Phase transformations and mechanical properties of the nitinol alloy with shape memory

We study the Ni55.8Ti44.2 alloy in the form of rods 8 mm and wires 1.5 mm in diameter. By the method of differential scanning calorimetry, we find the temperatures of phase transformations different for the rods and the wires. The stresses corresponding to the onset and termination of phase transformations at room temperature are determined. We also analyze the influence of the diameters of specimens on thetemperatures of phase transformations, deformation of behavior of the alloy, and its mechanical charac-teristics

Desafios e oportunidades em ética clínica com a implementação do Ato de Fim-da-Vida na Córeia

This paper examines the possible impacts of the Act on Decisions on Life-Sustaining Treatment for Patients in Hospice and Palliative Care or at the End of Life in Korea (Korea’s end-of-life act), legislated in 2016, on the development of hospital ethics committees and clinical ethics consultation services in South Korea. Clinical ethics in Korea has not made much progress in comparison to other subdisciplines of biomedical ethics. While the enactment of this law may give rise to beneficial clinical ethics services, it is possible that customary practices and traditional authorities in Korean society will come into conflict with the norms of clinical ethics. This paper examines how the three main agents of Korean society—family, government, and medical professionals—may clash with end-of-life stage norms in clinical ethics, thus posing obstacles to the development of hospital committees and consultation services. A brief outline of what lies ahead for the progress of clinical ethics practice is explored.Este documento examina los posibles impactos de la Ley de decisiones sobre el tratamiento de soporte vital para pacientes en hospicios y cuidados paliativos, o al final de la vida en Corea (Ley de Corea del Final de la Vida), legislada en 2016, sobre el desarrollo de comités de ética hospitalaria y servicios de consulta de ética clínica en Corea del Sur. La ética clínica en Corea no ha avanzado mucho en comparación con otras subdisciplinas de la ética biomédica. Si bien la promulgación de esta ley puede dar lugar a servicios de ética clínica beneficiosos, es posible que las prácticas tradicionales y las autoridades tradicionales en la sociedad coreana entren en conflicto con las normas de ética clínica. Este documento examina cómo los tres agentes principales de la sociedad coreana —familia, gobierno y profesionales médicos— pueden chocar con las normas de ética clínica al final de la vida, lo que plantea obstáculos para el desarrollo de comités hospitalarios y servicios de consulta. Se explora un breve resumen de lo que queda por delante para el progreso de la práctica de la ética clínica.Este artigo examina os possíveis impactos que o Ato sobre Decisões Relacionadas a Tratamento de Manutenção da Vida para Pacientes em Casas de Idosos e de Cuidados Paliativos ou ao Fim da Vida na Coréia (ato de fim da vida da Coréia), aprovado pelo legislativo em 2016, sobre o desenvolvimento de comitês de ética de hospitais e serviços de consulta sobre ética clínica na Coréia do Sul. Ética clínica na Coréia não sofreu muito progresso em comparação com outras subdisciplinas da ética biomédica. Enquanto a promulgação desta lei pode dar origem a serviços de ética clínica proveitosos, é possível que práticas usuais e autoridades tradicionais na sociedade coreana entrarão em conflito com as normas da ética clínica. Este artigo examina como os três principais agentes da sociedade coreana – família, governo e profissionais médicos – podem se chocar com normas de estágios de fim da vida em ética clínica, colocando assim obstáculos para o desenvolvimento de comitês hospitalares e serviços de consulta. Um breve esboço do que vem pela frente para o progresso da prática de ética clínica é explorado

Surface temperature of the exposed silo face as quick indicator of the decomposition process of maize silage

Silage temperature and oxygen concentration are critical parameters for controlling the silage process. Anaerobic condition with lower and stable temperature is necessary for quality silage making. However, when the silo is opened or if there are any failures (e.g. at the cover or at the walls) the anaerobic environment is changed to an aerobic state. That caused intensive decomposition process allied to increase of the temperature in the problematic silage layers. The objective of the current study is to evaluation of infrared thermography technique possibilities for measurement of surface temperature of the maize silage under conditions representative of an exposed face silo, interpretation of measured values and detection of layers and areas with intensive decomposition process

