196,764 research outputs found
Nephopteris Lell., Amer. Fern J.
No full text31.13. Nephopteris Lell., Amer. Fern J. 56: 180 (1966). T.: Nephopteris maxonii Lell.Published as part of Christenhusz, Maarten J. M., Zhang, Xian-Chun & Schneider, Harald, 2011, A linear sequence of extant families and genera of lycophytes and ferns, pp. 7-54 in Phytotaxa 19 on page 46, DOI: 10.11646/phytotaxa.19.1.2, http://zenodo.org/record/489399
Der kleine, deutsche Grammatiker, oder: erster Unterricht in der deutschen Sprache
No full textDER KLEINE, DEUTSCHE GRAMMATIKER, ODER: ERSTER UNTERRICHT IN DER DEUTSCHEN SPRACHE
Der kleine, deutsche Grammatiker, oder: erster Unterricht in der deutschen Sprache ([I])
Cover ( - )
Title page ([I])
Vorrede. ([VII])
Einleitung. ([1])
Allgemeine Vorkenntnisse. (3)
1. Von den Buchstaben. (3)
Fragen und Aufgaben zur Wiederholung. (5)
2. Von der Aussprache einzelner Buchstaben. (6)
Fragen und Aufgaben zur Wiederholung. (10)
3. Von der Bildung und Bedeutung der Wörter. (10)
Von den verschiedenen Arten der Wörter, als Redetheile betrachtet. (14)
Fragen und Aufgaben zur Wiederholung (18)
1. Von dem Geschlechtsworte. (22)
Abänderung des bestimmenden Geschlechtswortes. (23)
Abänderung des nicht bestimmenden Geschlechtswortes. (24)
Fragen zur Wiederhohlung. (25)
2. Von dem Hauptworte. (27)
Fragen und Uebungen zur Wiederhohlung. (28)
Von dem Geschlechte der Hauptwörter. (31)
Fragen zur Wiederhohlung und Aufgaben. (34)
Von der Zahl der Hauptwörter. (35)
Fragen und Aufgaben zur Wiederhohlung. (38)
Von den Endungen der Hauptwörter. (40)
Fragen und Aufgaben zur Uebung. (43)
Von der Abänderung der Hauptwörter. (43)
Fragen und Aufgaben zur Wiederhohlung und Uebung. (47)
3. Von dem Beyworte. (50)
Fragen und Aufgaben zur Wiederhohlung. (51)
Vom Abändern der Beywörter. (52)
Fragen und Aufgaben zur Wiederhohlung. (56)
Von der Steigerung der Beywörter. (58)
Fragen und Aufgaben zur Wiederhohlung und Uebung. (61)
4. Von dem Zahlworte. (64)
Fragen und Aufgaben. (65)
Bestimmende Zahlwörter. (65)
Nicht bestimmende Zahlwörter. (67)
Von der Bildung und Abänderung der Zahlwörter. (67)
Fragen und Aufgaben zur Wiederhohlung und Uebung. (69)
5. Von dem Fürworte. (70)
Fragen zur Wiederhohlung. (72)
Persönliche Fürwörter. (73)
Fragen und Aufgaben zur Wiederhohlung und Uebung. (75)
Zueignende Fürwörter. (77)
Fragen und Aufgaben. (78)
Anzeigende Fürwörter. (78)
Fragen und Aufgaben. (79)
Beziehende Fürwörter. (80)
Fragen und Aufgaben. (81)
Fragende Fürwörter. (82)
Fragen und Aufgaben. (83)
Zur Wiederhohlung. (84)
Anhang. (86)
Etwas von dem Zeitworte. (86)
Etwas vom Nebenworte. (94)
Etwas von dem Vorworte. (95)
Etwas vom Bindeworte. (96)
Zum Schlusse auch noch Etwas vom Empfindungsworte. (97)
Table of contents (99)
Cover ( -
Vergleich der Dignitätsbestimmung von mammographischem Mikrokalk mit zwei Systemen zur digitalen Vollfeldmammographie unterschiedlicher Detektorauflösung
No full textPurpose. The aim of this retrospective clinical study was to compare the diagnostic accuracy of the novel 50 mu m FFDM (full-field digital mammography) system (DR) with an established 70 mu m system (DR) in the differential diagnosis between benign and malignant clusters of microcalcification (n=50) (BI-RADS (TM) T classification 4/5) and to assess the possible incremental value of the 50 mu m pixel-pitch on specificity. Material and methods. From March 2009 to September 2009, 50 patients underwent full-field digital mammography (FFDM) (detector resolution 70 mu m) (Novation, Siemens, Erlangen, Germany). As there were suspicious signs of microcalcification classified with BI-RADS (TM) 4/5 after diagnosis and preoperative wire localization, control images were made with the new FFDM system (detector: resolution 50 mu m) (Amulet, Fujifilm, Tokyo, Japan) with the same exposure parameters. The diagnosis was determined after the operation by five radiologists with different experience in digital mammography from randomly distributed mediolateral views (monitor reading) whose results were correlated with the final histology of all lesions. Results. Histopathology revealed 19 benign and 31 malignant lesions in 50 patients after open biopsy. The results of the five readers showed a higher sensitivity of the new FFDM system (80.0%) in the ability to recognize malignant microcalcification in comparison to the established system (74.8%). The specificity (75.8 versus 71.6%) was slightly higher for the new system but hese results were not statistically significant (p<0.001). Considering the diagnostic accuracy, the new system (detector: resolution 50 mu m) was also slightly superior to the well-known system (detector: resolution 70 mu m) (80.1% versus 76.4%). Conclusions. Our study has shown that the new full-field digital mammography system using the novel detector compared with the already established FFDM system with respect to the assessment of microcalcification is at least equivalent
Erste Untersuchungen zur Detektion simulierter mammographischer Läsionen
