178,779 research outputs found
Hydrocephalus following bilateral jugular venous thrombosis in a child: Case report and review of the literature
No full textHydrocephalus resulting from bilateral thrombosis of the jugular veins has been rarely described in the literature. We report the case of an 18-month-old girl who was diagnosed with this condition following total parenteral nutrition. We also review the literature relevant to this subject and discuss the pathophysiology of hydrocephalus in the setting of bilateral jugular venous thrombosis. Copyright © 2008 S. Karger AG.BELCASTRO S, 1990, JPEN-PARENTER ENTER, V14, P31, DOI 10.1177-014860719001400131; BERING EA, 1959, ARCH NEURO PSYCHIATR, V81, P693; FONKALSRUD EW, 1982, SURG GYNECOL OBSTET, V154, P189; HAAR FL, 1975, J NEUROSURG, V42, P597, DOI 10.3171-jns.1975.42.5.0597; HRUSZKEWYCZ V, 1991, INFECT CONT HOSP EP, V12, P544; Karmazyn B, 2002, PEDIATR RADIOL, V32, P806, DOI 10.1007-s00247-002-0770-z; Kollar CD, 2001, CHILD NERV SYST, V17, P117, DOI 10.1007-s003810000269; LOKICH JJ, 1985, J CLIN ONCOL, V3, P710; MACTIER H, 1986, ARCH DIS CHILD, V61, P449; McLaughlin JF, 1997, CHILD NERV SYST, V13, P59, DOI 10.1007-s003810050042; MEHTA S, 1992, J PEDIATR SURG, V27, P18, DOI 10.1016-0022-3468(92)90095-O; NEWMAN LJ, 1980, J PEDIATR SURG, V15, P215, DOI 10.1016-S0022-3468(80)80026-1; OLIVERO WC, 1988, PEDIATR NEUROSCI, V14, P196, DOI 10.1159-000120388; PULJIC S, 1978, NEURORADIOLOGY, V16, P76; REKATE HL, 1994, PEDIATR NEUROSURG, V21, P248, DOI 10.1159-000120845; SADIQ HF, 1987, CRIT CARE MED, V15, P47, DOI 10.1097-00003246-198701000-00011; SAINTEROSE C, 1984, J NEUROSURG, V60, P727, DOI 10.3171-jns.1984.60.4.0727; STEWART DR, 1975, J PEDIATR SURG, V10, P771, DOI 10.1016-0022-3468(75)90383-8; WU XR, 1982, BRAIN DEV-JPN, V4, P39722
Immigration and Human Development: Evidence from Lebanon
No full textThis paper takes Lebanon as a case study to examine the relationship between human development and immigration. It examines this issue from both ends: the sending and the receiving countries. The author suggests that by developing the concept of a diasporic civil society and a diasporic public sphere, a significant aspect of the relationship between human development and immigration is illuminated especially at the level of political, social and cultural capitals. The paper also argues that the double impact of the home country and that of destination has a lot to say about the influence of immigration on human development in Lebanon. In examining Australia as a destination country, the paper shows the particular impact that globalisation and September 11 have lately had on the capacity of the Lebanese migrants for human development. Finally, the paper concludes by showing the extent to which the diasporic civil society compensates for the ‘negligent’ character of the Lebanese state in the context of human development.Lebanese diaspora, human development, diasporic civil society, diasporic public sphere, economic and social capitals
MR imaging findings in autosomal recessive hereditary spastic paraplegia
