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Pattern Consisting (pattern + consisting)

Distribution by Scientific Domains

Medical Sciences	50%

Selected Abstracts

Vascular anatomy of the developing medaka, Oryzias latipes: A complementary fish model for cardiovascular research on vertebrates

DEVELOPMENTAL DYNAMICS, Issue 3 2006
Misato Fujita
Abstract The zebrafish has become a very useful vertebrate model for cardiovascular research, but detailed morphogenetic studies have revealed that it differs from mammals in certain aspects of the primary circulatory system, in particular, the early vitelline circulation. We searched for another teleost species that might serve as a complementary model for the formation of these early primary vessels. Here (and online at http://www.shigen.nig.ac.jp/medaka/atlas/), we present a detailed characterization of the vascular anatomy of the developing medaka embryo from the stage 24 (1 day 20 hr) through stage 30 (3 days 10 hr). Three-dimensional images using confocal microangiography show that the medaka, Oryzias latipes, follows the common embryonic circulatory pattern consisting of ventral aorta, aortic arches, dorsal aorta, transverse vessels, vitelline capillary plexus, and marginal veins. The medaka, thus, may serve as a valuable model system for genetic analysis of the primary vasculature of vertebrates. Developmental Dynamics 235:734,746, 2006. © 2006 Wiley-Liss, Inc. [source]

Fine-needle aspiration cytology of metastatic nasopharyngeal carcinoma

DIAGNOSTIC CYTOPATHOLOGY, Issue 4 2005
José M. Viguer M.D.
Abstract Cytological features of nasopharyngeal carcinoma (NPC) were reviewed in an attempt to select cytological criteria that permit a specific recognition of metastases. For this purpose, 54 fine-needle aspiration (FNA) procedures from 43 patients with NPC were analyzed. Thirty-two (59.3%) procedures were performed before the histological diagnosis. In 25 (46.3%) procedures, smears showed many neoplastic single cells, clusters, and abundant lymphoid cells (mixed pattern). A dissociated (single cell) pattern consisting of individual neoplastic and lymphoid cells was seen in 18 (33.3%) cases. Finally, 11 (20.4%) cases showed cohesive epithelial clusters (cohesive pattern) without relevant cellular dissociation or lymphoid cells. Squamous-cell differentiation was seen in three of these cases. Most single neoplastic cells presented as large, pleomorphic naked nuclei. Other interesting findings were granulomas (n = 3), prominent eosinophilic infiltrates (n = 4), and suppurative changes (n = 5). In most smears with mixed and dissociated patterns, a nasopharyngeal origin could be suggested. On the contrary, those smears with a cohesive pattern were indistinguishable from other head and neck carcinomas. The presence (on cervical lymph nodes) of a dissociated or mixed (single cells and groups) architectural pattern of large, anaplastic cells and naked nuclei accompanied by an abundant lymphoid component is highly suggestive of undifferentiated NPC. Cytology offers a rapid diagnosis, establishes the necessity of a complete cavum examination, and helps in avoiding unnecessary and harmful biopsies. Diagn. Cytopathol. 2005;32:233,237. © 2005 Wiley-Liss, Inc. [source]

Diffusion-Controlled, Self-Organized Growth of Symmetric Wrinkling Patterns

ADVANCED MATERIALS, Issue 13 2009
Jun Young Chung
Symmetric instability patterns in the UV-ozone crosslinked surface of a polystyrene film grow radially outward from local defect sites in the presence of solvent vapor. The diffusion kinetics of the solvent governs the pattern morphology by establishing stress fields that favor the orientation of wrinkles in a dendritic-like spoke pattern (left) or in a target pattern consisting of concentric rings (right). [source]

