Quantum-State Renormalization in Semiconductor Nanoparticles.

A single photoexcited electron-hole pair within a polar semiconductor nanocrystal (SNC) alters the charge screening and shielding within it. Perturbations of the crystal lattice and of the valence and conduction bands result, and the quantum-confinement states in a SNC shift uniquely with a dependence on the states occupied by the carriers. This shifting is termed quantum-state renormalization (QSR).

Survival Outcomes and Genetic Characteristics of Resected Pancreatic Acinar Cell Carcinoma.

Background: Pancreatic acinar cell carcinoma (pACC) is a rare neoplasm of the exocrine pancreas. There is a dearth of information about tumor characteristics and patient outcomes. This study describes the clinical characteristics, genetic alterations, and survival outcomes of resected pACC.

Student and Attending Preceptor Perceptions of Longitudinal Clinic as a Surgical Education and Assessment Tool.

Introduction: As undergraduate medical education becomes increasingly longitudinal, particular attention is needed to maintain sufficient exposure to surgical disciplines. While traditional medical student clerkships are isolated 4 to 8-wk blocks on a single service, one unique adjunct to the traditional clerkship model is the continuity clinic (CC): a weekly longitudinal requirement that occurs either during the traditional clerkship or following clerkships while conducting independent research. This study compares attending surgeon and medical student perceptions of important characteristics in evaluating a student in CC and the perceived utility of this experience in assessment and preparation for subinternships.

How Attachment to Dogs and to Other Humans Relate to Mental Health.

It is unclear how pet ownership is related to mental health, with some previous research suggesting pet owners have better mental health, while other research suggests they have worse mental health. Some researchers have suggested that it may be more useful to investigate the bond people feel with their pets and how this may impact mental health; however, this too has led to mixed results. This study examined how owners' attachment to their dogs was associated with mental health and how this compared to their attachment relationships with other humans in a sample of 607 dog owners.