No full textBACKGROUND AND PURPOSE: Hereditary spastic paraplegia (HSP) is a disorder characterized by degeneration of the corticospinal tracts and posterior column of the spinal cord. Previously described radiologic findings included nonspecific brain abnormalities such as brain atrophy and white matter lesions, as well as atrophy of the spinal cord. In our study, we aimed to better characterize brain and spine MR imaging findings in a series of patients with HSP. MATERIALS AND METHODS: Nine patients from 4 different Lebanese families with the autosomal recessive form of HSP were included in the study. All patients underwent brain and whole-spine MR imaging. We assessed the presence of white matter abnormalities mainly along the corticospinal tracts, brain atrophy, thinning of the corpus callosum, and the presence of spinal cord atrophy or abnormal signal intensity. RESULTS: Imaging revealed mild brain atrophy (44percent), atrophy of the corpus callosum (55percent), white matter lesions (67percent), abnormal T2 high signal intensity in the posterior limb of the internal capsule (55percent), and mild spinal cord atrophy (33percent). CONCLUSIONS: The MR imaging findings of HSP are nonspecific and variable; however, the most prominent features include atrophy of the corpus callosum, T2 signal intensity in the posterior limb of the internal capsule, and spinal cord atrophy.Alber B, 2005, J NEUROL SCI, V236, P9, DOI 10.1016-j.jns.2005.03.040; Auer-Grumbach M, 1999, J NEUROL, V246, P556, DOI 10.1007-s004150050403; BRUYN RPM, 1992, CLIN NEUROL NEUROSUR, V94, pS16; CAMBI F, 1995, ARCH NEUROL-CHICAGO, V52, P665; Casali C, 2004, NEUROLOGY, V62, P262; Coutinho P, 1999, ARCH NEUROL-CHICAGO, V56, P943, DOI 10.1001-archneur.56.8.943; Dreha-Kulaczewski S, 2006, NEURORADIOLOGY, V48, P893, DOI 10.1007-s00234-006-0148-2; DURR A, 1994, NEUROLOGY, V44, P1274; FERRER I, 1995, NEUROPATH APPL NEURO, V21, P255, DOI 10.1111-j.1365-2990.1995.tb01057.x; GILMAN S, 2002, MANTER GATZS ESSENTI, P181; GOLDBLATT J, 1989, CLIN GENET, V35, P116; HARDING AE, 1984, HEREDITARY ATAXIAS R, P191; Hedera P, 2005, NEURORADIOLOGY, V47, P730, DOI 10.1007-s00234-005-1415-3; HOURANI R, 2008, EUR J RADIOL EXTRA, V65, P37, DOI 10.1016-j.ejrex.2007.11.009; Kassubek J, 2006, EUR J NEUROL, V13, P880, DOI 10.1111-j.1468-1331.2006.01380.x; KEPPEN LD, 1987, AM J HUM GENET, V41, P933; Krabbe K, 1997, NEURORADIOLOGY, V39, P724; Kuru S, 2005, NEUROPATHOLOGY, V25, P346, DOI 10.1111-j.1440-1789.2005.00620.x; Lesca G, 2003, NEUROLOGY, V60, P674; MARTIFABREGAS J, 1990, NEUROLOGY, V40, P1799; Moller-Hartmann W, 2002, NEURORADIOLOGY, V44, P371, DOI 10.1007-s00234-001-0760-0; NAKAMURA A, 1995, J NEUROL SCI, V131, P35, DOI 10.1016-0022-510X(95)00028-Z; NICOLAU A, 1987, PEDIATRIE, V42, P359; Nielsen JE, 1998, J NEUROL NEUROSUR PS, V64, P61, DOI 10.1136-jnnp.64.1.61; Nomura H, 2001, NEUROPATHOLOGY, V21, P212, DOI 10.1046-j.1440-1789.2001.00388.x; Ohnishi J, 2001, ACTA NEUROL SCAND, V104, P191, DOI 10.1034-j.1600-0404.2001.00032.x; Okubo S, 2000, ACTA NEUROL SCAND, V102, P196, DOI 10.1034-j.1600-0404.2000.102003196.x; Orlacchio A, 2004, ARCH NEUROL-CHICAGO, V61, P849, DOI 10.1001-archneur.61.6.849; ORMEROD IEC, 1994, J NEUROL NEUROSUR PS, V57, P51, DOI 10.1136-jnnp.57.1.51; Proukakis C, 2004, J NEUROL, V251, P1105, DOI 10.1007-s00415-004-0491-3; Somasundaram S, 2007, PEDIATR RADIOL, V37, P503, DOI 10.1007-s00247-007-0444-y; Sperfeld AD, 2005, EUR NEUROL, V53, P74, DOI 10.1159-000084650; Sperfeld AD, 2005, EUR NEUROL, V54, P181, DOI 10.1159-000090294; Sperfeld AD, 2004, J NEUROL, V251, P1285, DOI 10.1007-s00415-004-0562-5; Teive HAG, 2001, ARQ NEURO-PSIQUIAT, V59, P790, DOI 10.1590-S0004-282X2001000500025; Winner B, 2004, ARCH NEUROL-CHICAGO, V61, P117, DOI 10.1001-archneur.61.1.117810
Solitary fibrous tumor of the scalp in a child: Case report
