Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 99 (1995), S. 4866-4874 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 99 (1995), S. 12612-12623 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 1437-1445 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In situ high-angle x-ray diffraction (XRD) measurements during an annealing process and extensive low- and high-angle XRD analysis before and after annealing have been performed to study the influence of annealing on the microstructure of a Ni81Fe19/Ag multilayer film. We concentrate on a detailed description and quantification of induced changes in microstructural properties and on changes in the crystalline structure of sublayers. The observed effects obtained from the high-angle XRD, where superlattice structural refinement and standard powder diffraction methods were used, are utilized to model the changes from microscopic point of view. The low-angle XRD reflectivity measurements were analyzed using a new distorted-wave Born approximation approach which enables to get information about interlayer structure parameters such as interface roughnesses, degree of vertical correlation and lateral correlation length. The presented low-angle and high-angle analysis demonstrates general applicability of x-ray diffraction for complex and quantitative in-situ investigation of structural changes in metallic multilayers during annealing. An effect of lateral scaling for different types of roughness is discussed and a general approach is shown for the case of metallic multilayers. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Macromolecules 28 (1995), S. 5465-5476 
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Der Chirurg 69 (1998), S. 412-417 
    ISSN: 1433-0385
    Keywords: Key words: Lung cancer ; Lymph node dissection ; Staging ; Therapy. ; Schlüsselwörter: Bronchialcarcinom ; Lymphknotendissektion ; Staging ; Therapie.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. Die Lymphknotendissektion ist im Hinblick auf die Stadienzuordnung fester Bestandteil der in kurativer Absicht vorgenommenen Operation bei Bronchialcarcinom. Tumorbefall ipsilateraler mediastinaler Lymphknoten (N2) ist mit einer schlechten Prognose vergesellschaftet. Da die meisten Patienten mit N2-Situation innerhalb 3 Jahren nach Operation an Fernmetastasen versterben, muß angenommen werden, daß ein Befall mediastinaler Lymphknoten bereits Ausdruck einer Generalisation der Tumorerkrankung ist. Daher ist einerseits die Wahrscheinlichkeit eines therapeutischen Effekts einer ausgedehnten Lymphknotendissektion gering, andererseits die Evaluation und Anwendung einer zusätzlichen systemischen Therapie gerechtfertigt.
    Notes: Summary. Any operation for lung cancer that is planned as curative includes dissection of the lymph nodes in the mediastinum in order to allow correct staging of the disease. It is well known that ipsilateral lymph node metastases (N2) mean a poor prognosis. Since most patients with this finding die from metastatic tumor progression within 3 years after the operation, it can be assumed that positive findings in the mediastinal lymph nodes represent generalization of the cancer. Therefore, the probability of a therapeutic effect from more radical removal of lymph nodes in the mediastinum is rather low. On the other hand, it is justified to apply and evaluate additional systemic treatment in these tumor stages.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1433-0385
    Keywords: Key words: Bronchial carcinoma ; Lymphadenectomy ; Staging. ; Schlüsselwörter: Bronchialcarcinom ; Lymphknotendissektion ; Tumorstadieneinteilung.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. Trotz der Bedeutung des Lymphknotenbefalls für die Klassifikation und Prognose des Bronchialcarcinoms fehlt es bis heute an Standards, nach denen die Qualität der Dissektion zu beurteilen ist. Eine alle ipsilateralen Lymphknotenstationen umfassende Dissektion wird vielerorts nicht für notwendig erachtet. Bei 270 konsekutiven Patienten mit nicht-kleinzelligem Bronchialcarcinom der UICC Stadien (1987) I (n = 115), II (n = 42) und IIIa (n = 113) wurde im Rahmen der kurativen Operation eine vollständige ipsilaterale Lymphknotendissektion durchgeführt, um zu überprüfen, ob eine Beziehung zwischen Ort des Primärtumors und dem Lymphknotenbefallsmuster besteht. In der Gruppe mit N1-Befall (n = 61) zeigten Patienten mit ausschließlich intrapulmonalem Lymphknotenbefall eine höhere 5-Jahres-Überlebensrate (39 %) als die Gruppe mit hilärem oder intrapulmonal/hilärem Befall (21 %). Bei Patienten im Stadium N2 (n = 68) wurde beim Adenocarcinom die hiläre Lymphknotenstation in bis zu 81 % übersprungen. Von den 333 entnommenen Lymphknotenstationen in der Gruppe mit N2-Befall waren 132 infiltriert. Von der Tumorlokalisation oder -größe ließen sich keine Rückschlüsse auf das Befallsmuster der Lymphknoten ziehen. Aufgrund der Variabilität des Lymphknotenbefalls und wegen der Häufigkeit von übersprungenen Lymphknotenstationen („skip metastasis“) ist für kurative Operationen grundsätzlich eine vollständige Dissektion zu fordern.
