bluuebunny/crossref_metadata_2025 huggingface dataset:
Bore-Hole Video and Photographic Cameras
Authors: Koerner R.M. , Fisher D.A. , Parnandi M.
Published: January 2011

35 mm still and television techniques are shown to be of great value in following changes at the bedrock/ice interface and along borehole walls during closure over one or more years in polar or sub-polar ice caps. We have found no evidence of basal slip over a one year period in a 137 m hole at the top of the flow line on an ice cap in northern Ellesmere Island, However, the bore hole has deformed to an elliptical cross-section near the bed and some pronounced extrusion-like layers have developed within 3 m of the bed in dirty ice in the year since drilling.
Erosion Rate of a Younger Dryas Cirque Glacier at Kråkenes, Western Norway
Authors: Larsen E. , Mangerud J.
Published: January 2011

An erosion rate of 0.5 to 0.6 mm a−1 is deduced for a Younger Dryas cirque glacier. The erosion period of 700 a was determined from the laminated glaciolacustrine sediments in a small lake just outside the end moraine of the cirque and radiocarbon dates obtained below and above these sediments. The volume of eroded bedrock was calculated from measurements of the deposited sediments, of which the end moraine, the glaciofluvial delta, and the glaciolacustrine sediments are most important. With a constant erosion rate, the cirque could have formed in 83 to 125 000 a.
Sediment Transport from the Glacier Zone, Central Asia
Authors: Shcheglova O. P. , Chizhov O. P.
Published: January 2011

All available data on suspended sediment concentration and sediment discharge for Central Asian rivers have been used to estimate the small-grained sediment discharge from glaciated areas. Glacial streams discharge the bulk of suspended material during the period of intensive melting (July to September). There is a good exponential relationship between the suspended sediment concentration (or sediment discharge) and air temperature over glaciers. The area of the largest glacier in the watershed is another factor influencing the silt content and sediment run-off. Its contribution is smaller than that of air temperature. Yearly sediment run-off for glacial rivers in the Pamir and Tien Shan has been computed. Highest values are from the Pamir with many rivers yielding 3000 tonnes km–2 (11 200 tonnes km–2 for the Vukhsh river). The highest run-off in Tien Shan is 2 000 tonnes km–2 for the Chatkal river.
Freezing Fronts and their Possible Influence upon Processes of Subglacial Erosion and Deposition
Authors: Menzies John
Published: January 2011

Recent studies have shown the important influence of pore-water movement and the subglacial thermal regime on processes of erosion and deposition at the subglacial interface. the influence of migrating freezing fronts within subglacial material has been largely ignored. the phenomena of ice-water interface processes will be examined and their relevance to subglacial processes illustrated. four case studies are presented that deal with the various effects that freezing-front movement may have on pore water, consolidation, shear strength, and likely diagenetic characteristics of subglacial deposits. the influence upon erosional and depositional processes will be outlined, and a mechanism related to potential surge-like conditions within the subglacial zone postulated.
Forms of Subglacial Erosion on Palaeozoic Sedimentary Rocks (Abstract only)
Authors: Rogerson R.J. , Kodybka R.
Published: January 2011

The relationship between bedrock erodibility and the characteristic bed form and roughness produced by subglacial abrasion is largely unknown. Less resistant bedrocks may be abraded down to a surface of low obstacle size and low roughness parameter. However, Hallet (1979) notes that bedforms are probably dampened at widely varying rates, and that certain bedforms may actually be amplified through time by rapid trough abrasion. The object of this paper is to examine the relationship between the mechanical strength of several bedrock types and the magnitude of subglacially streamlined bed forms found on them.

Cambrian limestones, mudstones, dolomites, and chert, some with abundant quartz veins, are the bedrock types examined. They lie as a series of steeply-dipping beds up to 100 m thick with their strike across the floor of the Yoho valley, in the Rocky Mountains of British Columbia. They were covered by the ice of Yoho Glacier 30 years ago, and are now less than 0.5 km below the present ice terminus. The sites examined lie within an area less than 0.25 km2, up-glacier from a major riegel form. The Yoho River nearby flows in a deep gorge and has not affected this section of the former glacial valley floor.

The bedrocks were analysed and tested in the laboratory for mechanical strength and resistance to abrasion.

During summer 1979, streamlined bedforms and surface roughness were surveyed along the former glacier flowline, evidenced by striations, and plane table maps were completed across several beds. Small 1 m2 plots were surveyed in detail on each bedrock type. Analysis of surface forms has included 3-dimensional SYMVU plots. Preliminary indications are that the micro-roughness shows greater variability between bedrock types than do large wavelengths of relief. However, resistant bedrocks are areas of prominent positive relief while others are generally low-lying. Analysis of the results continues.
Subglacial Morphology in Northern Palmer Land, Antarctic Peninsula
Authors: Crabtree R.D.
Published: January 2011

Ice-thickness and surface-elevation data gathered from radio echo flights over the Antarctic Peninsula are presented as profiles for five major outlet glaciers in northern Palmer Land and as contour maps for an area of 8 000 km2 to the east of George VI Sound. Glacier profiles appear to be closely related to ice discharge especially to convergent and divergent flow. Comparison of subglacial topography with geological evidence of faulting suggests that the area around George VI Sound is a region where structure is an important influence on the pattern of glacial erosion.
Rock Jointing and Abrasion forms on Roches Moutonnées, SW Finland
Authors: Rastas Jukka , Seppälä Matti
Published: January 2011

