1,143 research outputs found
Springs, storage and sensitivity to change : groundwater in Nepal's Middle Hills
The valleys in the foothills of the Himalayas may be some of the most sensitive areas to environmental and societal changes in Asia. Changes to the Asian monsoon and increasing temperatures could lead to variations in snow melt and runoff, and forecasts of increasingly inhospitable temperatures for lowland areas of Nepal and northern India (up to 60 oC) are already leading to migration to the cooler middle-hills. The use of groundwater within these catchments (from spring flows, tube wells and indirectly through baseflow) is vital for continued secure water supply for the growing populations and increased agricultural production. However groundwater resources in these valleys are poorly characterised and the resilience of water supplies dependant on these resources largely unknown
Acceptance and commitment therapy for symptom interference in metastatic breast cancer patients: a pilot randomized trial
PURPOSE:
Breast cancer is the leading cause of cancer mortality in women worldwide. With medical advances, metastatic breast cancer (MBC) patients often live for years with many symptoms that interfere with activities. However, there is a paucity of efficacious interventions to address symptom-related suffering and functional interference. Thus, this study examined the feasibility and preliminary efficacy of telephone-based acceptance and commitment therapy (ACT) for symptom interference with functioning in MBC patients.
METHODS:
Symptomatic MBC patients (Nâ=â47) were randomly assigned to six telephone sessions of ACT or six telephone sessions of education/support. Patients completed measures of symptom interference and measures assessing the severity of pain, fatigue, sleep disturbance, depressive symptoms, and anxiety.
RESULTS:
The eligibility screening rate (64%) and high retention (83% at 8 weeks post-baseline) demonstrated feasibility. When examining within-group change, ACT participants showed decreases in symptom interference (i.e., fatigue interference and sleep-related impairment; Cohen's d rangeâ=â-â0.23 to -â0.31) at 8 and 12 weeks post-baseline, whereas education/support participants showed minimal change in these outcomes (d rangeâ=â-â0.03 to 0.07). Additionally, at 12 weeks post-baseline, ACT participants showed moderate decreases in fatigue and sleep disturbance (both dsâ=â-â0.43), whereas education/support participants showed small decreases in these outcomes (dsâ=â-â0.24 and -â0.18 for fatigue and sleep disturbance, respectively). Both the ACT and education/support groups showed reductions in depressive symptoms (dsâ=â-â0.27 and -â0.28) at 12 weeks post-baseline. Group differences in all outcomes were not statistically significant.
CONCLUSIONS:
ACT shows feasibility and promise in improving fatigue and sleep-related outcomes in MBC patients and warrants further investigation
Exercise capacity and incidence of myocardial perfusion defects after Kawasaki disease in children and adolescents
Objectives.This study evaluated exercise performance and myocardial perfusion during exercise in patients with Kawasaki disease who had a broad spectrum of residual coronary abnormalities.Background.Reports of exercise performance after Kawasaki disease have generally included a small number of patients evaluated by various protocols, frequently with incomplete data. Myocardial perfusion studies have usually been limited to those using pharmacologically induced coronary vasodilation. Therefore, to our knowledge there has not been a large study directly correlating exercise performance, electrocardiographic (ECG) changes and myocardial perfusion imaging.Methods.Forty-six patients were classified into three groups on the basis of coronary artery status: group 1 (n = 27) had no objective evidence of coronary artery lesions; group 2 (n = 11) had resolved aneurysms; group 3 (n = 8) had persistent coronary aneurysms. All patients underwent exercise testing with monitor ing of ECG changes and oxygen consumption. Single-photon emission computed tomographic imaging was performed at rest and during peak exercise using technetium-99m sestamibi.Results.Maximal oxygen consumption was within normal limits and was similar for all three groups. Five patients had mild ST segment changes at peak exercise. Two of these patients had stress-induced perfusion defects. Myocardial perfusion defects were present in 37% of patients in group 1, 63% in group 2 and 100% in group 3. Perfusion defects corresponded to the coronary artery lesion site in all but three patients.Conclusions.Maximal oxygen consumption is normal after Kawasaki disease regardless of coronary artery status. Stressinduced perfusion defects are frequent even in the absence of coronary abnormalities and are common in the absence of ST segment changes suggestive of ischemia
One-step isolation and biochemical characterization of a highlyactive plant PSII monomeric core
We describe a one-step detergent solubilization protocol for isolating a highly active form of Photosystem II (PSII) from Pisum sativum L. Detailed characterization of the preparation showed that the complex was a monomer having no light harvesting proteins attached. This core reaction centre complex had, however, a range of low molecular mass intrinsic proteins as well as the chlorophyll binding proteins CP43 and CP47 and the reaction centre proteins D1 and D2. Of particular note was the presence of a stoichiometric level of PsbW, a low molecular weight protein not present in PSII of cyanobacteria. Despite the high oxygen evolution rate, the core complex did not retain the PsbQ extrinsic protein although there was close to a full complement of PsbO and PsbR and partial level of PsbP. However, reconstitution of PsbP and PsbPQ was possible. The presence of PsbP in absence of LHCII and other chlorophyll a/b binding proteins confirms that LHCII proteins are not a strict requirement for the assembly of this extrinsic polypeptide to the PSII core in contrast with the conclusion of Caffarri et al. (2009)
Robot-assisted laparoscopic prostatectomy in a 68-year-old patient with previous heart transplantation and pelvic irradiation
We report the case of a 68-year-old man who had previously undergone heart transplantation and pelvic irradiation for Hodgkinâs lymphoma and who was under active surveillance for prostate cancer. In response to his increased prostate-specific antigen levels and elevated Gleason score, he was offered robot-assisted laparoscopic prostatectomy
Design and synthesis of dual 5-HT1A and 5-HT7 receptor ligands
5-HT and 5-HT receptors have been at the center of discussions recently due in part to their major role in the etiology of major central nervous system diseases such as depression, sleep disorders, and schizophrenia. As part of our search to identify dual targeting ligands for these receptors, we have carried out a systematic modification of a selective 5HT receptor ligand culminating in the identification of several dual 5-HT and 5-HT receptor ligands. Compound , a butyrophenone derivative of tetrahydroisoquinoline (THIQ), was identified as the most potent agent with low nanomolar binding affinities to both receptors. Interestingly, compound also displayed moderate affinity to other clinically relevant dopamine receptors. Thus, it is anticipated that compound may serve as a lead for further exploitation in our quest to identify new ligands with the potential to treat diseases of CNS origin
Theoretical studies of the historical development of the accounting discipline: a review and evidence
Many existing studies of the development of accounting thought have either been atheoretical or have adopted Kuhn's model of scientific growth. The limitations of this 35-year-old model are discussed. Four different general neo-Kuhnian models of scholarly knowledge development are reviewed and compared with reference to an analytical matrix. The models are found to be mutually consistent, with each focusing on a different aspect of development. A composite model is proposed. Based on a hand-crafted database, author co-citation analysis is used to map empirically the entire literature structure of the accounting discipline during two consecutive time periods, 1972â81 and 1982â90. The changing structure of the accounting literature is interpreted using the proposed composite model of scholarly knowledge development
Bemiparin versus low dose aspirin for management of recurrent early pregnancy losses due to antiphospholipd antibody syndrome
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