Impact of nuclear fragmentation on the stopping power ratio ofC ion beams.

: Nuclear fragmentation generates a diverse dosimetric environment in the path ofC ion beams. Concise parametrization of the beam's composition is paramount for determining key correction factors in clinical dosimetry. This study sets out to provide such a parametrization based on detailed Monte Carlo simulations of clinically relevantC beams.

On the Way to Accounting for Lung Modulation Effects in Particle Therapy of Lung Cancer Patients-A Review.

Particle therapy presents a promising alternative to conventional photon therapy for treating non-small cell lung cancer (NSCLC). However, the heterogeneous structure of lung tissue leads to the degradation of the Bragg peak and thereby to the degradation of the dose distribution. This review offers a comprehensive overview of the models developed to account for these modulation effects.

Pharmacological blockade of the mast cell MRGPRX2 receptor supports investigation of its relevance in skin disorders.

Introduction: Because MRGPRX2 is now recognized as the mast cell receptor for basic secretagogues, there is currently a tremendous interest in whether MRGRPX2 could play an important role in various pruritic dermatoses such as chronic spontaneous urticaria. Therefore, we sought to identify new potent and selective antagonists to pharmacologically characterize the biological role of MRGPRX2.

Methods: Various relevant , , and model systems were used to investigate the role of MRGPRX2.

The Acceptability and Feasibility of Self-Collected HPV Testing for Cervical Cancer Screening Among Black and Latinx Women in Chicago: Perspectives from the Community.

Introduction: Cervical cancer disproportionally affects Black and Latinx women in Chicago. Black and Latinx women have a higher incidence of cervical cancer diagnosis and lower rates of cervical cancer screening than non-Latinx White women. Self-collected high-risk human papillomavirus (HPV) testing has been proposed as a method to address these barriers to screening and prevent cervical cancer.

Metagenomic and -transcriptomic analyses of microbial nitrogen transformation potential, and gene expression in Swiss lake sediments.

The global nitrogen (N) cycle has been strongly altered by anthropogenic activities, including increased input of bioavailable N into aquatic ecosystems. Freshwater sediments are hotspots with regards to the turnover and elimination of fixed N, yet the environmental controls on the microbial pathways involved in benthic N removal are not fully understood. Here, we analyze the abundance and expression of microbial genes involved in N transformations using metagenomics and -transcriptomics across sediments of 12 Swiss lakes that differ in sedimentation rates and trophic regimes.

Dynamics of residential indoor gas- and particle-phase water-soluble organic carbon: measurements during the CASA experiment.

Previous time-integrated (2 h to 4 h) measurements show that total gas-phase water-soluble organic carbon (WSOC) is 10 to 20 times higher inside homes compared to outside. However, concentration dynamics of WSOC and total particle phase WSOC (WSOC)-are not well understood. During the Chemical Assessment of Surfaces and Air (CASA) experiment, we measured concentration dynamics of WSOC and WSOC inside a residential test facility in the house background and during scripted activities.

Indoor air concentrations of PM quartz fiber filter-collected ionic PFAS and emissions to outdoor air: findings from the IPA campaign.

Per- and polyfluoroalkyl substances (PFAS) are prevalent in consumer products used indoors. However, few measurements of ionic PFAS exist for indoor air. We analyzed samples collected on PM quartz fiber filters (QFFs) in 11 North Carolina homes 1-3 times in living rooms (two QFFs in series), and immediately outside each home (single QFF), for 26 ionic PFAS as part of the 9 months Indoor PFAS Assessment (IPA) Campaign.

Evaluation of a prototype array for daily quality assurance in spot scanning proton therapy.

Background: Quality assurance (QA) on a daily basis is an essential task in radiotherapy. In pencil beam scanning proton therapy (PBS), there is a lack of available practical QA devices for routine daily QA in comparison to conventional radiotherapy.

Purpose: The aim was to characterize and evaluate a prototype for the task of daily QA routine for PBS with parameters recommended by the AAPM TG 224, that is, the dose output constancy, the spot position and the distal range verification.