The influence of bedrock structures, especially joints, on the formation of roches moutonnées and different glacial abrasion forms on roches moutonnées were studied in the southwest archipelago of Finland.The size and form of roches moutonnées are closely connected with the frequency and state of joints in the bedrock. The fewer and smaller the joints are, the larger are the roches moutonnées that can be formed. Vertical joints in the direction of the ice movement form the weakest zones and determine the width of the roches moutonnées. Joints dipping against glacial movement determine the dip of the eroded rock surface. Horizontal joints provide a suitable base for large and gently-dipping roches moutonnées, which are normally lower than others with less frequent horizontal joints. Striae, friction cracks, facets, fracture lines, and plucked surfaces, and their positions on the surfaces of roches moutonnées, were observed. On the basis of these observations, a stereographic model of the distribution of different abrasion features on the surfaces of roches moutonnées was produced.
Evaluation of C3435T MDR1 Gene Polymorphism in Adult Patient with Acute Lymphoblastic Leukemia
Authors: Miladpoor Behnoosh , Tavassoli Alireza , Meshkibaf Mohammad Hassan , Kha Fateme
Published: January 2011

Background: P-glycoprotein (P-gp) is a transmembrane pump encoded by MDR1 gene. It contributes in protection of the cells against xenobiotic and toxic compounds. P-gp also contributes in multidrug resistance in acute lymphoblastic leukemia (ALL). Human MDR1 polymorphism include C to T exchange at position 3435, individuals with TT polymorphism have lower expression of P-gp than the others with CC genotypes. Accumulation of xenobiotics in the cells can cause some diseases like cancers.Materials and Methods: To evaluate MDR1C3435T gene polymorphism in adult patients with ALL, 54 patients and 96 healthy controls were involved in our survey. Genotyping of ALL patients and healthy controls was performed by Polymerase Chain Reaction – Restriction Fragment- Length Polymorphism (PCR-RFLP). Data analysis was done by SPSS software through T-test and Chi- Square. Results: No significant difference was found between C3435T MDR1 gene polymorphisms and incidence of ALL in adult patients. Also there was not any significant difference between T and C alleles and incidence of ALL. Conclusion: C3435T MDR1 polymorphism is not associated with the incidence of ALL in the population studied. Keyword: P-gp; C3435T; MDR1; ALL; polymorphism DOI: 10.3329/jom.v12i1.5541J Medicine 2011; 12 : 3-6
Serum Paraoxonase (Arylesterase) Activity in Chronic Renal Failure
Authors: Gayathri Balasubramaniam , Usha Anand , Vijaya Duraisamy
Published: January 2011

Background: Mortality rates are higher among patients with chronic renal failure with a good proportion of this excess burden being attributable to cardiovascular disease. This excess risk is not entirely explained by elevated traditional risk factors. Among the non-traditional risk factors, serum paraoxonase (Arylesterase) activity is an important one. Materials and Methods: It was a case-control study which included total 127 subjects, 44 were non-dialysis CKD patients, 33 Heamodialysis dependent patients and 50 healthy controls. HDL-C, Apo-A and serum paraoxonase (Arylesterase) activity was estimated and compared with normal control population. Results: Serum Arylesterase activity, a measure of PON was significantly lower in CRF (on conservative management and on hemodialysis) compared to controls. Conclusion: Measurement of anti oxidant capacity of HDL-C may improve the predictive accuracy of atherosclerotic coronary artery disease, providing new strategies for the prevention and treatment of accelerated atherosclerosis in chronic renal failure. Keyword: Serum paraoxonase (Arylesterase); chronic renal failure; AtherosclerosisDOI: 10.3329/jom.v12i1.5638J Medicine 2011; 12 : 17-20
Crigler-Najjar Syndrome Type 2 in a Young Adult
Authors: Haque Md. Azizul , Sharmin Laila Shamima , Harun or Rashid Mohd , Alim MA , Ekram ARM Saifuddin , Mowla Syed Ghulam Mogni
Published: January 2011

Crigler-Najjar syndrome type 2 in an autosomal recessive congenital non-hemolytic hyperbilirubinemia caused by UDP-glucuronosyltransferase deficiency. Only a few hundred cases have been described in the literature so far. We are reporting Crigler-Najjar syndrome type 2 in an 18 year old female born out of consanguineous marriage. Keyword: Crigler-Najjar syndrome; UDP-glucuronosyltransferase; Bangladesh DOI: 10.3329/jom.v12i1.6359J Medicine 2011; 12 : 81-85
Disseminated Histoplasmosis in an Elderly Man Presented with Fever, Weight loss, Abdominal Pain and Haemoptysis - A Case Report with Literature Review
Authors: Amin Mohammad Robed , Shumi Farzana , Khan Hasibuddin , Abdullah Syed Ahmed , Alam Shafiul , Hussain Ahmed Riyad , Kahhar MA
Published: January 2011

An elderly patient presented with prolonged fever, gross weight loss, recurrent haemoptysis and abdominal pain. He had a background history of adrenal tuberculosis with completion of treatment without any obvious improvement. Clinically he was diagnosed as a case of adrenocotical insufficiency. Evaluation including histopathology revealed the diagnosis as disseminated histoplasmosis involving adrenal gland and lungs. The disease is a rarity without any underneath immunosuppression and hence high index of suspicion with appropriate steps for investigation is the key to achieve a diagnosis of disseminated histoplasmosis in Bangladesh. Keyword: . DOI: 10.3329/jom.v12i1.6936J Medicine 2011; 12 : 81-85
Spectrum of Alcoholic Liver Disease in Tribal Alcoholics of Chittagong Hill Tracts of Bangladesh
Authors: Biswas Sarmistha , Paul Sujat , Syeed Abu , Mahbub Md Shahriar , Khan Mohammad Ashik Imran , Gupta Ratan Das , Miah Md Titu , Ayaz KFM , Das Aparna , Alam Md Billal , Mowla Syed Ghulam Mogni
Published: January 2011

