Perceptions of an older patient on the role of the family doctor in health promotion : a qualitative case study

Introduction: Health promotion and disease prevention are important aspects of primary health care. However, limited data are available concerning the opinions of older patients towards the respective services offered by family doctors. The aim of the present study was to evaluate an older patient's perception of the role of the family doctor in promoting his health, and identify those components that are difficult to examine in quantitative research. Methods: A qualitative case study of an 80-year-old man using an in-depth interview was carried out. The interview transcript was analyzed thematically. Our patient was an 80-year-old university-educated man, with stable social and financial circumstances, living with his wife. He had retired early on grounds of ill health (tuberculosis) and had received a disability pension prior to formal retirement. At the time of the interview, his medical problems included mild prostatic hypertrophy, scoliosis and hypertension. He considered his health status to be satisfactory. He had changed family doctor five years prior to the interview, as he had been dissatisfied with the care provided. Results: We found that our patient expected the family doctor to be aware of, and to discuss, the following issues: physical activity, diet, management of stress and mental health, use of alcohol and tobacco, personal hygiene, health screening, use of medication, and social activity. At the same time, our patient perceived the doctor's role as supplementary to his own in terms of the appraisal and maintenance of his health. Conclusions: Our findings provide evidence of what is important in the promotion of health among older people

Core Formation by a Population of Massive Remnants

Core radii of globular clusters in the Large and Small Magellanic Clouds show an increasing trend with age. We propose that this trend is a dynamical effect resulting from the accumulation of massive stars and stellar-mass black holes at the cluster centers. The black holes are remnants of stars with initial masses exceeding 20-25 solar masses; as their orbits decay by dynamical friction, they heat the stellar background and create a core. Using analytical estimates and N-body experiments, we show that the sizes of the cores so produced and their growth rates are consistent with what is observed. We propose that this mechanism is responsible for the formation of cores in all globular clusters and possibly in other systems as well.Comment: 5 page

Evaluation of effectiveness of pharmacological treatment in pelvic congestion syndrome

Pelvic congestion syndrome (PCS) is a pain syndrome characterized by positional pelvic pain and is associated with pelvic and vulvar varicosities as well as symptoms of dyspareunia and postcoital pain. Since the etiology of PCS is complex, the treatment should be individualized. Despite both pharmacological and interventional methods being used, there is significant predominance of minimally invasive therapies e.g. embolization. The study considers the answer to the question of whether pharmacological therapy is altogether effective. Using a combination of keywords, a PubMed search was performed for the years 1987–2022. The relevant articles were appointed and included in this narrative review. Despite the multitude of alternatives for pharmacological treatment, the systemic side effects of the medications used, as well as the interactions between drugs, affect patients’ compliance and persistence. Furthermore, the quality of the currently existing evidence, considering the efficacy of the given substances, is low. Because of the adverse effects and thus the limited drug administration period, there is currently insufficient research on long-term effectiveness of the PCS pharmacological treatment. Therefore, prospective, comparative studies with larger patient population sizes are necessary to provide the possibility of efficient pharmacological therapy

Abstract platforms of computation

Computational formalisms have been pushing the boundaries of the field of computing for the last 80 years and much debate has surrounded what computing entails; what it is, and what it is not. This paper seeks to explore the boundaries of the ideas of computation and provide a framework for enabling a constructive discussion of computational ideas. First, a review of computing is given, ranging from Turing Machines to interactive computing. Then, a variety of natural physical systems are considered for their computational qualities. From this exploration, a framework is presented under which all dynamical systems can be considered as instances of the class of abstract computational platforms. An abstract computational platform is defined by both its intrinsic dynamics and how it allows computation that is meaningful to an external agent through the configuration of constraints upon those dynamics. It is asserted that a platform’s computational expressiveness is directly related to the freedom with which constraints can be placed. Finally, the requirements for a formal constraint description language are considered and it is proposed that Abstract State Machines may provide a reasonable basis for such a language

Experimental investigation of mid-infrared laser action from DY3+ doped fluorozirconate fiber

Efficient continuous-wave laser operation at 2.982 μm is achieved with a Dy3:fluoride fiber pumped using an inhouse-built 1.1 μm ytterbium (III) fiber laser. The laser output power reached is 554 mW, with a maximum slope efficiency of 18% with respect to the launched pump power. Additionally, the measured spontaneous luminescence within the visible wavelength range, under 1.1 μm pumping, is presented and attributed to excited state absorption (ESA). The influence of the ESA on the laser performance is discussed. The results confirm that high output powers from Dy: fluoride fiber laser pumped at 1.1 μm are possible

Experimental photoluminescence and lifetimes at wavelengths including beyond 7 microns in Sm3+-doped selenide-chalcogenide glass fibers

1000 ppmw Sm3+-doped Ge19.4Sb9.7Se67.9Ga3 atomic % chalcogenide bulk glass and unstructured fiber are prepared. Near- and mid-infrared absorption spectra of the bulk glass reveal Sm3+ electronic absorption bands, and extrinsic vibrational absorption bands, due to host impurities. Fiber photoluminescence, centred at 3.75 μm and 7.25 μm, is measured when pumping at either 1300 or 1470 nm. Pumping at 1470 nm enables the photoluminescent lifetime at 7.3 μm to be measured for the first time which was ~100 μm. This is the longest to date, experimentally observed lifetime in the 6.5-9 μm wavelength-range of a lanthanide-doped chalcogenide glass fiber