Infrared focal plane performance in the South Atlantic anomaly

Proton-induced pulse height distributions (PHD's) in Si:XX detectors were studied analytically and experimentally. In addition, a preliminary design for a flight experiment to characterize the response of Si:XX detectors to the trapped proton environment and verify PHD models was developed. PHD's were computed for two orbit altitudes for a variety of shielding configurations. Most of the proton-induced pulses have amplitudes less that about 3.5 x 10(exp 5) e-h pairs. Shielding has a small effect on the shape of the PHD's. The primary effect of shielding is to reduce the total number of pulses produced. Proton-induced PHD's in a Si:Sb focal plane array bombarded by a unidirectional 67-MeV beam were measured. The maximum pulse height recorded was 6 x 10(exp 5) pairs. The distribution had two peaks: the larger peak corresponded to 3.8 x 10(exp 5) pairs and the smaller peak to 1.2 x 10(exp 5) pairs. The maximum pulse height and the larger peak are within a factor of two of predicted values. The low-energy peak was not expected, but is believed to be an artifact of inefficient charge collection in the detector. The planned flight experiment will be conducted on a Space Shuttle flight. Lockheed's helium extended life dewar (HELD) will be used to provide the required cryogenic environment for the detector. Two bulk Si:Sb arrays and two Si:As impurity band conduction arrays will be tested. The tests will be conducted while the Space Shuttle passes through the South Atlantic Anomaly. PHD's will be recorded and responsivity changes tracked. This experiment will provide a new database on proton-induced PHD's, compare two infrared detector technologies in a space environment, and provide the data necessary to validate PHD modeling

What Shapes Information System Misuse Intention? The Role of Leadership Style and Perceived Organizational Justice

We introduce a model that examines the relationships between organizational justice, leadership style, organizational citizenry behavior, and misuse intention. We hypothesize that ethical and charismatic leadership will increase organizational citizenry behavior and subsequently reduce misuse intention, while perceived organizational injustice will increase misuse intentions. We suggest that the existence of sanctions will moderate the relationships between perceived leadership and misuse. The relationship between perceived organizational injustice and misuse intentions are moderated by organizational security awareness and the Security Education, Training and Awareness program

Evaluation of efficiency of technologies for wastewater sludge hygienisation

The paper compares the methods of hygienisation of wastewater treatment plants sludges with respect to meet legislative requirements of conditions for using the treated sludge on agricultural land. The paper draws a comparison of the experimental results between the method of hygienisation and stabilisation of the sludge through the autothermic aerobic thermophilic stabilisation (AATS) by pure oxygen and the method of sludge hygienisation by pasteurization. Results of the experiment confirm that sewage sludge treated by both assessed hygienisation technologies meets legislation requirements for application to agricultural soil.O

Assessment of apoptosis and appearance of hepatocyte growth factor in placenta at different gestational ages: A cross-sectional study

Background: Fetal growth is determined by the interaction between mother and fetus using the placental interface throughout the pregnancy. Objective: To research apoptosis and appearance of hepatocyte growth factor (HGF) in placentas of different gestational ages and to describe the anthropometrical and clinical indices of mothers and newborns. Materials and Methods: The study material was obtained from 53 human immunodeficiency virus negative pregnant women of legal age without systemic diseases. The staining of placental apoptotic cells was processed by a standard in situ cell death detection kit. The detection of HGF was provided by the ImmunoCruz goat ABC Staining System protocol sc-2023. Relative distribution of positive structures was evaluated using the semiquantitative counting method. Results: The mean rank value of the amount of HGF-containing cells (cytotrophoblasts, syncytiotrophoblasts, extravillous trophoblasts, Höfbauer cells, and cells of extraembryonic mesoderm) was 1.61 ± 0.94. Apoptotic cells (cytotrophoblasts, syncytiotrophoblasts, extravillous trophoblasts, and cells of extraembryonic mesoderm) were found in all placental samples of various gestational ages (term 13.00 ± 13.05 and preterm 27.00 ± 18.25); in general, their amount decreased with advancing gestational age of the placenta (p < 0.01). Conclusion: Weight of a placenta directly depends on the gestational age and correlates with the main fetal anthropometrical parameters (weight, length, and head and chest circumferences). The decrease in HGF-containing and apoptotic cells with advancing gestation depends on the adaptation potential of the placenta, proving the other ways of cellular disposition. Key words: Pregnancy, Placenta, Gestational age, Apoptosis, Immunohistochemistry