Background: Alcohol is one of the most important causes of liver disease. In Bangladesh, alcoholism is not a usual practice among the general population as there are social and religious barriers against it. But in the Hill tracts, there is no social stigma in taking alcohol. Relatively little is known about this aspect in Bangladesh. This small-scale study was done to identify the spectrum of liver disease among tribal people. Material and Methods: A descriptive, observational clinical study was conducted for a period of six months (1st July, 2007 to 31st December, 2007) on a series of 50 tribal alcoholic people, collected from General Hospital and the tribal community of Rangamati Hill District. Subjects were included from both the urban and rural area of different socioeconomic classes. History, meticulous clinical examination and investigations were done to detect the pattern of alcohol induced liver injury. Results: Among the 50 cases, 47 patients were male and 3 were female cases. Both regular and irregular drinkers were included. The common symptoms of liver disease among tribal alcoholics were yellow coloration of sclera (24%), nausea & vomiting (20%) and weight loss (14%). The common findings were jaundice (24%), anemia (20%), ascites (10%), edema (10%) and hepatosplenomegaly (20%). Liver function tests revealed only 17 patients had mild to severe form of hepatocellular damage. Hyperbilirubinemia was found in 34% participants. AST/ALT ratio more than 2 was found in 32% subjects. Ultrasonography was done in 46 out of 50 subjects: 29 cases reported as normal (63.04%), fatty liver in 5 (10.87%), acute hepatitis in 5 (10.87%) and chronic liver disease in 7 (15.22%) cases. Liver biopsy was possible in 4 suspected cases (clinically and biochemically) of alcoholic liver cirrhosis and histology supported the clinical diagnosis in these cases. So, alcohol induced liver damage was noticed only in 17 cases. Nearly two-thirds of the participants were free from any form of liver disease. Conclusion: Despite the presence of risk factors for developing alcoholic liver disease, the prevalence was found to be low among the tribal alcoholic participants in this study. Keyword: Alcoholic liver disease; alcoholic fatty liver; alcoholic hepatitis; alcoholic liver cirrhosis; tribal population; Bangladesh DOI: 10.3329/jom.v12i1.6925J Medicine 2011; 12 : 7-11
Overview of Renal Osteodystrophy and Current Therapeutic Approach
Authors: Islam Mohammad Zahidul
Published: January 2011

DOI: 10.3329/jom.v12i1.6932J Medicine 2011; 12 : 45-49
Jaundice As a Presentation of Thyrotoxic Crisis
Authors: Habib Shah Khaled , Khan Mohammad Ashik Imran , Mahbub Md Shahriar , Rashid MA , Miah Md Titu , Gupta Ratan Das , Alam Md Billal
Published: January 2011

Thyrotoxic crisis is a life threatening condition which requires urgent detection and management. Due to its wide variety of presentation its diagnosis can be difficult in some cases and high index of suspicion is required for its diagnosis. We report a case of 45 year old lady presenting with fever, jaundice and passage of loose stool whose thyroid hormone profile proved her to be suffering from thyrotoxic crisis. Keyword: Thyrotoxic crisis; Jaundice; Antithyroid drugs; Hypoxia DOI: 10.3329/jom.v12i1.6935J Medicine 2011; 12 : 70-72
Congenital Hemangiopericytoma
Authors: Jahan Fauzia , Ghosh PK , Khanam Rehana , Rahman Saidur
Published: January 2011

Hemangiopericytoma is a rare vascular neoplasm that usually occurs in adults. Occurrence of the tumors in infants, known as congenital or infantile hemangiopericytoma, is rare and its behavior is different than that of adult type. We are reporting a 10 day old male neonate presenting with a mass on his left arm since birth. Clinically it was suspected as lymphangioma because of its high incidence in pediatric patients. The tumor was surgically removed and histopathologically diagnosed as a case of hemangiopericytoma. Keyword: Hemangiopericytoma; congenital type. DOI: 10.3329/jom.v12i1.6937J Medicine 2011; 12 : 89-90
Unusual Cause of Multiple Cranial Nerve Palsy
Authors: Mahbub Md Shahriar , Al Faruq Abdullah , Khan Mohammad Ashik Imran , Ahasan HAM Nazmul
Published: January 2011

DOI: 10.3329/jom.v12i1.6941J Medicine 2011; 12 : 96
A Young Man with Headache & Loss of Vision
Authors: Siddqui Md Mahmudur Rahman , Mahbub Md Shahriar , Khan Mohammad Ashik Imran
Published: January 2011

DOI: 10.3329/jom.v12i1.6942J Medicine 2011; 12 : 97
Les sceaux du musée d'Iznik
Authors: Cheynet Jean-Claude
Published: January 2011

REB 49 1991 France p. 219-235, 4 pl.

J.-C. Cheynet, Les sceaux du musée d'Iznik. — Dix-huit sceaux byzantins sont actuellement conservés au musée d'Iznik. La plupart des pièces, réparties entre le 6e et le 12e siècle, étaient jusqu'à maintenant inconnues, notamment les plombs de Marin stratège des Arméniaques, de Jean Radènos et de Jean Spondylès, ainsi qu'un sceau en caractères latins, dont l'interprétation fait difficulté.
L'école Saint-Paul de l'Orphelinat à Constantinople : bref aperçu sur son statut et son histoire
Authors: Mergiali-Falangas Sophia
Published: January 2011

