Diffusing alpha emitters radiation therapy (DAERT) is a type of cancer treatment that utilizes alpha-emitting radionuclides to target malignant cells. The therapy is designed to selectively deliver high doses of radiation to tumors while minimizing damage to surrounding healthy tissues. Alpha particles are a type of ionizing radiation composed of two protons and two neutrons, and they are relatively heavy and positively charged. As a result, their range is short in biological tissues, typically only a few cell diameters.
Surface plasmons are collective oscillations of free electrons at the interface between a conductor (usually a metal) and an dielectric (such as air or a polymer). These oscillations are coupled to electromagnetic waves, leading to localized surface plasmon resonance (LSPR) phenomena. Surface plasmons are particularly important in the field of nanotechnology and photonics because they can concentrate electromagnetic fields at the nanoscale, enhancing light-matter interactions.
Surface plasmon polaritons (SPPs) are electromagnetic waves that travel along the interface between a dielectric material and a conductor, typically metal. They arise from the coupling of light with the oscillations of free electrons at the surface of the metal. SPPs are characterized by their ability to propagate along the surface while being confined to a very small region near the interface, often on the scale of a fraction of the wavelength of light.
"Quaternary Africa" generally refers to the geological time period known as the Quaternary, which began around 2.6 million years ago and lasts to the present. This period is characterized by significant climatic changes, the development of modern ecosystems, and the evolution and migration of humans.
The term "Quaternary Caribbean" generally refers to geological and ecological studies of the Caribbean region during the Quaternary period, which spans from about 2.6 million years ago to the present. This period is characterized by significant climatic changes, including glacial and interglacial cycles, and it has had a profound impact on the geology, biodiversity, and human history of the Caribbean islands.
Quaternary Europe refers to the period of the Quaternary geological time scale in the context of Europe, which began approximately 2.6 million years ago and continues to the present day. The Quaternary is divided into two major epochs: the Pleistocene and the Holocene. 1. **Pleistocene Epoch (about 2.
Radioimmunotherapy (RIT) is a targeted cancer treatment that combines radiation therapy with immunotherapy. It involves the use of monoclonal antibodies that are specifically designed to bind to specific antigens on cancer cells. These antibodies are then linked to a radioactive isotope, which allows for the delivery of targeted radiation directly to the cancer cells.
Radiotherapy & Oncology is a peer-reviewed scientific journal that focuses on the field of radiation oncology. It encompasses research, clinical studies, and advances in the treatment of cancer using radiotherapy. The journal publishes articles on various aspects of radiotherapy, including techniques, technology, clinical trials, and the biological effects of radiation on cancer cells.
Quaternary Oceania refers to the geological and climatic developments in the region of Oceania during the Quaternary period, which spans the last 2.6 million years to the present. This period is characterized by significant climatic changes, including glacial and interglacial cycles, which have had a profound impact on sea levels, ecosystems, and human populations in the region. **Key aspects of Quaternary Oceania include:** 1.
The term "Quaternary South America" typically refers to the Quaternary Period in the geological time scale, which encompasses the last 2.6 million years up to the present. It is divided into two epochs: the Pleistocene and the Holocene. During this time, significant geological, climatic, and biological changes occurred, influencing the landscape, climate, and ecosystems of South America.
The Quaternary period is the latest geological time period of the Earth's history, spanning from about 2.58 million years ago to the present. It is divided into two epochs: the Pleistocene and the Holocene. The Quaternary is characterized by significant events and changes, both in terms of Earth's climate and biological evolution.
Quaternary geochronology is the branch of geology that focuses on dating and studying the Quaternary period, which is the most recent geological time period that spans from approximately 2.58 million years ago to the present. This period encompasses two major epochs: the Pleistocene, characterized by repeated glacial cycles, and the Holocene, which began around 11,700 years ago and continues to the present day.
Quaternary geology is the study of the most recent geological time period, known as the Quaternary period, which spans from about 2.58 million years ago to the present. This period is characterized by significant climatic changes, including the development of glaciers during the ice ages and the subsequent warming periods. The Quaternary period is divided into two epochs: the Pleistocene and the Holocene.
Quaternary paleontological sites refer to locations where fossilized remains of organisms from the Quaternary period are found. The Quaternary period is the most recent geological time period, spanning from about 2.6 million years ago to the present. It is characterized by significant climatic changes, the appearance of modern humans, and the extinction of many large fauna.
The Holstein interglacial refers to a warm period that occurred during the Pleistocene Epoch, specifically within the Eemian interglacial stage, which lasted from approximately 130,000 to 115,000 years ago. The Holstein interglacial is recognized in the geological record, particularly in northern Europe, including areas like Germany, where it is well-studied.
Ludham Borehole is a key geological site located in Norfolk, England. It is particularly significant for its contributions to the understanding of the geological history of the region. The borehole provides valuable data on sedimentation, stratigraphy, and the subsurface geological formations in the area, which are important for studies in various fields, including geology, hydrology, and environmental science.
The term "Northgrippian" refers to a geological age or stage within the Late Ordovician period, which occurred approximately 458 to 453 million years ago. It is part of the broader Ordovician period, which is known for its diverse marine life and significant geological developments. The Northgrippian is specifically recognized in the context of the stratigraphy and paleontology of certain regions, particularly in North America and parts of Europe.
Quaternary science is the study of the Quaternary period, which is the most recent geological time period, spanning from about 2.58 million years ago to the present. This field encompasses various disciplines, including geology, paleontology, archaeology, and environmental science, as it examines the Earth's most recent climatic changes, the development of human civilizations, and the evolution of ecosystems.
A phonon is a quantized mode of vibration that occurs in a rigid crystal lattice, such as those found in solid materials. In other words, it is the quantum mechanical description of lattice vibrations. Phonons play a key role in various physical properties of solids, including thermal conductivity and sound propagation. Phonons can be thought of as discrete packets of vibrational energy, similar to how photons are packets of electromagnetic energy.
A phonon polariton is a quasiparticle that arises from the coupling of two different types of excitations: phonons, which are quantized modes of vibrations in a lattice (typically in solid materials), and polaritons, which are mixtures of light (photons) and matter excitations.