    Notes: Summary. Despite the important role of lymph node infiltration for the classification and prognosis of non-small-cell lung cancer (NSCLC), no standards exist to evaluate the quality of mediastinal lymphadenectomy. Researches at several centers are not convinced that complete ipsilateral lymphadenectomy is necessary. We investigated 270 consecutive patients undergoing a potential curative operation for NSCLC including complete ipsilateral lymph node dissection in order to ascertain whether or not there is a correlation between tumor localization and lymph node infiltration. Patients were classified into the UICC (1987) stages I (n = 115), II (n = 42), and IIIa (n = 113). In patients with N1-positive lymph nodes (n = 61) we found higher 5-year survival for patients with only intrapulmonary lymph node infiltration (39 %) than for patients with hilar infiltration (21 %). Patients with N2 disease showed skip metastases in up to 81 % of cases. We found that no tumor location predicted the lymph node infiltration. Due to the variability of lymph node infiltration and the frequently occurring skip metastases, complete ipsilateral lymphadenectomy should be the standard for curative operations for NSCLC.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 0930-9225
    Keywords: Schlüsselwörter Herzchirurgie – multiples Organversagen (MOF) – akutes Atemnotsyndrom des Erwachsenen (ARDS) – Systemic inflammatory response syndrome (SIRS) – Xanthinderivate ; Key words Cardiac surgery – multiple organ failure (MOF) – adult respiratory distress syndrom (ARDS) – systemic inflammatory response syndrome (SIRS) – xanthine derivatives
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The potential therapeutic effect of intravenous 3,7-dimethyl-1-(5-oxohexyl)xanthine (Pentoxifylline) in patients at risk for developing multiple organ failure following major cardio-thoracic surgery was assessed. Forty petients having APACHE II score values ≥19 at the first postoperative day after major cardio-thoracic surgery were randomized into two groups to receive either placebo (Control; n=25) or intravenous pentoxifylline (1.5 mg/kg/h) treatment (Pentoxifylline; n=15) as an adjunct to standard supportive therapy. The control group patients as compared to pentoxifylline treated patients required a longer period of time of ventilator support (8.3±3.1 days vs. 3.1±0.9 days; p〈0.05), experienced a higher incidence of renal failure (days on dialysis/hemofiltration: 6.8±3.3 vs 1.2±0.8; p〈0.05) and a longer ICU stay (11.4±3.1 vs. 5.2±1.1 days; p〈0.05). Overall mortality was not different between treatment groups. The results of this first clinical pilot study suggest that supplemental intravenous pentoxifylline treatment may decrease the incidence of acute lung injury and renal failure in patients after cardiac surgery.
