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Your search keyword '"Behrendt, W"' showing total 342 results
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342 results on '"Behrendt, W"'

1. Achievement of Target Gain Larger than Unity in an Inertial Fusion Experiment

Author

Abu-Shawareb, H, Acree, R, Adams, P, Adams, J, Addis, B, Aden, R, Adrian, P, Afeyan, BB, Aggleton, M, Aghaian, L, Aguirre, A, Aikens, D, Akre, J, Albert, F, Albrecht, M, Albright, BJ, Albritton, J, Alcala, J, Alday, C, Alessi, DA, Alexander, N, Alfonso, J, Alfonso, N, Alger, E, Ali, SJ, Ali, ZA, Allen, A, Alley, WE, Amala, P, Amendt, PA, Amick, P, Ammula, S, Amorin, C, Ampleford, DJ, Anderson, RW, Anklam, T, Antipa, N, Appelbe, B, Aracne-Ruddle, C, Araya, E, Archuleta, TN, Arend, M, Arnold, P, Arnold, T, Arsenlis, A, Asay, J, Atherton, LJ, Atkinson, D, Atkinson, R, Auerbach, JM, Austin, B, Auyang, L, Awwal, AAS, Aybar, N, Ayers, J, Ayers, S, Ayers, T, Azevedo, S, Bachmann, B, Back, CA, Bae, J, Bailey, DS, Bailey, J, Baisden, T, Baker, KL, Baldis, H, Barber, D, Barberis, M, Barker, D, Barnes, A, Barnes, CW, Barrios, MA, Barty, C, Bass, I, Batha, SH, Baxamusa, SH, Bazan, G, Beagle, JK, Beale, R, Beck, BR, Beck, JB, Bedzyk, M, Beeler, RG, Behrendt, W, Belk, L, Bell, P, Belyaev, M, Benage, JF, Bennett, G, Benedetti, LR, Benedict, LX, Berger, RL, Bernat, T, Bernstein, LA, Berry, B, Bertolini, L, Besenbruch, G, Betcher, J, and Bettenhausen, R

Subjects
Nuclear and Plasma Physics, Physical Sciences, Indirect Drive ICF Collaboration, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

On December 5, 2022, an indirect drive fusion implosion on the National Ignition Facility (NIF) achieved a target gain G_{target} of 1.5. This is the first laboratory demonstration of exceeding "scientific breakeven" (or G_{target}>1) where 2.05 MJ of 351 nm laser light produced 3.1 MJ of total fusion yield, a result which significantly exceeds the Lawson criterion for fusion ignition as reported in a previous NIF implosion [H. Abu-Shawareb et al. (Indirect Drive ICF Collaboration), Phys. Rev. Lett. 129, 075001 (2022)PRLTAO0031-900710.1103/PhysRevLett.129.075001]. This achievement is the culmination of more than five decades of research and gives proof that laboratory fusion, based on fundamental physics principles, is possible. This Letter reports on the target, laser, design, and experimental advancements that led to this result.

Published
2024

2. Lawson Criterion for Ignition Exceeded in an Inertial Fusion Experiment

Author

Abu-Shawareb, H, Acree, R, Adams, P, Adams, J, Addis, B, Aden, R, Adrian, P, Afeyan, BB, Aggleton, M, Aghaian, L, Aguirre, A, Aikens, D, Akre, J, Albert, F, Albrecht, M, Albright, BJ, Albritton, J, Alcala, J, Alday, C, Alessi, DA, Alexander, N, Alfonso, J, Alfonso, N, Alger, E, Ali, SJ, Ali, ZA, Alley, WE, Amala, P, Amendt, PA, Amick, P, Ammula, S, Amorin, C, Ampleford, DJ, Anderson, RW, Anklam, T, Antipa, N, Appelbe, B, Aracne-Ruddle, C, Araya, E, Arend, M, Arnold, P, Arnold, T, Asay, J, Atherton, LJ, Atkinson, D, Atkinson, R, Auerbach, JM, Austin, B, Auyang, L, Awwal, AS, Ayers, J, Ayers, S, Ayers, T, Azevedo, S, Bachmann, B, Back, CA, Bae, J, Bailey, DS, Bailey, J, Baisden, T, Baker, KL, Baldis, H, Barber, D, Barberis, M, Barker, D, Barnes, A, Barnes, CW, Barrios, MA, Barty, C, Bass, I, Batha, SH, Baxamusa, SH, Bazan, G, Beagle, JK, Beale, R, Beck, BR, Beck, JB, Bedzyk, M, Beeler, RG, Behrendt, W, Belk, L, Bell, P, Belyaev, M, Benage, JF, Bennett, G, Benedetti, LR, Benedict, LX, Berger, R, Bernat, T, Bernstein, LA, Berry, B, Bertolini, L, Besenbruch, G, Betcher, J, Bettenhausen, R, Betti, R, Bezzerides, B, Bhandarkar, SD, and Bickel, R