No full textSolitary fibrous tumors (SFTs) are rare mesenchymal neoplasms that arise most commonly in the pleura but have been increasingly reported in extrapleural sites. The authors report the case of an SFT of the scalp that manifested as an enlarging scalp mass in a 2-year-old boy. The mass was surgically excised. Histological examination showed it to be composed of fusiform cells of variable cellularity with a central hyalinization zone. Immunohistochemical staining was positive for CD34 and negative for smooth muscle actin, S100 protein, desmin, and h-caldesmon. On 1-year follow-up, there was no recurrence of the mass. This case presented some diagnostic difficulty because of the wide range of possible diagnoses for a pediatric scalp mass; however, the distinct immunohistochemical profile helped to eliminate other more frequent fibrous tumors of the scalp. The behavior of scalp SFTs is usually benign, but their course can be unpredictable, and recognition of these lesions is essential. ©AANS, 2013.
Immigration and Human Development: Evidence from Lebanon
No full textThis paper takes Lebanon as a case study to examine the relationship between human development and immigration. It examines this issue from both ends: the sending and the receiving countries. The author suggests that by developing the concept of a diasporic civil society and a diasporic public sphere, a significant aspect of the relationship between human development and immigration is illuminated especially at the level of political, social and cultural capitals. The paper also argues that the double impact of the home country and that of destination has a lot to say about the influence of immigration on human development in Lebanon. In examining Australia as a destination country, the paper shows the particular impact that globalisation and September 11 have lately had on the capacity of the Lebanese migrants for human development. Finally, the paper concludes by showing the extent to which the diasporic civil society compensates for the ‘negligent’ character of the Lebanese state in the context of human development.Lebanese diaspora, human development, diasporic civil society, diasporic public sphere, economic and social capitals
Left-sided cervical aortic arch associated with pseudocoarctation, aneurysm formation, and anomalous left brachiocephalic vein: Appearance on MDCT and MR angiography
No full textCervical aortic arch (CAA) is a rare congenital aortic anomaly. It can be associated with several cardiovascular abnormalities including aortic aneurysm, valvular disease, and pseudocoarctation. In this report, we present a case of CAA with combined association of both aneurysm formation and pseudocoarctation. This combination of anomalies is extremely uncommon, described in only 4 cases in the literature. In addition, our patient had an anomalous subaortic left brachiocephalic vein that, to our knowledge, was not previously described in the literature to be associated with CAA. The radiographic, multidetector computed tomography scan, and magnetic resonance angiography imaging findings are presented. Copyright © 2008 by Lippincott Williams and Wilkins.Chen HY, 2002, INT J CARDIOVAS IMAG, V18, P463, DOI 10.1023-A:1021155625397; HASTREIT.AR, 1966, BRIT HEART J, V28, P722; HAUGHTON VM, 1975, RADIOLOGY, V114, P675; Higuchi K, 2003, J THORAC CARDIOV SUR, V126, P2098, DOI 10.1016-S0022-5223(03)01225-X; Kumar A, 1997, AM J CARDIOL, V79, P388; Oztunc F, 2004, CARDIOL YOUNG, V14, P453, DOI 10.1017-S1047951104004184; Pearson GD, 1997, AM J CARDIOL, V79, P112; Schiavon F, 1998, Radiol Med, V96, P630; TAKADA Y, 1992, J COMPUT ASSIST TOMO, V16, P893, DOI 10.1097-00004728-199211000-00012; Tanju S, 2007, CARDIOVASC INTER RAD, V30, P146, DOI 10.1007-s00270-005-0316-5; Tsukamoto O, 2003, ANGIOLOGY, V54, P257, DOI 10.1177-000331970305400218; VANNOOTEN G, 1986, ACTA CHIR BELG, V86, P24854