Particle Beam Radiobiology Status and Challenges: A PTCOG Radiobiology Subcommittee Report.

Particle therapy (PT) represents a significant advancement in cancer treatment, precisely targeting tumor cells while sparing surrounding healthy tissues thanks to the unique depth-dose profiles of the charged particles. Furthermore, their linear energy transfer and relative biological effectiveness enhance their capability to treat radioresistant tumors, including hypoxic ones. Over the years, extensive research has paved the way for PT's clinical application, and current efforts aim to refine its efficacy and precision, minimizing the toxicities.

Organization and operation of multi particle therapy facilities: the Marburg Ion-Beam Therapy Center, Germany (MIT).

Purpose: The Marburg Ion-Beam Therapy Center (MIT) is one of two particle therapy centers in Germany that enables the treatment of patients with both protons and carbon ions. The facility was build by Siemens Healthineers and is one of only two centers worldwide built by Siemens (Marburg, Germany and Shanghai, China). The present report provides an overview of technical and clinical operations as well as research activities at MIT.

Analysis of hydrogen peroxide production in pure water: Ultrahigh versus conventional dose-rate irradiation and mechanistic insights.

Background: Ultrahigh dose-rate radiation (UHDR) produces less hydrogen peroxide (HO) in pure water, as suggested by some experimental studies, and is used as an argument for the validity of the theory that FLASH spares the normal tissue due to less reactive oxygen species (ROS) production. In contrast, most Monte Carlo simulation studies suggest the opposite.

Purpose: We aim to unveil the effect of UHDR on HO production in pure water and its underlying mechanism, to serve as a benchmark for Monte Carlo simulation.

Chemoinformatic regression methods and their applicability domain.

The growing interest in chemoinformatic model uncertainty calls for a summary of the most widely used regression techniques and how to estimate their reliability. Regression models learn a mapping from the space of explanatory variables to the space of continuous output values. Among other limitations, the predictive performance of the model is restricted by the training data used for model fitting.

Sexual Orientation and Cervical Cancer Screening Among Cisgender Women.

Importance: Lesbian, gay, and bisexual populations face barriers accessing health care in Chicago, Illinois.

Objective: To describe the prevalence of up-to-date cervical cancer screening among lesbian, gay, and bisexual vs heterosexual cisgender women in Chicago.

Design, Setting, And Participants: This retrospective, cross-sectional, population-based study of cisgender women residing in Chicago was completed from 2020 to 2022 using data from the Healthy Chicago Survey, which is conducted annually by the Chicago Department of Public Health.

Fano cavity test and investigation of the response of the Roos chamber irradiated by proton beams in perpendicular magnetic fields up to 1 T.

. The aim of this work is to investigate the response of the Roos chamber (type 34001) irradiated by clinical proton beams in magnetic fields..

Assessing the influence of small structural modifications in simple DNA-based nanostructures on their role as drug nanocarriers.

DNA nanotechnology leverages Watson-Crick-Franklin base-pairing interactions to build complex DNA-based nanostructures (DNS). Due to DNA specific self-assembly properties, DNS can be designed with a total control of their architecture, which has been demonstrated to have an impact on the overall DNS features. Indeed, structural properties such as the shape, size and flexibility of DNS can influence their biostability as well as their ability to internalise into cells.

Experiences of Awe and Gratitude and Related Triggers Among Religious Brothers and Sisters: Findings from a Cross-Sectional Study in Germany.

A cross-sectional survey among religious brothers and sisters (n = 250) with their specific lifestyle and related spiritual practices stated moments of awe perceptions. They responded to both the Awe/Gratitude scale and to free text fields to substantiate their quantitative responses. Qualitative content analysis of their free text responses resulted in six main categories of awe triggers: (1) Nature, (2) Special Moments, (3) Transcendence Perceptions, (4) Religious practices, (5) Distinct People, and (6) Aesthetics, Art and Culture.