157 research outputs found
The analogue of grad-div stabilization in DG methods for incompressible flows: Limiting behavior and extension to tensor-product meshes
No full textSchroeder, Philipp W./0000-0001-7644-4693WOS: 000442638700037grad-div stabilization is a classical remedy in conforming mixed finite element methods for incompressible flow problems, for mitigating velocity errors that are sometimes called poor mass conservation. Such errors arise due to the relaxation of the divergence constraint in classical mixed methods, and are excited whenever the spatial discretization has to deal with comparably large and complicated pressures. In this contribution, an analogue of grad-div stabilization for Discontinuous Galerkin methods is studied. Here, the key is the penalization of the jumps of the normal velocities over facets of the triangulation, which controls the measure-valued part of the distributional divergence of the discrete velocity solution. Our contribution is twofold: first, we characterize the limit for arbitrarily large penalization parameters, which shows that the stabilized nonconforming Discontinuous Galerkin methods remain robust and accurate in this limit; second, we extend these ideas to the case of non-simplicial meshes; here, broken grad-div stabilization must be used in addition to the normal velocity jump penalization, in order to get the desired pressure robustness effect. The analysis is performed for the Stokes equations, and more complex flows and Crouzeix-Raviart elements are considered in numerical examples that also show the relevance of the theory in practical settings. (C) 2018 Elsevier B.V. All rights reserved.German Academic Exchange Service (DAAD)Deutscher Akademischer Austausch Dienst (DAAD); program "Research Grants for Doctoral Candidates and Young Academics and Scientists", 2017/18 [57299291]; National Science FoundationNational Science Foundation (NSF) [DMS1522191]; U.S. ArmyUnited States Department of Defense [65294-MA]The authors would especially like to thank Christoph Lehrenfeld for several related fruitful discussions on stabilization and hybridization and the invaluable help he provided in using the finite element library NGSolve in the context of this work. Mine Akbas acknowledges support from the German Academic Exchange Service (DAAD) with the program "Research Grants for Doctoral Candidates and Young Academics and Scientists", 2017/18 (57299291). The third author was supported by National Science Foundation grant DMS1522191 and U.S. Army grant 65294-MA
PATIENT SATISFACTION ON NURSING CARE: THE CASE OF GYNECOLOGY AND OBSTETRICS CLINICS
No full textWOS: 000475426200013Nursing care is an effective factor to allow the quality of health care services to be at a desired level. The ethical principles of justice and honesty are important for improving the quality of nursing care and patient satisfaction. This study determined satisfaction levels for nursing care of patients hospitalized in gynecology and obstetrics clinics of different types of hospitals providing health care services. This is a descriptive and cross-sectional study. The sample consisted of 420 female patients hospitalized in gynecology and obstetrics clinics. The data were collected using the "Patient Socio-demographics Form" and "Newcastle Nursing Care Satisfaction Scale." The nursing care satisfaction level of the participants according to hospital were as follows: Hospital A 70.68 +/- 15.51, Hospital B 70.65 +/- 15.17, Hospital C 65.41 +/- 16.48, Hospital D 71.39 +/- 14.66, and in total 67.2 +/- 16.13. There were statistically significant relationships between nursing satisfaction levels of participants based on the hospital, marital status, age, income level, and length of hospital stay. Satisfaction levels of the participants regarding nursing care were above average. While the satisfaction levels were similar based on hospitals, the satisfaction levels for the private hospital, training and research hospital, and university hospital were higher than that of the public hospital
Satisfação do sobre cuidados de enfermagem: o caso daas clínicas ginecológicas e obstétricas
No full textNursing care is an effective factor to allow the quality of health care services to be at a desired level. The ethical principles of justice and honesty are important for improving the quality of nursing care and patient satisfaction. This study determined satisfaction levels for nursing care of patients hospitalized in gynecology and obstetrics clinics of different types of hospitals providing health care services. This is a descriptive and cross-sectional study. The sample consisted of 420 female patients hospitalized in gynecology and obstetrics clinics. The data were collected using the “Patient Socio-demographics Form” and “Newcastle Nursing Care Satisfaction Scale.” The nursing care satisfaction level of the participants according to hospital were as follows: Hospital A 70.68±15.51, Hospital B 70.65±15.17, Hospital C 65.41±16.48, Hospital D 71.39±14.66, and in total 67.2±16.13. There were statistically significant relationships between nursing satisfaction levels of participants based on the hospital, marital status, age, income level, and length of hospital stay. Satisfaction levels of the participants regarding nursing care were above average. While the satisfaction levels were similar based on hospitals, the satisfaction levels for the private hospital, training and research hospital, and university hospital were higher than that of the public hospital.El cuidado de enfermería es un factor efectivo en lograr la calidad al nivel deseado en el servicio del cuidado de salud. Los principios éticos de justicia y honestidad son importantes para mejorar la calidad del cuidado de enfermería y la satisfacción del paciente. El presente estudio determina los niveles de satisfacción del cuidado de enfermería de pacientes hospitalizados en clínicas de obstétrica y ginecología