Subjects
Nuclear and Plasma Physics, Engineering, Physical Sciences, Affordable and Clean Energy, Indirect Drive ICF Collaboration, NSD-Nuclear Data, Mathematical Sciences, General Physics, Mathematical sciences, Physical sciences
Abstract

For more than half a century, researchers around the world have been engaged in attempts to achieve fusion ignition as a proof of principle of various fusion concepts. Following the Lawson criterion, an ignited plasma is one where the fusion heating power is high enough to overcome all the physical processes that cool the fusion plasma, creating a positive thermodynamic feedback loop with rapidly increasing temperature. In inertially confined fusion, ignition is a state where the fusion plasma can begin "burn propagation" into surrounding cold fuel, enabling the possibility of high energy gain. While "scientific breakeven" (i.e., unity target gain) has not yet been achieved (here target gain is 0.72, 1.37 MJ of fusion for 1.92 MJ of laser energy), this Letter reports the first controlled fusion experiment, using laser indirect drive, on the National Ignition Facility to produce capsule gain (here 5.8) and reach ignition by nine different formulations of the Lawson criterion.

Published
2022

7. Aktuelle Aussagen

Author

Kentenich, H., Kauffels, W., Ehret-Wagener, B., Niehues, Chr, Behrendt, W., Heinz, M., Kreienberg, R., van der Ven, K., Bonn, Marzusch, A., Würzburg, Mallmann, P., Köln, Heilmann, Rüsselsheim, U. A., Yeomans, S., Hepp, H., Schmidt-Gollswitzer, K., Berg, Dietrich, editor, Diedrich, Klaus, editor, and Rauskolb, Rüdiger, editor

Published
2000
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23. ITSE database interoperation toolkit

Author

Behrendt, W., Fiddian, N. J., Gray, W. A., Madurapperuma, A. P., Goos, Gerhard, editor, Hartmanis, Juris, editor, van Leeuwen, Jan, editor, Embury, Suzanne M., editor, Fiddian, Nicholas J., editor, Gray, W. Alex, editor, and Jones, Andrew C., editor

Published
1998
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24. Posters

Author

Spapen, H., Diltoer, M., Delanghe, K., Ingels, G., Huyghens, L., Jones, C., Griffiths, R. D., Macmillan, R. R., Harris, C., Atherton, S. T., Nee, P., Köller, M., Wachtler, P., Senkal, M., Kemen, M., König, W., Kompan, L., Berger, M. M., Chioléro, R., Pannatier, A., Cayeux, C., Tappy, L., López Martínez, J., Sánchez Castilla, M., Díaz Abad, R., García Salazar, M. A., Jiménez Martín, M. J., Del Nogal Sáez, F., Leonard, I., Harte, B., Collier, J., Maguire, S., Phelan, D., Xinzhou, Rong, Guangxia, Xiao, Ao, Li, Yaping, Zhang, Briassoulis, G., Venkataraman, S., Thompson, A., Khorram, R., Kauhl, W., Heiden, A., Hettich, R., Behrendt, W., Bitzani, M., Matamis, D., Koletsos, K., Pondikidis, N., Botsios, D., Riggos, D., and Shestopalov, A. Ye.

Published
1996
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33. Ein unerwarteter Nebenbefund

Author

Dittrich, B., primary, Schäfer, A.-O., additional, Bisanz, H., additional, Chahine, L., additional, Behrendt, W., additional, and Hamza, A., additional

Published
2018
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44. Reconstructive surgery for male stress urinary incontinence: Experiences using the ATOMS ® system at a single center

Author

Krause, J, Tietze, S, Behrendt, W, Nast, J, and Hamza, A

Subjects
perineal infection, AMS 800®, lcsh:Surgery, ProAct®, ATOMS® sling, lcsh:RD1-811, Advance® sling, 610 Medical sciences, Medicine, Article, radical prostatectomy, artificial sphincter, Argus® sling, Male Reemex®, ddc: 610, Virtue® sling, sling implants, stress urinary incontinence (SUI), port site infection
Abstract

