Magnetization dynamics in magnonic structures with different geometries: interfaces, notches and waveguides

The discovery of ultrafast magnetization dynamics 20 years ago has led to a broad variety of experimental techniques to explore phenomena in magnetic materials with high temporal resolution. In the current article we present a study dealing with broadband excitation of spin-wave packets at different magnonic crystal continuous magnetic film interfaces. Similar to protected conducting states on the surfaces of topological band insulators, these interfaces exhibit surface spin-wave modes that propagate out of the crystal into the continuous film. The propagation distance depends on the direction of the applied magnetic field as well as the surface geometry of the crystal.

Breast cancer: education, counseling, and adjustment--a pilot study

The feasibility of a randomized clinical trial to implement and compare the effectiveness of three components of an intervention for women with breast cancer and their partners was tested. The intervention components, standardized education by videotape (SE), telephone counseling (TC), and education with telephone counseling (SE+TC), were designed with a complementary approach to disease management of breast cancer at each of four phases of the breast cancer experience: diagnostic, postsurgery, adjuvant therapy, and ongoing recovery. A standardized Telephone Counseling Training Manual was developed. A nonprobability sample of 12 patient-partner pairs was accrued. Four pairs were randomly assigned to each of the three intervention components. A set of questionnaires was completed by each patient and partner at baseline and following each intervention for assessment of emotional, physical, and social adjustment, and perceived support. Attrition was minimal and return rate for the completed questionnaires at all five data-collection points was high. Validation of the SE and the TC, one of the objectives, was by data from the preliminary descriptive study (Hoskins, 1990-1994), pretests and posttests for standardized education, audiotapes for each phase-specific telephone counseling session, and evaluation forms for each intervention session. The positive findings included significant changes from pre- to postmeasurement in patients' and partners' scores for the standardized education in each of the four phases. Even with the limited statistical power, the effects were marked, lending support for a full-scale randomized clinical trial, to understand better the relative treatment efficacy and differential benefit of one or some interventions over others.

Implementing guidelines for cancer pain management: results of a randomized controlled clinical trial

PURPOSE

Pain and symptom management is an integral part of the clinical practice of oncology. A number of guidelines have been developed to assist the clinician in optimizing comfort care. We implemented clinical guidelines for cancer pain management in the community setting and evaluated whether these guidelines improved care.

PATIENTS AND METHODS

Eighty-one cancer patients, aged 37 to 76 years, were enrolled onto a prospective, longitudinal, randomized controlled study from the outpatient clinic settings of 26 western Washington-area medical oncologists. A multilevel treatment algorithm based on the Agency for Health Care Policy and Research Guidelines for Cancer Pain Management was compared with standard-practice (control) pain and symptom management therapies used by community oncologists. The primary outcome of interest was pain (Brief Pain Inventory); secondary outcomes of interest were all other symptoms (Memorial Symptom Assessment Scale) and quality of life (Functional Assessment of Cancer Therapy Scale).

RESULTS

Patients randomized to the pain algorithm group achieved a statistically significant reduction in usual pain intensity, measured as slope scores, when compared with standard community practice (P < .02). Concurrent chemotherapy and patient adherence to treatment were significant mediators of worst pain. There were no significant differences in other symptoms or quality of life between the two treatment groups.

CONCLUSION

This guideline implementation study supports the use of algorithmic decision making in the management of cancer pain. These findings suggest that comprehensive pain assessment and evidence-based analgesic decision-making processes do enhance usual pain outcomes.