REB 49 1991 France p. 237-246

Sophia Mergiali-Falangas, L'école Saint-Paul de l'Orphelinat à Constantinople : bref aperçu sur son statut et son histoire. — A partir du passage ambigu et allusif de Georges Pachymère ayant trait à l'école Saint-Paul de l'Orphelinat, l'auteur essaie de définir à nouveau le régime réel et le rôle de cette institution dans la société byzantine, lors de sa fondation au 11e siècle et tout au long de son existence, qui est attestée jusqu'au 13e siècle.
Note prosopographique sur une inscription du rempart de Thessalonique (861/862)
Authors: Kiourtzian Georges
Published: January 2011

REB 49 1991 France p. 247-253

G. Kiourtzian, Note prosopographique sur une inscription du rempart de Thessalonique (861/862). — Découverte fortuitement sur le rempart de Thessalonique, dans la tour dite «du relief», l'inscription nous fait connaître un nouveau gouverneur militaire de la ville : Marinos. Il est connu par d'autres sources contemporaines, et il est possible de l'identifier avec un haut dignitaire de Constantinople attesté en 869.
Un manuscrit inconnu provenant de la bibliothèque de l'archonte phanariote Nikolaos Karatzas
Authors: Papazoglou Georges K.
Published: January 2011

REB 49 1991 France p. 255-261

G. K. Papazoglou, Un manuscrit inconnu provenant de la bibliothèque de l'archonte phanariote Nikolaos Karatzas. — Le manuscrit n° 3 de la bibliothèque de Harvard College, un Psautier du 12e siècle, provient du fonds réuni par l'archonte phanariote Nikolaos Karatzas, comme le manuscrit n° 1474 de la Bibliothèque Nationale de Grèce. Les deux manuscrits portent des notices dues à la même main.
L'occupation de Rhodes par les Hospitaliers
Authors: Failler Albert
Published: January 2011

REB 50 1992 France p. 113-135

A. Failler, L'occupation de Rhodes par les Hospitaliers. — Dans le dernier livre de son Histoire, Georges Pachymérès rapporte, dans un chapitre gravement mutilé, la situation de l'île de Rhodes en avril 1307. A cette époque, les Hospitaliers de Saint-Jean de Jérusalem occupaient une bonne partie de l'île, mais ils étaient tenus en échec par les troupes byzantines devant la citadelle de Rhodes. Les chevaliers finirent par y entrer le 15 août 1310. Il faut revenir, en effet, à la chronologie contenue dans les Vies de Clément V et rejeter la datation tirée, sans fondements suffisants d'ailleurs, des chroniques postérieures de Gérard de Monréal, de Francesco Amadi et de Florio Bustron, qui ont amené les historiens à placer la reddition de la citadelle de Rhodes en août 1308.
La première démission du patriarche Athanase (1293) d'après les documents
Authors: Failler Albert
Published: January 2011

REB 50 1992 France p. 137-162

A. Failler, La première démission du patriarche Athanase (1293) d'après les documents. — On a considéré jusqu'à présent comme authentiques les deux documents qui sont censés représenter le double acte de démission du patriarche Athanase en 1293. Le premier document est transmis par Georges Pachymérès dans son Histoire, le second est conservé dans la Correspondance d'Athanase. Mais l'analyse des textes et l'examen de la situation politique et, ecclésiastique montrent que seul le premier document est authentique. Le second texte a été forgé plus tard, pour défendre la mémoire du patriarche destitué, et il emprunte la majeure partie de son argumentation au plaidoyer qu'Athanase avait dissimulé à Sainte-Sophie avant de quitter les lieux et qui fut découvert quatre ans plus tard. Le meilleur argument pour démontrer l'inauthenticité de ce prétendu second acte de démission est que le contenu du texte ne fut pas connu au moment de la démission en 1293, mais qu'il resta ignoré de tous jusqu'à la découverte, en 1297, du billet caché à Sainte-Sophie.
Allagion, tzaousios et prôtallagatôr dans le contexte moréote : quelques remarques
Authors: Hendrickx Benjamin
Published: January 2011

REB 50 1992 France p. 207-217

B. Hendrickx, Allagion, tzaousios et prôtallagatôr dans le contexte moréote : quelques remarques. — En se référant plus particulièrement à la Chronique de Morée, l'auteur émet quelques remarques sur la définition de l'allagion et la fonction du tzaousios telles qu'elles ont déjà été exposées dans cette revue (HEB 47, 1989, p. 183-207). Il ajoute quelques considérations sur le prôtallagalôr.
The Syntaxis armatorum quadrata : a tenth-century tactical blueprint
Authors: McGeer Eric
Published: January 2011

REB 50 1992 France p. 219-229

E. McGeer, The Syntaxis armatorum quadrata : a tenth-century tactical blueprint. — The Syntaxis armalorum quadrata consists of a short text and diagram detailing a square formation for infantry. The text and diagram are presented together here for the first time in a critical edition with an assessment of the accuracy of the diagram, and the value of the Syntaxis as a source for the science and conduct of warfare in tenth-century Byzantium.
Deux consuls des Grecs à Gênes à la fin du 14e
Authors: Otten-Froux Catherine
Published: January 2011

REB 50 1992 France p. 241-248

Catherine Otten-Froux, Deux consuls des Grecs à Gênes à la fin du 14e siècle. — Trois actes conservés dans l'Archivio di Stato de la ville de Gênes attestent l'existence d'un consul Graecorum à Gênes à la fin du 14e siècle. Sont reproduits in extenso deux documents, datés respectivement du 19 janvier 1384 et. du 3 juin 1390.
Un acte inédit du patriarche de Constantinople Jean XII (2 juin 1294)
Authors: Failler Albert
Published: January 2011