de diferentes tipos de hospitales que proporcionan servicios de cuidado de salud. Se trata de un estudio descriptivo y transversal. La muestra consistió de 420 mujeres pacientes hospitalizadas en clínicas de obstetricia y ginecología. Los datos se recolectaron usando el “Formulario sociodemográfico de pacientes” y la “Escala de satisfacción de cuidado de enfermería de Newcastle”. Los niveles de satisfacción de cuidado de enfermería de los participantes de acuerdo a cada hospital fueron los siguientes: Hospital A 70.68±15.51, Hospital B 70.65±15.17, Hospital C 65.41±16.48, Hospital D 71.39±14.66, y el total 67.2±16. La relación entre los niveles de satisfacción del cuidado de enfermería de los pacientes basado en el hospital, estado marital, edad, nivel de salario y duración de estadía en el hospital fue estadísticamente significativa. Los niveles de satisfacción de los participantes respecto a los cuidados de enfermería se encontraron por encima del promedio. Mientras que los niveles de satisfacción eran similares basándose en hospitales, los niveles de satisfacción de los hospitales privados, de entrenamiento, investigación y universitarios fueron mayores que los de los hospitales públicos.Cuidado de enfermagem é um fator importante para propiciar que a qualidade dos serviços de cuidados à saúde estejam em um nível desejado. Os princípios éticos de justiça e honestidade são importantes para melhorar a qualidade dos cuidados de enfermagem e a satisfação dos pacientes. Este estudo determinou os níveis de satisfação para cuidados de enfermagem de pacientes hospitalizadas em clínicas ginecológicas e obstétricas de diferentes tipos de hospitais que fornecem serviços de cuidados à saúde. Este é um estudo descritivo e de corte transversal. A amostra consistiu em 420 pacientes femininas hospitalizadas em clínicas ginecológicas e obstétricas. Os dados foram coletados utilizando-se o “Formulário Sócio-Demográfico do Paciente” e a “Escala de Satisfação com Cuidados de Enfermagem de Newcastle”. O nível de satisfação dos participantes com cuidados de enfermagem de acordo com o hospital foram os seguintes: Hospital A 70.68±15.51, Hospital B 70.65±15.17, Hospital C 65.41±16.48, Hospital D 71.39±14.66, e no total 67.2±16.13. Houve relação estatisticamente significante entre níveis de satisfação com a enfermagem dos participantes com o hospital, estado civil, idade, nível de renda e tempo de hospitalização. Níveis de satisfação das participantes com respeito aos cuidados de enfermagem estiveram acima da média. Enquanto os níveis de satisfação foram similares entre os diferentes hospitais, os níveis de satisfação para os hospitais privados, hospitais de treinamento e pesquisa, e hospitais universitários foram mais altos que aqueles dos hospitais públicos
Antimicrobial Activities of Olive Oil Mill Wastewater Extracts against Selected Microorganisms
No full textDiscovering eco-friendly alternatives to synthetic chemicals has become an increasingly popular area of research. Natural products are now in the spotlight for their potential use as replacements for synthetic chemicals. To maximize the benefits of these natural products, it is important to use efficient extraction methods, especially from agroindustrial waste. Olive oil mill wastewater (OOMW) is a byproduct of the olive oil production process and is considered a pollutant; however, OOMW contains a wide range of phenolic compounds that have proven antimicrobial properties. This study investigates the extraction of these compounds from OOMW, with the aim of determining their potential antimicrobial activities against several bacterial strains and fungi, including Bacillus spizizenii, Bacillus cereus, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella aerogenes, Streptococcus uberis, Enterococcus faecalis, and Candida albicans. The OOMW extracts (OEs) were prepared by using three different solvents: ethyl acetate, ethanol, and methanol. The highest total phenolic contents (4.03 g, GAE/L) and the strongest antibacterial activity were obtained with methanol extraction. All OEs showed no antifungal activity against C. albicans. OEs, particularly methanol extracts of OOMW, can be used as bioactive substances in various industries as nutraceuticals and food ingredients, respectively
Optimization of ozone treatment of fresh-cut green leaf lettuce
No full textThe optimization of ozone treatment for fresh-cut green leaf lettuce was studied to determine the effects of ozone concentration (0.5-4.5 ppm) and exposure time (0.5-3.5 min) on Listeria monocytogenes counts and the overall visual quality of lettuce. Prior to the optimization study, the effect of temperature on the efficacy of ozone treatment was evaluated in the range of 10-26 degrees C. No significant effect of temperature on the efficacy of ozone treatment was observed. The quality and safety of lettuce samples treated at the determined optimum ozonation condition (2 ppm) were compared with the chlorinated water (100 ppm), organic acid (0.25 g/100 g citric acid plus 0.50 g/100 g ascorbic acid), and water treatments applied at 10 degrees C for 2 min. Samples were stored at 4 degrees C for 12 days. Analysis include aerobic mesophilic Count, Enterobactericeae, psychrotrophic bacteria, vitamin C, beta-carotene, and sensory quality. Ozone treatment was found to be better than the chlorine and organic acid treatments in maintaining the sensory quality. (C) 2008 Elsevier Ltd. All rights reserved
Examination of knowledge about and nursing interventions for the care of patients in pain of nurses who work at Cukurova University Medical Faculty Balcali Hospital
