECD
PISA 2012 is the programme’s 5th survey. It assessed the competencies of 15-year-olds in reading, mathematics and science (with a focus on mathematics) in 65 countries and economies.
Around 510 000 students between the ages of 15 years 3 months and 16 years 2 months participated in the assessment, representing about 28 million 15-year-olds globally.
The students took a paper-based test that lasted 2 hours. The tests were a mixture of open-ended and multiple-choice questions that were organised in groups based on a passage setting out a real-life situation. A total of about 390 minutes of test items were covered. Students took different combinations of different tests. They and their school principals also answered questionnaires to provide information about the students' backgrounds, schools and learning experiences and about the broader school system and learning environment.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
The document discusses the Bragg peak, which is when a proton beam stops at a certain point in tissue and releases all of its energy, destroying cancer cells, before disappearing. This allows the proton beam to target cancer cells precisely and minimize damage to surrounding healthy tissue, unlike X-rays which continue radiating behind the target area. By concentrating its full energy on cancer at the Bragg peak, proton therapy maximizes treatment of tumors while reducing side effects.
The document discusses two proton treatment methods - wobbling and scanning. The wobbling method uses a thin plate to expand the proton beam, making it suitable for large tumors. The scanning method divides the proton beam intensity into several hundred parts to precisely apply the beam to the tumor size and shape, minimizing radiation exposure to surrounding tissues. This allows for more accurate radiation delivery according to the tumor shape. The document concludes that the scanning method is the most precise proton treatment option and is available at the Samsung Medical Center, which is one of only two facilities in the world that offers ultra-high speed line scanning treatment.
PISA 2012 Evaluating school systems to improve educationEduSkills OECD
PISA 2012 is the programme’s 5th survey. It assessed the competencies of 15-year-olds in reading, mathematics and science (with a focus on mathematics) in 65 countries and economies.
Around 510 000 students between the ages of 15 years 3 months and 16 years 2 months participated in the assessment, representing about 28 million 15-year-olds globally.
The students took a paper-based test that lasted 2 hours. The tests were a mixture of open-ended and multiple-choice questions that were organised in groups based on a passage setting out a real-life situation. A total of about 390 minutes of test items were covered. Students took different combinations of different tests. They and their school principals also answered questionnaires to provide information about the students' backgrounds, schools and learning experiences and about the broader school system and learning environment.