REB 51 1993 Franco p. 77-90

A. Failler, Un acte inédit du patriarche de Constantinople Jean XII (2 juin 1294). - A la fin du Florent. Laurentianus 5-2 (f. 386V) est copié un acte synodal du 2 juin 1294, certifié par le chartophylax de la Grande Église. La décision synodale tranche un différend qui s'était élevé à Thessalonique, à propos de l'église des Asornates, entre le métropolite, qui revendiquait ses droits de nomination et d'ordination, et l'higoumène du monastère d'Akapniou, qui, en sa qualité de gardien ou d'inspecteur («éphore») de cet établissement, entendait y effectuer les nominations aux divers postes. Le synode tranche en faveur du métropolite. L'acte contient une importante liste de présence de vingt-huit évèques.
Die Chronologie der Briefe des Maximos Planudes an Alexios Dukas Philanthropenos und dessen Umgebung
Authors: Beyer Hans-Veit
Published: January 2011

REB 51 1993 France p. 111-137

H.-V. Beyer, Die Chronologie der Briefe des Maximos Planudes an Alexios Dukas Philanthropenos und dessen Umgebung. — Die Briefe des Planudes an Philanthropenos und dessen kleinasiatische Umgebung werden auf Grund innerer Kriterien bis auf wenige in eine chronologische Reihenfolge gebracht und durch Kombination mit Daten, die vornehmlich bei Pachymeres überliefert sind, auf die Zeit ab Ostern 1293 bis Ende 1295 bzw. Frühjahr 1296 datiert. Die militärischen Operationen des Strategen erhalten dadurch ebenfalls ihre zeitliche Einordnung.
Regards sur l'enfant nouveau-né à Byzance
Authors: Congourdeau Marie-Hélène
Published: January 2011

REB 51 1993 France p. 161-176

Marie-Hélène Congourdeau, Regards sur l'enfant nouveau-né à Byzance. — L'attitude envers le nouveau-né est un bon révélateur des éléments conscients et inconscients d'une culture. Dans la mentalité byzantine, elle exprime de manière privilégiée le conflit entre les composantes chrétiennes et non-chrétiennes. Une enquête dans des sources diverses (droit, droit canon, hagiographie, érotapokriseis, sources historiques et médicales ...) permet de dégager plusieurs attitudes : accueil et rejet (bréphotrophia, infanticide), protection et méfiance (l'enfant non baptisé, proie favorite des démons). Fragile, menacé, menaçant (la naissance multiple ou monstrueuse, funeste présage), proche du néant dont il vient, et où la plupart retournent rapidement, impur jusqu'à son baptême et cependant image de Dieu, le nouveau-né fascine, inquiète, émeut. Il offre aussi à l'Église byzantine l'occasion d'affirmer la spécificité de son anthropologie et de façonner une pratique différente de celle des civilisations antiques.
Un texte patriographique et édifiant : Le «Discours narratif» sur les Hodègoi
Authors: Angelidi Christine
Published: January 2011

REB 52 1994 France p. 113-149

Christine Angelidi, Un texte patriographique et édifiant : Le «Discours narratif» sur les Hodègoi. — D'après un témoin manuscrit unique, daté du 15e siècle, est édité un texte anonyme sur le monastère constantinopolitain des Hodègoi. La première partie du «discours narratif» comprend une «ekphrasis» de l'église ; ensuite sont exposés diverses légendes patriographiques, ainsi que des récits édifiants concernant les reliques conservées aux Hodègoi. L'apport du texte sur le plan de la topographie, de la fondation et de l'histoire du monument est commenté dans l'introduction. Par ailleurs, l'analyse des légendes sur les Hodègoi, que notre auteur anonyme reproduit dans son discours, permet de suivre la création par étapes d'un fonds de récits patriographiques, qui prit sa forme définitive au 14e siècle.
Première didascalie de Serge le Diacre : Éloge du patriarche Michel Autôreianos
Authors: Loukaki Marina
Published: January 2011

REB 52 1994 France p. 151-173

Marina Loukaki; Première didascalie de Serge le Diacre : Éloge du patriarche Michel Autôreianos. — Edition de la première didascalie de Serge, diacre de Sainte-Sophie, notaire patriarcal et didascale du Psautier. Cette œuvre, qui se trouve dans VAthenien- sis 96 (f. 316V-319), est un Éloge du patriarche Michel Autôreianos prononcé à Nicée à l'occasion de la nomination de Serge comme didascale du Psautier. Dans l'introduction qui précède le texte grec, on trouve un résumé du discours, la détermination de la date et du lieu de sa rédaction, une analyse des allusions de l'écrivain à la réalité historique et une esquisse de la personnalité et de la carrière du patriarche Michel Autôreianos. L'introduction s'achève par quelques remarques concernant la structure de la composition et ses rapports avec d'autres Éloges patriarcaux de l'époque. L'édition du texte est accompagnée d'un apparat critique, des testimonia et d'une traduction en français, composée par B. Flusin.
«Didascale» de l'Église : un titre et deux réalités
Authors: Mergiali-Falangas Sophia
Published: January 2011

REB 52 1994 France p. 175-185

Sophia Mergiali-Falangas, «Didascale » de l'Église : un titre et deux réalités. — Partant de quelques exemples caractéristiques de maîtres d'école connus à Constantino- pole, à Thessalonique et en Crète à l'époque des Paléologues, l'auteur signale la particularité de leur enseignement (instruction profane et dogmatique) et la ressemblance de leur cursus avec celui d'un «didascale» de l'Église. Si le rôle des didascales au sein de la hiérarchie enseignante de l'Église est difficile à cerner dans sa diversité, on constate pourtant, à travers ces exemples de maîtres de l'époque des Paléologues, que le ministère des didascales s'étendait dans certains cas au-delà de la stricte prédication et comportait une activité pédagogique et scolaire.
A Development in Nomenclature on the Seals of the Byzantine Provincial Aristocracy in the Late Tenth Century
Authors: Stephenson Paul
Published: January 2011