No full textWOS: 000258649600001PubMed ID: 18706379Pain is a concept that goes back into distant history and is something that is faced by every person in different degrees and at different times in their lives. A definition of pain, adopted by the international Association for the Study of Pain and the American Pain Society, is: "an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage." Although pain is one of the most common reasons for needing health care, it is not well understood and continues to be one of the most important health problems today. The pain experience is dynamic, and the nurse is responsible for understanding this. Nurses need to cooperate with the patient and other members of the health care team to be able to control pain. Nurses are ethically responsible for the management and easing of pain. This study was conducted to investigate what nurses know about the care of patients in pain and what nursing actions are used. There were 198 nurses working day shift at Cukurova University Balcali Hospital who were included. The data were collected using a questionnaire that described the nurses and measured the nurses' knowledge about care. The mean age of the nurses was 30-89 years, they had a mean 12.0 years of experience in the profession, 52.0% did not have experience with chronic pain, 42.4% stated that they frequently encountered patients in pain, 70.2% had received education about pain in school, 88.4% had not received education about pain outside of school and did not read about pain in journals, 88.9% used pharmacologic management, 85.4% evaluated patients' pain based on verbal statements, 96.5% knew the important points in the use of opioid analgesics, and 3% knew pain theory. As a result of this study, it is seen that nurses have inadequate knowledge about care of patients in pain and pain control methods. After evaluation of the conclusions, they will be used in education to increase the quality of the nursing care. (C) 2008 by the American Society for Pain Management Nursing
Potential use of olive oil mill wastewater for bacterial cellulose production
No full textIn this study, olive oil mill wastewater (OOMW), an important waste in the Mediterranean basin, was evaluated to produce bacterial cellulose (BC). For this purpose, the effects of different ratios of OOMW fractions (25-100%) and some additional nutrients (yeast extract, peptone and Hestrin-Schramm medium (HS) components) on BC productions were investigated. Unsupplemented OOMW medium (75% and 100%) yielded as much as BC obtained in HS medium (0.65 g/L), while enrichment of OOMW medium (%100) with yeast extract (5 g/L) and peptone (5 g/L) increased the amount of BC by 5.5 times, reaching to 5.33 g/L. In addition, produced BCs were characterized by FT-IR, TGA, XRD and SEM analyses. BC from OOMW medium (100% OOMW with supplementation) has a high thermal decomposition temperature (316.8°C), whereas it has lower crystallinity index (57%). According to the FT-IR analysis, it was observed that the components of OOMW might be absorbed by BCs. Thus, higher yield productions of BCs from OOMW media compared to BC obtained from HS medium indicate that olive oil industry wastes can be integrated into BC production for industrial applications.</p
Knowledge and approaches of nurses about pain related interventions
No full textWOS: 000458742100018Purpose: This study was conducted to determine the knowledge of nursing interventions and the concept of pain in painful patients. Materials and Methods: The descriptive study consisted of 900 nurses working in an education and research hospital and 100 nurses in the sample. The data of the study were collected using the questionnaire prepared by the researchers and questioned about the occupational and socio-demographic characteristics of the nurses and the knowledge and applications of the pain. Results: 57.0% of the nurses had chronic pain experience, 81.0% had education about the concept of pain in their undergraduate education, 65.0% did not receive in-service training related to pain and 84% did not follow any pain related publications. 41.0% of the nurses stated that often and always encountered with patients who complaints pain, 62.0% did pain diagnosis in the clinic where they were studying, and 65% did not use the pain diagnostic form, 74.0% used pharmacologic methods for pain control, 69.0% were asked whether the pain of the patient had passed after using the pain control method, 53.0% of the nurses pain diagnosis assessed by the patients and their relatives by verbal expressions, and 70.0% had knowledge of nonpharmacological methods. Conclusion: Most of the nurses made pain diagnosis, but but they did not use any pain diagnosis form in pain diagnosis. They need for information for physiological indicators of pain and factors that affect patients' pain response and about the use of placebo
Biorecovering of phenolic-rich compounds from food industry wastes
No full textIn food industry, abundant fruit/vegetable byproducts (peel, seed, etc.) have been generated and released into the environment. These wastes can be considered as a largely available, low-cost source of value-added compounds. Among these, phenolic compounds are well-known for their beneficial effects on human health. Effective extraction methodologies are required for recovery of these phenolic compounds from agri-food wastes. These extracts can be used used as natural antimicrobials in pharmacology or disinfectants in food processing plants. In this work, pomegranate peel extracts were prepared by using different solvents to obtain high amount of phenolic-rich compounds. The pomegranate peel extracts were also tested against some important food pathogens to determine their antimicrobial and antibiofilm activities. Pomegranate peel extracts having high amount of phenolic compounds had higher antimicrobial and antibiofilm activities. As a result, phenolic-rich bioactive compounds can be recovered from food industry wastes and used as natural antimicrobial and antibiofilm agents. Thus, food industry wastes, especially fruit wastes, can be integrated into the extraction process and use in food, pharmacology, cosmetic and medicine industries.
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