Objective: To propose possible success-driven solutions for problem and complication rates encountered with the ATOMS® sling system, based on first-hand experience; and to provide possible actual alternative scenarios for the treatment of male stress urinary incontinence (SUI). Patients and methods: During the defined period (between 4/2010 and 04/2014), 36 patients received ATOMS® system implants at our clinic. We collected pre- and post-operative evaluation data using the International Consultation on Incontinence Questionnaire Short Form (ICIQ SF). As an expansion of the questionnaire, we added questions about post-operative perineal pain, the general satisfaction with the results of the intervention and willingness to recommend the operation to a best friend. Results: Our data shows a relatively high explantation rate, but a surprisingly high patient satisfaction rate. Explantation was required mainly due to late onset infections or other symptomatic factors. Compared to other studies early onset infections were rare. Conclusion: A non-invasive, uncomplicated adjustable system to alleviate male stress urinary incontinence remains a challenge. Although there are various systems available for the treatment of male stress urinary incontinence, it seems that despite the advantages of the ATOMS® system, an artificial sphincter system may pose more advantages based on our experience, understanding and knowledge of its well-documented long-term solutions and problems., GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW; 3:Doc15; ISSN 2193-8091

Published
2014
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45. Short-term immunotherapy: A prospective, randomized, double-blind, placebo-controlled multicenter study of molecular standardized grass and rye allergens in patients with grass pollen-induced allergic rhinitis☆☆☆★

Author

Zenner, HP, Baumgarten, C, Rasp, G, Fuchs, T, Kunkel, G, Hauswald, B, Ring, J, Effendy, Isaak, Behrendt, W, Frosch, PJ, Przybilla, B, Brunner, FX, Merk, HF, Kapp, A, Schnitker, J, and Wolf, H

Subjects
Male, Allergy, Time Factors, rye pollen, grass pollen, medicine.disease_cause, Immunoglobulin E, Gastroenterology, Allergen, Immunology and Allergy, Prospective Studies, Nose, biology, food and beverages, Middle Aged, Reference Standards, medicine.anatomical_structure, skin prick rest, Histamine H1 Antagonists, Pollen, Female, specific immunotherapy, Adult, medicine.medical_specialty, Randomization, Adolescent, Immunology, Dose-Response Relationship, Immunologic, specific IgE, Poaceae, Placebo, specific IgG4, Double-Blind Method, Internal medicine, Lolium, otorhinolaryngologic diseases, medicine, Humans, Asthma, short-term immunotherapy, allergic rhinitis, business.industry, Rhinitis, Allergic, Seasonal, Aeroallergen, Allergens, medicine.disease, Desensitization, Immunologic, Immunoglobulin G, biology.protein, business
Abstract

Background: Short-term immunotherapy (STI) can be beneficial for patients who are noncompliant,vith long-term specific immunotherapy. Objective: The efficacy and tolerance of STI with seven pre-seasonal injections of molecular standardized allergens from grass and rye pollen has been investigated in a double-blind, placebo-controlled multicenter study with 87 patients at 12 German University hospitals. Methods: Symptoms of the eyes, nose, and bronchi and use of symptomatic drugs were documented daily in diaries by patients with allergic rhinitis to grass and/or rye pollen and without bronchial asthma. Patients were monitored by skin prick test titration and measurement of levels of specific IgE and IgG4. Results: The median nasal score for the 10 weeks with the strongest symptoms during the gross pollen season was significantly lower (p = 0.014) with 35.0 for STI (n = 41) versus 69.0 for placebo (n = 40); the overall symptom score was 54.0 for STI versus 97.5 for placebo (p = 0.020). Only STI-treated patients exposed to less than 40 pollen grains per cubic meter per week showed a significantly lower nasal symptom score of 39.0 versus 75.0 for placebo (p = 0.006); these patients also had fewer nasal symptoms and less use of topical nasal drugs (p < 0.001). The threshold dose in skin prick tests was significantly higher, being 9.06 histamine equivalent for skin prick test (HEP) for STI-treated patients who received the maximum dose (n = 22) versus 4.33 HEP for placebo (p = 0.005). Specific IgE levels were significantly higher, being 55.9 SU/ml for STI versus 393 SU/ml for placebo after seven injections (p = 0.006) and level of specific IgG4 was 5.36% for STI versus 1.28% for placebo (p < 0.001). No severe systemic reactions were observed. Conclusion: Sn with seven preseasonal injections with molecular standardized allergens is effective and well tolerated.

Published
1997
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