REB 52 1994 France p. 187-211

P. Stephenson, A Development in Nomenclature on the Seals of the Byzantine Provincial Aristocracy in the Late Tenth Century. — The article examines the appearance and sudden proliferation of family names on Byzantine lead seals and places this innovation in a political context. It traces the delayed adoption of the practice on seals of the civilian bureaucracy and the imperial seal. It suggests that this is illustrative of attitudes prevailing among provincial aristocrats and at the imperial court. It emphasises the benefits of closer identification and therefore security accorded by the innovation.
Inter-firm resources and the role of partners as determinants in the configuration and performance of interorganisational relationships
Authors: Pérez Ana Mª García
Published: January 2011

In this work, we propose a theoretical approach based on the view of resources and capabilities, as well as the role of partners, as determinants in the configuration and performance of interorganisational relationships. The starting point is the resource typology provided by Miller and Shamsie (1996), who established two types of resources: property-based and knowledge-based. From this point of view, and depending on the role played by each of the firms in the interorganisational relationship, the contributions of resources will vary, as will the subsequent relational governance structure, information exchanged and joint actions undertaken. This will give rise to different interorganisational performances.
Measuring innovation capacity in the agrifood sector: from single companies to value chains
Authors: Kühne Bianka , Lefebvre Virginie , Vermeire Bert , Gellynck Xavier
Published: January 2011

This paper proposes an approach for measuring innovation in the agrifood sector. First we develop a concept of innovation taking into account its multiform, complex and embedded character. We then we evaluate the validity of the concept by applying it to single firms and value chains in the agrifood sector. This reveals that the concept works well both at firm and value chain levels. This paper provides the basis for future research in the field of innovation measurement at firm and value chain levels, providing also important implications for the further development of the proposed approach. We encourage other scholars to test the applicability of our approach to other sectors.
A new species of Echium (Boraginaceae) from the island of Porto Santo (Madeira Archipelago)
Authors: Carvalho José Augusto , Pontes Tânia , Batista-Marques Maria Isabel , Jardim Roberto
Published: January 2011

A new species endemic from the island of Porto Santo (Madeira Archipelago) is described as Echium portosanctensis J.A. Carvalho, Pontes, Batista-Marques & R. Jardim. Morphological studies based on reproductive and vegetative traits revealed a set of diagnostic characters confirming separation of E. portosanctensis from other recognized species at sectional level. A taxonomic diagnosis, a morphological description and illustrations of the new species are provided. Images, distribution maps, ecological data and a key for Madeiran species of Echium are also provided. Diagnostic characters, conservation status, threats and speciation mechanisms are discussed. In addition, reports on the occurrence of E. candicans on the island of Porto Santo are also discussed.
Typification of the name Lavatera triloba subsp. pallescens (Moris) Nyman and reassessment of L. minoricensis Cambess. (L. triloba subsp. minoricensis comb. nov.)
Authors: Escobar García Pedro , Mascia Francesco , Bacchetta Gianluigi
Published: January 2011

The taxonomic identity of two poorly known taxa of the Lavatera triloba aggregate (Malvaceae) is clarified. The name L. triloba subsp. pallescens (Moris) Nyman is reassessed, and a new combination, L. triloba subsp. minoricensis, is proposed. Both taxa were originally described as species, and later either regarded as synonymous or alternatively subsumed as mere formae within subsp. pallescens. The extreme rarity of the plants led to insufficient knowledge and subsequent misinterpretation of the basionyms, L. minoricensis Cambess. from Minorca (Balearic Islands, Spain) and L. pallescens Moris from southwestern Sardinia (Italy). The combination L. triloba subsp. pallescens (Moris) Nyman was used to refer the Minorcan plants despite their clear differences in morphology and ecology. The rediscovery of two Sardinian populations of L. triloba subsp. pallescens in nature, after more than 110 years without reports or collections, has allowed for re-evaluation and typification of the misused names.
Taxonomic notes on genus Centaurea (Asteraceae) in the Iberian Peninsula. Peninsula. C. paniculata, C. hanryi and C. diffusa
Authors: López Eusebio , Devesa Juan Antonio
Published: January 2011

Morphologic variability in the Iberian Peninsula of Centaurea paniculata L. (Centaurea L. sect. Centaurea), an endemic species of SW Europe, is discussed. It is represented by three subspecies with well-defined areas: subsp. paniculata, subsp. leucophaea (Jord.) Arcang. and subsp. oscensis, a new subspecies, whose chromosome number is counted (2n = 18). Moreover, the variability of C. hanryi Jord, an endemism of NE Spain and SE France is studied, and finally, the distribution in the Iberian Peninsula of the neophyte C. diffusa Lam. is commented.
A new species of Hyptis (Labiatae) from Colombia
Authors: Fernández-Alonso José Luis
Published: January 2011

The shruby new species, Hyptis jacobi Fern. Alonso, only known from the central Chicamocha valley (Department of Santander) in the western slope of the Cordillera Oriental of Colombia, is described and illustrated. This species is related to the Andine H. tafallae (Sect. Umbellatae) but is quite different from other Hyptis previously known from Colombia.
Use of Problem Solving Teaching Among Secondary Agriculture Teachers in Illinois
Authors: Osborne Edward W. , Hamzah Ramlah
Published: January 2011

