Search results

Filter

Filetype

Your search for "*" yielded 530040 hits

Management of vertebral stenosis complicated by presence of acute thrombus

A 44-year-old male presented with multiple punctate acute infarcts of the vertebrobasilar circulation and a computed tomographic angiogram showing stenosis of the right vertebral origin. A digital subtraction angiogram demonstrated a new intraluminal filling defect at the origin of the stenotic vertebral artery where antegrade flow was maintained. This filling defect was accepted to be an acute th

Acute bilateral cerebellar infarction in the territory of the medial branches of posterior inferior cerebellar arteries

The most frequent type of cerebellar infarcts involved the posterior inferior cerebellar artery (PICA) and superior cerebellar artery territories but bilateral involvement of lateral or medial branches of PICA is extremely rare. In this report, we present a 55-year-old male who admitted to hospital with vomiting, nausea and dizziness. On examination left-sided hemiparesia and ataxic gait were dete

Primary angiitis of the central nervous system and silent cortical hemorrhages

Primary angiitis of the CNS is histopathologically characterized by ischemic lesions and small petechial hemorrhages. Unlike CT or conventional MR imaging, gradient-echo MR imaging depicts these chronic petechial hemorrhages. We herein report the case of biopsy-proved primary angiitis of the CNS in a 42-year-old man; whom gradient-echo MR imaging revealed multiple petechial hemorrhages in the cort

A Multidisciplinary Approach for Clarifying the Recharge Processes and Origin of Saline Water in the Semi-Arid Punata Alluvial fan in Bolivia

The analysis of stable isotopes assisted in identifying that groundwater in the Punata alluvial fan is mainly recharged by heavy flash floods, and the recharge from rainfall is of less importance. In addition, the hydrochemical analysis identified the Pucara River as the main source of recharge. Other streams in the north and northwest of the fan do not seem to contribute to the recharge. The hydr

An Area-Efficient On-Chip Memory System for Massive MIMO Using Channel Data Compression

Massive multiple-input-multiple-output has proven to deliver improvements in both spectral and transmitted energy efficiency. However, these improvements come at the cost of critical design challenges for the hardware implementation due to the huge amount of data that has to be processed immediately, especially the storage of large channel state information (CSI) matrices. This paper presents an o

The GTPase domain of gamma-tubulin is required for normal mitochondrial function and spatial organization

In the cell, γ-tubulin establishes a cellular network of threads named the γ-string meshwork. However, the functions of this meshwork remain to be determined. We investigated the traits of the meshwork and show that γ-strings have the ability to connect the cytoplasm and the mitochondrial DNA together. We also show that γ-tubulin has a role in the maintenance of the mitochondrial network and functIn the cell, γ-tubulin establishes a cellular network of threads named the γ-string meshwork. However, the functions of this meshwork remain to be determined. We investigated the traits of the meshwork and show that γ-strings have the ability to connect the cytoplasm and the mitochondrial DNA together. We also show that γ-tubulin has a role in the maintenance of the mitochondrial network and funct

The distinctive germinal center phase of IgE+ B lymphocytes limits their contribution to the classical memory response

The mechanisms involved in the maintenance of memory IgE responses are poorly understood, and the role played by germinal center (GC) IgE(+) cells in memory responses is particularly unclear. IgE(+) B cell differentiation is characterized by a transient GC phase, a bias toward the plasma cell (PC) fate, and dependence on sequential switching for the production of high-affinity IgE. We show here th

The neuropeptide substance P is a critical mediator of burn-induced acute lung injury

The classical tachykinin substance P (SP) has numerous potent neuroimmunomodulatory effects on all kinds of airway functions. Belonging to a class of neuromediators targeting not only residential cells but also inflammatory cells, studying SP provides important information on the bidirectional linkage between how neural function affects inflammatory events and, in turn, how inflammatory responses

‘If the change is going to happen it's not by us' : Exploring the role of NGOs in the politicization of Ugandan agriculture

Sustainable agricultural development that prioritizes the needs and respects the rights of smallholder farmers is widely framed as a societal goal by both national governments and international institutions. However, in many places this remains an elusive goal, not least in sub-Saharan Africa. The past decades have seen new types of rural social movements emerge, demanding socially just and enviro

Protease activity of Blastocystis hominis

Parasite-derived proteases are important for the parasite life cycle and the pathogenesis of the disease they produce. Proteases of intestinal protozoan parasite Blastocystis hominis were studied for the first time with azocasein assays and gelatin SDS-PAGE analysis. Parasitic lysates were found to have high protease activity and nine protease bands of low (20-33 kDa) and high (44-75 kDa) molecula

Goniometer measurement and computer analysis of wrist angles and movements applied to occupational repetitive work

In epidemiological studies of occupational musculoskeletal disorders there is a need for quantitative exposure measurements of the physical work load. In studies of neck and upper limb disorders the so-called cumulative trauma disorders (CTDs), in particular the carpal tunnel syndrome, the positions and movements of the wrist are of special interest. A biaxial flexible electrogoniometer was used t