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تعداد نتایج: 2029042 فیلتر نتایج به سال:
A 60-year-old Japanese man was found to have diffuse pneumonia-like shadow in the left S10 segment on chest computed tomographic scan. Transbronchial lung biopsy yielded a pathological diagnosis of poorly differentiated adenocarcinoma; subsequently, left lower lobectomy was performed. Histopathological analysis showed that the tumor consisted solely of discohesive cells with involvement of the ...
High Internal Phase Emulsions (HIPEs) are important for a wide range of applications in the food, cosmetic, pharmaceutical and petroleum industries. If the continuous phase is polymerizable, HIPEs can be used as templates for the synthesis of highly porous polymers with potential applications as low weight structures or scaffolds in tissue engineering. HIPEs are characterized by a minimum inter...
To date, most reported quantitative structure-property relationship (QSPR) methods to predict vapor pressure rely on, at least, some empirical data, such as boiling points, critical pressures, and critical temperatures. This limits their usefulness to available chemicals and incurs the time and expense of experimentation. A model to predict vapor pressure from only computationally derived molec...
Endpoints are response variables, or outcomes, that are measured during the course of a clinical trial. I consider endpoints that are either events (e.g., death) or the time to an occurrence of an event (e.g., time to disease progression). A composite endpoint (CEP) is an endpoint that consists of a number of component endpoints, and is considered to have occurred as soon as any one of its comp...
Harvesting biomechanical energy is an important route for providing electricity to sustainably drive wearable electronics, which currently still use batteries and therefore need to be charged or replaced/disposed frequently. Here we report an approach that can continuously power wearable electronics only by human motion, realized through a triboelectric nanogenerator (TENG) with optimized mater...
During the year August 29, 1965, through August 28, 1966, weekly samples of water were taken from Linsley Pond, North Branford, Connecticut, for the purpose of as complete a geochemical survey as possible. At the same time, temperature studies were made at half-meter intervals for the column, from the surface through 14 M, using a YSI thermistor reader and thermistor accurate to at least 0.050C...
The use of descriptors based on local properties calculated at the molecular surface for QSPR models is discussed. It is suggested that descriptors should be related to the physical theory of intermolecular interactions and the relationship between established surface-based descriptors and the fundamental types of intermolecular interaction is discussed. Descriptors based on local properties th...
Twelve breast fibroadenomas were analyzed cytogenetically and only four were found to have clonal alterations. The presence of chromosomal alterations in fibroadenomas must be the consequence of the proliferating process and must not be related to the etiology of this type of lesion. In contrast, the few fibroadenomas that exhibit chromosomal alterations are likely to be those presenting a risk...
The discovery of the ob-gene product leptin in 1994 (1 –2) and the subsequent identification of grossly obese children lacking leptin (3) or its receptor (4) considerably increased the expectation of finding an effective cure for grossly obese humans. Very soon after its discovery it became evident, however, that a deficiency of leptin did not account for obesity in the large majority of patien...
BACKGROUND AND PURPOSE Paragangliomas are highly vascularized usually benign neoplasms arising from nerve tissue. Endovascular preoperative embolization is used to facilitate surgery but is often not complete, due to tiny feeding arteries not feasible for selective catheterization. Our purpose was to evaluate angiographic and clinical outcome using Onyx for percutaneous glomus tumor embolizatio...
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