Disaggregating climatic trends by classification of circulation patterns

INTERNATIONAL JOURNAL OF CLIMATOLOGY, Issue 2 2001
Radan Huth
Abstract The trends in occurrence frequencies of circulation types over Europe and in nine climate variables in the Czech Republic conditioned by the types are examined for period 1949,1980. The circulation types are determined by an objective procedure from daily 500 hPa heights. Both in summer and winter, anticyclonic types have become more frequent at the expense of cyclonic types. The circulation changes are shown to be unrelated to the trends in surface climate elements in summer, whereas in winter, trends in circulation explain a part of the observed warming and strengthening of southerly winds. The trends in climate elements are not uniform among circulation types. In summer, the trend pattern consisting of decreasing maximum and daily mean temperatures, daily temperature range (DTR) and sunshine duration, and increasing cloudiness and relative humidity is observed under the cyclonic types and the types with a well-pronounced jet, but is missing under types with a blocking anticyclone over Europe. Two possible mechanisms causing this trend pattern are proposed: increasing cloudiness, and a process responsible for the reduction of sunshine without a concurrent increase of cloudiness. The latter mechanism can possibly be identified with increasing aerosol concentrations. In winter, the degree of warming is governed by changes in zonal wind. The mechanism of change in DTR seems to vary with elevation: at the lowland station (Prague-Klementinum), the increase in DTR is related to the warming trend, and consequently with zonal wind changes, while at the mountain station (Mile,ovka), the increase in DTR reflects the increase in precipitating clouds. The changes in DTR are related much more to mid-tropospheric circulation than to cloud cover in summer, whereas in winter, cloud cover plays a more important role in affecting DTR trends. Copyright © 2001 Royal Meteorological Society [source]

Managing the self: living with an indwelling urinary catheter

JOURNAL OF CLINICAL NURSING, Issue 7b 2007
Debbie Kralik MN
Aims., This paper reports the findings of a study that aimed to understand the perspectives of community dwelling adults' who lived with a permanently indwelling urinary catheter. The objectives of the research were to: reveal the participants' perspective of living in the community with a permanent indwelling urinary catheter, raise awareness of the experiences of catheterized men and women and to inform community nursing practice. Background., Catheter care is a common nursing intervention. Clinical Nurse Consultants (CNCs) with a focus on continence drove this inquiry because it was believed that Community Nurses may underestimate the impact that a permanently indwelling catheter may have on peoples' lives. Design., Structured interviews were undertaken with twelve men and nine women (n = 21), aged between 24 and 82 years and who had a permanently indwelling catheter (either urethral or supra pubic) for longer than six months. Analysis of the interview transcripts was a collaboration between the researchers and clinicians. Results., The most significant finding was that participants wanted to learn urinary catheter self-care as this allowed them to take control and gave relevance to their daily life. Data revealed a learning pattern consisting of seven interrelated themes as people have learned to self-manage: (i) resisting the intrusion of a catheter, (ii) reckoning with the need for a catheter, (iii) being vigilant for signs of problems, (iv) reconciling between the needs of self and others, (v) reclaiming life, (vi) managing self-care, and (vii) taking control. Conclusions., We do not suggest that people undergo a straightforward path toward catheter self-care, rather, that the seven interactive themes we have identified may be useful for observation in nursing practice whilst sensitizing nurses to clients' experiences of living with a catheter. Relevance to clinical practice., Promoting self-care of a catheter is not simply about educating clients about their condition or giving them relevant information. It is intrinsically a learning process, observing responses to every day events, such as the identification of the different sounds and sensations that may alert the individual to a full catheter bag, urine that has stopped flowing or signs of impending infection. [source]

Gliosarcoma with chondroid and osseous differentiation

NEUROPATHOLOGY, Issue 1 2007
Jens Schittenhelm
We present the case of a 65-year-old woman with a short-term history of cognitive decline and neuropsychiatric symptoms. Neuroradiological examinations revealed a large left temporo-occipital cystic and calcified tumor mass measuring 6 cm in diameter, which was suspicious for an oligodendroglioma or a choroid plexus carcinoma. Neuropathological investigations finally revealed a gliosarcoma with extensive mesenchymal differentiation. The tumor demonstrated a biphasic pattern consisting of focal anaplastic glial components with vascular proliferation and necrosis. Adjacent sarcomatous tissue displayed pleomorphic fibroblastic cells surrounding metaplastic cartilage and osseous formation. Accounting for only approximately 2% of glioblastomas, gliosarcomas represent a rare entity of intrinsic CNS neoplasms. Exceedingly rare, the mesenchymal part of the gliosarcoma undergoes metaplastic transformation. Interestingly, in our case, the tumor exhibited features of both cartilaginous and osseous differentiation and multifocally showed a sharp transformation zone between highly malignant gliosarcomatous tumor areas and well-differentiated non-proliferative metaplastic regions. [source]