No full textPurpose. The article describes an experimental phantom study of a system for digital full field mammography with a new digital detector with a double plate of pure selenium. Materials and methods. The experiments were carried out with the new full field digital mammography system Amulet from FujiFilm. This system has a new detector (18x24 cm(2)) on the basis of highly purified amorphous selenium (a-Se) with a pixel size of 50 mu m. The x-rays are converted into electric signals in the first plate which are read into the second plate with the help of an optical switch and demonstrated in the form of an image. In this way a better pixel size/volume and signal-to-noise ratio should be achieved. The object of the investigation was the Wisconsin Mammographic Random Phantom, Model 152 A (Technical Performance Mo/Mo, 28 kV, 100 mAs). Five investigators with different experiences in mammography each received three images on a monitor with different random positions of the simulated lesions in the phantom for assessment. The detection rates were compared under the same conditions with the results of two other full field digital mammography systems. Results. The median detection rate for all images and investigators for the new doubled plated a-Se detector with optical switch was 98.7%. For both other systems with a-Si or and a-Se detectors the detection rate was 89.8% or 97.3%, respectively. There were no significant differences in the detection rate of the simulated breast lesions for all three systems considering the interobserver and intraobserver variation. Conclusion. The first phantom study for the detection of simulated breast lesions with the new full field digital mammography system Amulet demonstrates equivalent results with the other systems used in the clinical routine. The trend towards superiority of the new system has to be confirmed in further clinical studies
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Comparing the clinical value of spot view mammography with reduced pixel size to monitor zooming by reporting microcalcifications in digital mammography
No full textPurpose: Evaluation of the diagnostic value of breast specimen imaging with a digital mammographic system using a detector system with changeable pixel size compared to standard mode imaging in different monitor display modes. Materials and Methods: Using the digital mammographic system SenoScan (Fischer Imaging, Denver, USA), 50 diagnostic breast specimens with microcalcifications were visualized in both standard mode (pixel size 54 pm) and high resolution mode (pixel size 27 pm). The resulting radiographs were displayed 1:1 on a monitor. Standard mode images (pixel size 54 mu m) were additionally displayed in a 2:1 mode. A total of 5 readers with different mammographic experience analyzed the type of the microcalcifications on the basis of the different display modes. The images were presented randomly. The findings were subsequently compared to the histology. Results: The high resolution mode yielded slightly but not significantly better results than the standard mode on average for all 5 readers. Compared to a sensitivity of 80% and a specificity of 72% (PPV=74%, NPV=78%) in the standard mode, the high resolution mode provided a sensitivity of 86% and a specificity of 74% (PPV = 77%, NPV = 83%). The standard mode images on a 2:1 monitor display yielded 84% and 74% (PPV = 76%, NPV = 82%). Conclusion: The high resolution mode did not significantly increase the sensitivity and specificity of the microcalcification reading. A similar improvement was achieved by the 2:1 display mode, i.e. digital monitor zooming. For the clinical situation this means that there is no diagnostic advantage from using a high resolution target view with this mammographic system
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Experimental investigations for dose reduction by optimizing the radiation quality for digital mammography with an a-Se detector
No full textPurpose: Reduction of radiation exposure at an adequate image quality by optimizing the radiation quality for a new system of full-field digital mammography using a digital detector (a-Se). Materials and Methods: The investigations were performed using a digital mammography system Novation (TM) (Siemens, Erlangen). The system was constructed with a bimetal anode (molybdenum and tungsten) and the possibility of changing the filter (molybdenum/rhodium). The test object was the Wisconsin Mammography Random Phantom Model 152 A (Radiation Measurements Inc.) of which images were acquired using the digital technique with the tungsten anode and rhodium filter at different tube voltages (26-35 kV) and tube loads (40-100 mAs) and compared to images in the molybdan/molybdan molybdenum/ molybdenum technique. To quantify the image quality, we used the detection rate of the simulated lesions in the phantom. Results: Increasing the tube voltage significantly decreases the average glandular dose when using AEC (Automatic Exposure Control), i.e., constant detector dose. At the same time, the image quality decreases significantly with respect to the detection rate (26 K 1 mGy, 95.1%; 35 kV, 0.7 mGy, 82.7%). As a good compromise between the necessary diagnostic image quality and the lowest dose exposition, 28 kV and 60 mAs were selected for imaging with the tungsten/rhodium anode/filter combination. A further change to the tube load did not make sense because a decrease of 10% resulted in a significant decrease in the detection rate while only a 2% increase in detection rate was achieved for a 65% increase in radiation exposure. Conclusion: The results of this phantom study demonstrate that the routine use of the tungsten anode in combination with a rhodium filter for full-field digital mammography with an a-Se detector in contrast to a molybdan/molybdan molybdenum/molybdenum anode/filter combination results in a reduction of the average glandular dose of up to 30% without loss of diagnostic image quality
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