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Nuclear Security research is an established subdiscipline in security studies. According to some authors is this field of research currently split into two groups of scientists - the "political scientists" and "historians" - who employ widely different approaches to research of the subject and communicate with each other on a minimal basis. This master thesis uses tools of bibliometric citational analysis to validate the existence of this gap on the level of academic citations. The author analyses this phenomenon on the dataset based on the data from the database Scopus. Results of the research bring new insights into the citational structure of set subdiscipline, which shows that the presumed gap between two supposedly not communicating groups does not appear on the level citations.

Mass-selected CmHn2+ dications of medium size (m = 6-14, n = 6-10) undergo bond-forming reactions in the presence of acetylene with Cm+2Hn2+ + H2 as the major product channel. These unprecedented reactions of organic dications offer a feasible route for the formation of polycyclic aromatic hydrocarbons under extreme conditions, such as in interstellar clouds.

Motivated by recent studies of holographic complexity, we examine the question of circuit complexity in quantum field theory. We provide a quantum circuit model for the preparation of Gaussian states, in particular the ground state, in a free scalar field theory for general dimensions. Applying the geometric approach of Nielsen to this quantum circuit model, the complexity of the state becomes the length of the shortest geodesic in the space of circuits. We compare the complexity of the ground state of the free scalar field to the analogous results from holographic complexity, and find some surprising similarities. Corrected typo in eqs. (1.1) and (3.35). Added footnote on pg. 33, and additional references. Author name change

ABSTRACT Low-mass models of M-dwarfs that undergo the convective kissing instability fluctuate in luminosity and temperature resulting in a gap in the main sequence that is observed in the Gaia data. During this instability, the models have repeated periods of full convection where the material is mixed throughout the model. Stellar evolution models are performed using mesa with varying amounts of convective overshooting and semi-convection. We find that the amplitude and intensity of the instability is reduced with increasing amounts of overshooting but sustained when semi-convection is present. This is reflected in the loops in the evolutionary tracks in the Hertzsprung–Russell diagram. The surface abundances of 1H, 3He, 4He, 12C, 14N, and 16O increase or decrease over time due to the convective boundary, however the relative abundance changes are very small and not likely observable. The mass and magnitude values from the models are assigned to a synthetic population of stars from the mass–magnitude relation to create colour–magnitude diagrams, which reproduce the M-dwarf gap as a large indent into the blueward edge of the main sequence (MS). This is featured in the luminosity function as a small peak and dip. The width of the MS decreases over time along with the difference in width between the MS at masses higher and lower than the instability. The parallel offset and relative angle between the upper and lower parts of the MS also change with time along with the mass–magnitude relation. Potential age-dating methods for single stars and stellar populations are described.

In the theoretical part of the thesis we deal with the examination, which is the most widespread in the eye department, both on the inpatient ward and the ambulances that are parts of the ophthalmology department. We deal with the characteristic work of a nurse at the eye department, including nursing diagnoses and problems which nurses may meet in the eye department. As an example, we also mention different types of eye ambulances. In the research part of the thesis we have set two objectives. The first objective was to determine the specifics of nursing care before an examination at the eye department. The second objective was to determine the specifics of nursing care after the examination at the eye department. For these targets we have appropriately chosen two research questions, we have worked with during the process of this thesis. The first research question was, what are the specifics of nursing care before an eye test. The second question was, what are the specifics of nursing care after an eye test. For research inquiries of the thesis, we chose qualitative research. We have prepared semi-structured interview. Our respondents were nurses working at the eye department in a hospital in southern Bohemia and in a hospital in the Highlands and interviews were conducted with their consent. From the questions and answers it was created 6 categorization groups, some of which have subgroups. The research shows that the work of nurses with patients at the eye department has some specifics before and after the eye examination. For the first set goal, what are the specifics of nursing care before examination at the eye department, the responses of the sisters showed that before examination sisters are trying to get information from patients. We claim that this is an anamnesis, although each sister had mentioned something else. All agreed on the question about the glasses worn by the patient, as well as on questions about vision problems and eye surgeries. More than half of the nurses ask a patient about amblyopia and eye injuries. Before the examination sisters pay attention to proper communication with the patient and co-operation with him. They also mentioned communication with a doctor before a procedure. All nurses reported that they use local eye drops on patients or other medications depending on the type of examination and a doctor's prescription. Half of the nurses agreed on the examination of visual acuity at distance and on flushing the eye before the examination. Before the examination, all the sisters are preparing the necessary instruments, to which they ranked eye drops, squares and kidney tray. They did not forget the instrumentation, that all of them must turn on before the examination and sterilize. All the sisters also talks about the environment for the eye examination. In this issue, about preparing the environment for the examination, all replied that the doctor examines a patient in the daylight or in the dark room. The preparation of a patient is different before each examination. A nurse prepares a patient According to the type of examination. For the second goal, what are the specifics of nursing care after the examination in the department, research suggests that, again, nurses spend a great deal of time on communicating with patients. To the issue of communication they put also the techniques of guiding of a patient, and also his accompaniment. They are devoted to assist patients in activities that patients after an examination cannot do themselves. In the greatest degree the nurses perform the prescriptions ordered by the doctor. All nurses agreed that patients should be monitored for an allergic reaction after examination. Half of the nurses monitor the overall condition of the patient after the examination. Each sister disinfects instrumentation for examination at the eye department. All nurses also agreed that after the examination the doctor should inform the patient about the limitations connect

We present selected known results and some new observations, involving Gurariĭ Spaces. A Banach space is Gurariĭ Spaces if it has certain natural extension property for almost isometric embeddings of finite-dimensional spaces. Deleting the word \almost", we get the notion of a strong Gurariĭ Spaces. There exists a unique (up to isometry) separable Gurariĭ Spaces, however strong Gurariĭ Spaces cannot be separable. The structure of the class of non-separable Gurariĭ Spaces seems to be not very well understood. We discuss some of their properties and state some open questions. In particular, we characterize nonseparable Gurariĭ Spaces in terms of skeletons of separable subspaces, we construct a nonseparable Gurariĭ Spaces with a projectional resolution of the identity and we show that no strong Gurariĭ Spaces can be weakly Lindelӧf determined. Research of the first author is supported by the ESF Human Capital Operational Program grant 6/1/8.2.1./POKL/2009. peerReviewed

A two-year-old ball python with a submandibular mass was evaluated. Fine needle aspiration resulted in debris containing purulent materials and bacterial cells on cytology. Radiography demonstrated multi-focal radiopaque lesions in the mass, which were suspected to be mineralization; there was an absence of mandibular invasion or lung involvement. Gross examination of the surgically excised mass revealed a multi-nodular, well-circumscribed lesion with purulent material. The postoperative recovery was uneventful. The histopathological examination followed by immunohistochemistry analysis gave a diagnosis of leiomyosarcoma. As tumors containing purulent materials can be confused with an abscess, diagnostic confirmation with various diagnostical tools should be considered.