    Notes: Zusammenfassung In einer ersten klinischen Pilotstudie wurde die Wirksamkeit einer kontinuierlichen intravenösen Infusion des Xanthinderivates Pentoxifyllin zur Reduktion der Inzidenz des akuten Lungenversagens bei Hochrisiko-Patienten nach großen herzchirurgischen Eingriffen untersucht. Unter 816 konsekutiv operierten Patienten wurden 40 Patienten mit einem hohen Risiko für die Entwicklung eines Multiorganversagens anhand des APACHE II Scores (≥19) am ersten postoperativen Tag identifiziert. Die Patienten wurden in zwei Gruppen randomisiert: Standard-Behandlung (Kontrolle n=25) oder Standard-Behandlung+Pentoxifyllin-Therapie (Pentoxifyllin n=15). Primäre Studienendpunkte waren die Dauer der Beatmungspflichtigkeit, die Inzidenz eines akuten Nierenversagens (Dialyse-/Hämofiltrationspflichtigkeit) und die Verweildauer auf der Intensivstation. Die Ergebnisse von 37 der 40 Patienten konnten ausgewertet werden. Die Pentoxifyllin-Therapie (kontinuierliche intravenöse Infusion von 1,5 mg/kg/h) wurde gut toleriert; es wurden keine anhaltenden signifikanten Nebenwirkungen beobachtet. Die Dauer der Beatmung war signifikant kürzer in der Pentoxifyllin-Gruppe (3,1±0,9 die) als in der Kontrollgruppe (8,3+3,1 die, p=0,037) Im Vergleich zu den mit Pentoxifyllin behandelten Patienten trat bei den Kontroll-Patienten häufiger ein therapiepflichtiges Nierenversagen auf (Dialysetage 6,8±3,3 vs. Pentoxifyllin-Gruppe: 1,2+0,8 die, p=0,048). Die Verweildauer auf der Intensivstation war signifikant kürzer bei den Pentoxifyllin-behandelten Patienten (5,2±1,1 vs. 1,4±3,1 die; p〈0,05). Die Gesamtletalität betrug 36% in der Kontrollgruppe und 33% in der Pentoxifyllin-Gruppe und war nicht signifikant unterschiedlich. Zusammengefaßt konnten wir in dieser ersten klinischen Pilotstudie zeigen, daß eine kontinuierliche Infusion von Pentoxifyllin bei Hochrisiko-Patienten nach großen herzchirurgischen Eingriffen die Inzidenz des akuten Lungen-, und Nierenversagens reduzieren kann.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 63 (1996), S. 117-121 
    ISSN: 1432-0630
    Keywords: 81.60.B ; 79.20D
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The ablation process of thin copper films on fused silica by picosecond laser pulses is investigated. The ablation area is characterized using optical and scanning electron microscopy. The single-shot ablation threshold fluence for 40 ps laser pulses at 1053 nm has been determinated toF thres = 172 mJ/cm2. The ablation rate per pulse is measured as a function of intensity in the range of 5 × 109 to 2 × 1011 W/cm2 and changes from 80 to 250 nm with increasing intensity. The experimental ablation rate per pulse is compared to heat-flow calculations based on the two-temperature model for ultrafast laser heating. Possible applications of picosecond laser radiation for microstructuring of different materials are discussed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 63 (1996), S. 117-121 
    ISSN: 1432-0630
    Keywords: PACS: 81.60.B; 79.20.D
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract.  The ablation process of thin copper films on fused silica by picosecond laser pulses is investigated. The ablation area is characterized using optical and scanning electron microscopy. The single-shot ablation threshold fluence for 40 ps laser pulses at 1053 nm has been determinated to F thres=172 mJ/cm2. The ablation rate per pulse is measured as a function of intensity in the range of 5×109 to 2×1011 W/cm2 and changes from 80 to 250 nm with increasing intensity. The experimental ablation rate per pulse is compared to heat-flow calculations based on the two-temperature model for ultrafast laser heating. Possible applications of picosecond laser radiation for microstructuring of different materials are discussed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 68 (1999), S. 197-201 
    ISSN: 1432-0630
    Keywords: PACS: 36.40; 68.35; 81.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 2 clusters with about 1000 molecules per unit charge are accelerated to up to 120 keV kinetic energy for mask projective surface bombardment. Patterning is achieved via physical as well as chemical surface erosion. Very smooth eroded surfaces result for bulk natural diamond, silicon, and glass. Polycrystalline, strongly faceted CVD diamond films are effectively planarized. Submicron structures with various wall inclinations can be generated. Atomic force microscopy of individual impact structures reveals nanometer-sized hillocks instead of craters. The collective motion of the impacted surface material is considered crucial for the cluster impact-induced nanomodifications. Atomic ion beam lithography is considered for comparison.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...