Socio-cultural issues within our agrifood system such as social inequality, personal and community health, and the environment have been the subject of interdisciplinary inquiry and curriculum from inside and outside of education, but exploration of these topics from within Agriculture Education is lacking. The importance of these issues, as well as the responsibility that agriculture educators have to fostering agency and consciousness in the next generation of agriculturalists, requires that School Based Agriculture Education formulate a pedagogical framework to address them. This paper introduces a new pedagogical approach to be applied across SBAE programs- a critical pedagogy of agriculture. In order to accomplish this, (a) the need for a critical pedagogy of agriculture is discussed, (b) the history of critical theory and critical pedagogy is explained as well as other critical pedagogies that have emerged to address similar and overlapping issues with agriculture, and (c) suggestions for how to reimagine an entire SBAE program, including the FFA Chapter and Supervised Agricultural Experiences, through a critical lens are offered. Through a critical pedagogy of agriculture, the transformative potential of SBAE programs to empower students and address related social justice issues can be realized.
Farm Credit Competencies Needed and Possessed by Selected Nebraska Young Farmers/Ranchers
Authors: Blezek Allen G. , Post Daniel H.
Published: January 2011

Studying the functionality and dynamism of long-term research networks makes it possible to discover underlying collaborative strategies and outcomes, including research productivity. Using a mixedmethods approach, we employed social network analysis (SNA) technique, original network indices, and qualitative interviews to operationalize the network dynamism of an entomology research team by explaining its reconfigurations over time. The study focused on a sub-network composed of researchers and Extension specialists who remained in the network through three successive reconfigurations over seven years. Network indicators revealed an increasingly connected structure for the sub-network after each project reconfiguration, while network indices revealed the dynamism of the overall research network. Dynamism was based upon the movement of team members in and out the network. Team members’ movement in and out of the network was motivated primarily by their interest in investigating the same phenomena. We concluded that long-term scientific collaborations are governed by team members’ scientific goals and professional desire for productivity, while geographic closeness and friendships were less important variables for continuing collaboration.
Perceptions Of Agribusiness Leaders Toward Agricultural Education In Nebraska
Authors: Blezek Allen G. , Dillon Roy D.
Published: January 2011

No abstract available
Enrollment Issues In Agricultural Education Programs And FFA Membership
Authors: Hoover Tracy S. , Scanlon Dennis C.
Published: January 2011

No abstract available
Educational Needs Of International Graduate Students In Agriculture And Education As Perceived By University Of Missouri-Columbia Graduate Faculty
Authors: Timko Joseph J. , Linhardt Richard E. , Stewart Bob R.
Published: January 2011

No abstract available
Tropical cooling in the case of stratospheric sudden warming in January 2009: focus on the tropical tropopause layer
Authors: Yoshida K. , Yamazaki K.
Published: January 2011

Abstract. Temperature changes in the tropics, especially in the tropical tropopause layer, are investigated at the time of a major stratospheric sudden warming (SSW) event that started on about 16 January 2009. During the SSW, the temperature in the tropical upper stratosphere declined and the cold anomaly propagated downward, while the tropics between 150 and 100 hPa started to cool from 18 January, prior to a temperature drop at 70 hPa. We performed thermodynamical and dynamical analyses with ERA-Interim data. During the SSW event, the tropical stratosphere was cooled by upwelling, and the upwelling was induced by wave forcing in the northern extratropical stratosphere. However, the stratospheric wave forcing generated only weak upwelling in the tropics below 100 hPa. During the cooling period at around 18 January, tropical ascent was the main contributor to cooling of the tropics between 150 and 100 hPa. Subsequently, vertical convergence of the vertical heat flux, which is closely tied to the convection structure, resulted in a gradual decrease in temperature within the tropical uppermost troposphere. Waves that had same source region with the upward-propagating waves that caused the SSW event, propagated from Alaska to the tropics of Eastern South America and Eastern Africa at around 100 hPa, and dissipated in these areas; the associated wave forcing drove the tropical ascent between 150 and 100 hPa.
Performance of multi-model AEMET-SREPS precipitation probabilistic forecasts over Mediterranean area
Authors: Callado A. , Santos C. , Escribà P. , Santos-Muñoz D. , Simarro J. , García-Moya J. A.
Published: January 2011

Abstract. Spanish Meteorological Agency (AEMET) runs a daily experimental multi-model Short-Range Ensemble Prediction System (AEMET-SREPS). The role of the system horizontal resolution (0.25 degrees) on the performance of 24-h precipitation probabilistic forecasts, and its relation with mesoscale events, are assessed comparing the performance over the Mediterranean area and over an European Atlantic area. Gridded high resolution rain observations and standard verification measures have been used at different precipitation thresholds, while studying the dependency on seasons for a one year period (May 2007 to June 2008). As a general result, performance over the Mediterranean area is higher than over the Atlantic one, albeit some relative loss of skill is found in autumn, when mesoscale convective organization is assumed to play a more important role. So it is suggested that AEMET-SREPS system precipitation predictability over the Mediterranean in autumn could be expected to improve if the horizontal and vertical resolution is increased in order to take into account the effect of meso-beta scale, especially important for convective organization.
On the ability of pseudo-operational ground-based light detection and ranging (LIDAR) sensors to determine boundary-layer structure: intercomparison and comparison with in-situ radiosounding
Authors: Milroy C. , Martucci G. , Lolli S. , Loaec S. , Sauvage L. , Xueref-Remy I. , Lavrič J. V. , Ciais P. , O'Dowd C. D.
Published: January 2011

