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341 results on '"Lundin, B."'

55. Munchausen syndrome by proxy - a literature review and Swedish case histories

Author

Lundin, B, Croner, Stefan, Lundin, B, and Croner, Stefan

Abstract

Munchausen syndrome by proxy (MSbP) is a potentially lethal form of child abuse. Mortality rates around 10 percent have been reported. A knowledge of the characteristics of MSbP is needed in order to reveal the diagnosis and to handle the management correctly. Swedish experience is in accordance with international reports.

Published
2001

56. A bicentennial agenda for America

Author

Lundin, B. T

Subjects
General
Abstract

A commencement address is presented. Topics reviewed include politics, technological developments in science as a whole, and the effects of science on human progress. The social ramifications of satellite technology are also reviewed.

Published
1975

62. On the way to the moon

Author

Lundin, B. T

Subjects
Space Sciences
Abstract

Space research and lunar exploration activities reviewed in terms of interdisciplinary results and impact on teaching of science

Published
1966

64. Effect of Operating Conditions and Design on Afterburner Performance

Author

Fleming, W. A, Gabriel, D. S, and Lundin, B. T

Subjects
Aircraft Propulsion And Power
Abstract

Afterburners for turbojet engines have, within the past decade, found increasing application in service aircraft. Practically all engines manufactured today are equipped with some form of afterburner, and its use has increased from what was originally a short-period thrust-augmentation application to an essential feature of the turbojet propulsion system for flight at supersonic speeds. The design of these afterburners has been based on extensive research and development effort in expanded laboratory facilities by both the NACA and the American engine industry. Most of the work of the engine industry, however, has either not been published or is not generally available owing to its proprietary nature. Consequently, the main bulk of research information available for summary and discussion is of NACA origin. However, because industrial afterburner development has closely followed NACA research, the omission is more one of technical detail than method or concept. One principal difficulty encountered in summarizing the work in this field is that sufficient knowledge does not yet exist to rationally or directly integrate the available background of basic combustion principles into combustor design. A further difficulty is that most of the experimental investigations that have been conducted were directed chiefly toward the development of specific afterburners for various engines rather than to the accumulation of systematic data. This work has, nonetheless, provided not only substantial improvements in the performance of afterburners but also a large fund of experimental data and an extensive background of experience in the field. Consequently, it is the purpose of the present chapter to summarize the many, and frequently unrelated, experimental investigations that have been conducted rather than to formulate a set of design rules. In the treatment of this material an effort has been made, however, to convey to the reader the "know how" acquired by research engineers in the course of afterburner studies.

Published
1956

77. Mucosal FOXP3 -Expressing CD4 + CD25 high Regulatory T Cells in Helicobacter pylori -Infected Patients

Author

Lundgren, Anna, primary, Strömberg, Erika, additional, Sjöling, Åsa, additional, Lindholm, Catharina, additional, Enarsson, Karin, additional, Edebo, Anders, additional, Johnsson, Erik, additional, Suri-Payer, Elisabeth, additional, Larsson, Pia, additional, Rudin, Anna, additional, Svennerholm, Ann-Mari, additional, and Lundin, B. Samuel, additional

Published
2005
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82. Passive knee muscle moment arms measured in vivo with MRI

Author

Wretenberg, Per, Németh, G., Lamontagne, M., Lundin, B., Wretenberg, Per, Németh, G., Lamontagne, M., and Lundin, B.