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Venous sinus thrombosis in a renal transplant patient [2]
No full text[No abstract available]Bertz H, 1998, TRANSPLANTATION, V66, P241, DOI 10.1097-00007890-199807270-00018; DAVID CZI, 2001, NEPHROL DIAL TRANSPL, V16, P1702; Guerrero AL, 1999, MED CLIN-BARCELONA, V112, P238; Irish AB, 1997, NEPHROL DIAL TRANSPL, V12, P167, DOI 10.1093-ndt-12.1.167; Kujovich JL, 2004, TRANSPLANTATION, V77, P959, DOI 10.1097-01.TP.0000107185.50838.EE; Merkus JWS, 1998, TRANSPLANT INT, V11, P284, DOI 10.1111-j.1432-2277.1998.tb00972.x; RABELINK TJ, 1994, KIDNEY INT, V46, P287, DOI 10.1038-ki.1994.274; Sartori MT, 2000, TRANSPLANTATION, V69, P2116, DOI 10.1097-00007890-200005270-00026; Sartori MT, 2003, TRANSPLANTATION, V75, P994, DOI 10.1097-01.TP.0000058544.71993.E6; Stam J, 2005, NEW ENGL J MED, V352, P1791, DOI 10.1056-NEJMra042354; VANRENTERGHEM Y, 1985, LANCET, V1, P9990
Anatomic relationship between the facial nerve and the tympanic annulus
No full textOBJECTIVE: To identify the relationship between the vertical portion of the facial nerve and the tympanic annulus, using computed tomographic (CT) scans of healthy adult and pediatric patients. STUDY DESIGN: A retrospective review of CT scans. SETTING: The study was conducted in a tertiary referral medical center. PATIENTS: After excluding ears with noted pathology, a total of 241 ears were included in the final review (121 right and 120 left ears). The mean age of the patients was 33.3 years (2 mo to 87 yr). INTERVENTION(S): Both structures were identified at three distinct locations: the superior and the inferior most margins of the tympanic ring and at the umbo. Measurements were made in both anteroposterior and a mediolateral planes. Comparisons between different age groups were made to analyze the relative change in position that happens with age. RESULTS: The vertical portion of the facial nerve, as it proceeds distally, takes a more anterior and lateral course, and crosses the plane of the annulus almost consistently in the inferior third. The average distance at each location is reported. Statistically significant differences were found between age groups, in the areas around the second genu and the distal most segment of the facial nerve. CONCLUSIONS: This is the largest anatomic study to date analyzing the relationship of the facial nerve to the tympanic annulus. It also allows comparison between age groups, demonstrating a significant difference between adult and pediatric groups, especially in the distal portion of the fallopian canal. © 2014, Otology and Neurotology, Inc.Adad B, 1999, LARYNGOSCOPE, V109, P1189, DOI 10.1097-00005537-199908000-00002; ANSON B J, 1955, Ann Otol Rhinol Laryngol, V64, P802; Anson BJ, 1992, SURG ANATOMY TEMPORA; DAHM MC, 1993, ACTA OTO-LARYNGOL, P1; EBY TL, 1986, ANN OTO RHINOL LARYN, V95, P356; Kenna MA, 1989, PEDIAT OTOLARYNGOLOG, P77; Lang J, 1985, PRAKTISCHE ANATOMIE, V1, P113; LITTON WB, 1969, LARYNGOSCOPE, V79, P1584, DOI 10.1288-00005537-196909000-00005; Schuknecht H., 1974, PATHOLOGY EAR0
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
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