Abstract. Twenty-one cases of boundary-layer (BL) structure were retrieved by three co-located remote sensors, one lidar (Leosphere ALS300) and two ceilometers (Vaisala CL31, Jenoptik CHM15K). Data were collected during the ICOS field campaign held at the GAW Atmospheric Station of Mace Head, Ireland, from 8 to 28 June 2009. The study is a two-step investigation of the BL structure based (i) on the intercomparison of backscatter profiles from the three laser sensors and (ii) on the comparison of the backscatter profiles with twenty-three radiosoundings performed during the period of 8 to 15 June 2009. The Temporal Height-Tracking (THT) algorithm was applied to the three sensors' backscatter profiles to retrieve the decoupled structure of the BL over Mace Head. The results of the intercomparisons are expressed in terms of the mean correlation coefficients, mean bias (difference between two sensors' detections), mean sigma (the standard deviation of the bias) and the consistency, i.e. the percentage of cases where the detections of the intercompared sensors were closer than 200 m. The ALS300-CHM15K comparison provided the most consistent retrievals amongst the three comparisons with, respectively, the 86.5% and 77.2% of the lower and upper layer detections closer than 200 m and with correlation coefficients equal to 0.88 and 0.83 at the lower and upper layer, respectively. The lidar and ceilometers-detected BL heights were then compared to the temperature profiles retrieved by radiosoundings. The most consistent retrievals at the lower layer are from the ALS300 with the 75% of detections closer than 200 m to the radiosoundings' first temperature inversion. Despite the lower signal-to-noise ratio and R-value compared to the ASL300 and CHM15K, the CL31 is more consistent with the radiosoundings retrievals at the upper layer with 62.5% of detections closer than 200 m to the radiosoundings' second temperature inversion. The ALS300 has larger pulse-averaged power compared to the two ceilometers and better ability in detecting fine aerosol layers within the BL. The comparison of remote and in-situ data proved both the veracity of the inherent link between temperature and aerosol backscatter profiles, and the existence of possible limitations in using aerosols as a tracer to detect the BL structure.
Spatial and temporal variation of CO2 efflux along a disturbance gradient in a miombo woodland in Western Zambia
Authors: Merbold L. , Ziegler W. , Mukelabai M. M. , Kutsch W. L.
Published: January 2011

Abstract. Carbon dioxide efflux from the soil surface was measured over a period of several weeks within a heterogeneous Brachystegia spp. dominated miombo woodland in Western Zambia. The objectives were to examine spatial and temporal variation of soil respiration along a disturbance gradient from a protected forest reserve to a cut, burned, and grazed area outside, and to relate the flux to various abiotic and biotic drivers. The highest daily mean fluxes (around 12 μmol CO2 m−2 s−1) were measured in the protected forest in the wet season and lowest daily mean fluxes (around 1 μmol CO2 m−2 s−1) in the most disturbed area during the dry season. Diurnal variation of soil respiration was closely correlated with soil temperature. The combination of soil water content and soil temperature was found to be the main driving factor at seasonal time scale. There was a 75% decrease in soil CO2 efflux during the dry season and a 20% difference in peak soil respiratory flux measured in 2008 and 2009. Spatial variation of CO2 efflux was positively related to total soil carbon content in the undisturbed area but not at the disturbed site. Coefficients of variation of efflux rates between plots decreased towards the core zone of the protected forest reserve. Normalized soil respiration values did not vary significantly along the disturbance gradient. Spatial variation of respiration did not show a clear distinction between the disturbed and undisturbed sites and could not be explained by variables such as leaf area index. In contrast, within plot variability of soil respiration was explained by soil organic carbon content. Three different approaches to calculate total ecosystem respiration (Reco) from eddy covariance measurements were compared to two bottom-up estimates of Reco obtained from chambers measurements of soil- and leaf respiration which differed in the consideration of spatial heterogeneity. The consideration of spatial variability resulted only in small changes of Reco when compared to simple averaging. Total ecosystem respiration at the plot scale, obtained by eddy covariance differed by up to 25% in relation to values calculated from the soil- and leaf chamber efflux measurements but without showing a clear trend.
Mapping daily evapotranspiration at field to continental scales using geostationary and polar orbiting satellite imagery
Authors: Anderson M. C. , Kustas W. P. , Norman J. M. , Hain C. R. , Mecikalski J. R. , Schultz L. , González-Dugo M. P. , Cammalleri C. , d'Urso G. , Pimstein A. , Gao F.
Published: January 2011

Abstract. Thermal infrared (TIR) remote sensing of land-surface temperature (LST) provides valuable information about the sub-surface moisture status required for estimating evapotranspiration (ET) and detecting the onset and severity of drought. While empirical indices measuring anomalies in LST and vegetation amount (e.g., as quantified by the Normalized Difference Vegetation Index; NDVI) have demonstrated utility in monitoring ET and drought conditions over large areas, they may provide ambiguous results when other factors (e.g., air temperature, advection) are affecting plant functioning. A more physically based interpretation of LST and NDVI and their relationship to sub-surface moisture conditions can be obtained with a surface energy balance model driven by TIR remote sensing. The Atmosphere-Land Exchange Inverse (ALEXI) model is a multi-sensor TIR approach to ET mapping, coupling a two-source (soil + canopy) land-surface model with an atmospheric boundary layer model in time-differencing mode to routinely and robustly map daily fluxes at continental scales and 5 to 10-km resolution using thermal band imagery and insolation estimates from geostationary satellites. A related algorithm (DisALEXI) spatially disaggregates ALEXI fluxes down to finer spatial scales using moderate resolution TIR imagery from polar orbiting satellites. An overview of this modeling approach is presented, along with strategies for fusing information from multiple satellite platforms and wavebands to map daily ET down to resolutions on the order of 10 m. The ALEXI/DisALEXI model has potential for global applications by integrating data from multiple geostationary meteorological satellite systems, such as the US Geostationary Operational Environmental Satellites, the European Meteosat satellites, the Chinese Fen-yung 2B series, and the Japanese Geostationary Meteorological Satellites. Work is underway to further evaluate multi-scale ALEXI implementations over the US, Europe, Africa and other continents with geostationary satellite coverage.