Abstract

Objective: To determine moment arm lengths from seven knee muscles and the patellar tendon. The knee muscles were the biceps femoris, semitendinosus, semimembranosus, gracilis, sartorius, and the lateral and medial gastrocnemius muscles. Design: The moment arms were calculated based on MRI measurements. Background: Moment arm lengths of different muscles with respect to the joint centre of rotation (CR) or the centre of the contact point between joint surfaces are necessary basic data for biomechanical models predicting joint load. Methods: Ten male and seven female subjects participated. Using a 1.5 Tesla magnetic resonance imaging system, 3-dimensional coordinates of relevant points were recorded from a 3-D volume reconstruction of the right knee at knee flexion angles of 0, 30 and 60 degrees. Muscular moment arms were calculated in both the sagittal and frontal planes. The recordings were all made during passive mode, which means that no muscular contraction was performed. Results: All muscles except the lateral gastrocnemius showed statistically significant differences (P<0.05) of moment arm lengths between gender in the frontal plane. All muscles except biceps femoris and sartorius showed significant differences (P<0.05) of moment arm lengths between gender in the sagittal plane. Most muscles also showed a linear or quadratic trend of changing moment arms with varying knee angle. CONCLUSIONS: Our results indicate that for most biomechanical analyses involving knee muscles, gender- and angle-specific moment arms should be used.

Published
1996
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95. Effects of artificially injected electron beams on the characteristics of ground VLF transmitter signals in the ionosphere

Author

Oraevsky, V., primary, Chmyrev, V., additional, Shibaev, I., additional, Dökoukin, V., additional, Sobolev, Ya., additional, Shklyar, D., additional, Lundin, B., additional, Sadovnikov, A., additional, Tischenko, A., additional, Tftiska, P., additional, Jir̆íček, F., additional, Vojta, J., additional, HruŠka, F., additional, and Teodosiev, D., additional

Published
1994
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96. Whistler wave emission by a modulated electron beam

Author

Krafft, C., primary, Thévenet, P., additional, Matthieussent, G., additional, Lundin, B., additional, Belmont, G., additional, Lembège, B., additional, Solomon, J., additional, Lavergnat, J., additional, and Lehner, T., additional

Published
1994
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100. FOXP3-expressing CD4+ T-cell Numbers Increase in Areas of Duodenal Gastric Metaplasia and are Associated to CD4+ T-cell Aggregates in the Duodenum of Helicobacter pylori-infected Duodenal Ulcer Patients.

Author

Kindlund, Bert, Sjöling, Åsa, Hansson, Malin, Edebo, Anders, Hansson, Lars-Erik, Sjövall, Henrik, Svennerholm, Ann-Mari, and Lundin, B. Samuel

Subjects
HELICOBACTER pylori infections, HELICOBACTER pylori, GASTRIC mucosa, GENE expression, GENES, T cells, METAPLASIA, ULCERS, IMMUNOFLUORESCENCE
Abstract

Background: We have previously demonstrated that Helicobacter pylori infection is associated with an increased number of CD4+CD25high regulatory T cells in the gastric and duodenal mucosa. In this study, we determined the number and localization of CD4+ cells expressing the regulatory T-cell-specific transcription factor FOXP3 in the antrum and duodenum of duodenal ulcer patients, asymptomatic carriers, and uninfected individuals. We also determined gene expression levels of FOXP3 as well as anti- and proinflammatory cytokines before and after H. pylori eradication. Methods: Cellular FOXP3 expression was studied by immunofluorescence and flow cytometry, and transcription levels of FOXP3, interleukin (IL)-10, transforming growth factor-β, CD4, and interferon-γ were analyzed by real-time reverse transcription-polymerase chain reaction. Results: We found an increased (6-fold) frequency of CD4+FOXP3+ T cells in H. pylori-infected gastric mucosa; interestingly 26% of these cells did not co-express CD25. The increase of FOXP3-expressing T cells in the antrum of infected individuals was dependent on the presence of H. pylori, since eradication therapy resulted in 4-fold lower levels of FOXP3 and IL-10 mRNA in the antrum. Furthermore, higher numbers of CD4+FOXP3+ T cells were found in areas of duodenal gastric metaplasia in the duodenum of duodenal ulcer patients compared to duodenal gastric metaplasia of asymptomatic individuals and healthy mucosa in both patient groups. In duodenal ulcer patients, the CD4+FOXP3+ T cells were more highly associated to aggregates in the duodenal mucosa. Conclusion: The numbers of CD4+FOXP3+ T cells are increased and localized in CD4+ T-cell aggregates in areas of duodenal gastric metaplasia in duodenal ulcer patients. [ABSTRACT FROM AUTHOR]

Published
2009
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