Library

X
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
    Miscibility enhancement via ion-dipole interactions. 1. Polystyrene ionomer/poly(alkylene oxide) systems (1984)
    s.l. : American Chemical Society
    Macromolecules 17 (1984), S. 1335-1340 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00137a008
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    A neuropathologic study of Werdnig-Hoffmann disease with special reference to the thalamus and posterior roots (1983)
    Springer
    Acta neuropathologica 60 (1983), S. 99-106 
    Details
    ISSN: 1432-0533
    Keywords: Werdnig-Hoffmann disease ; Sensory involvement ; Thalamus ; Posterior root ; Wrist drop
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The brains of five cases of severe infantile from of Werdnig-Hoffmann (W-H) disease were studied to observe the pathologic changes of sensory neurons and the thalamus. The present study disclosed severe cell loss, chromatolytic degeneration, and empty cell beds of the spinal anterior horn and cranial motoneurons (V, VII, X, XII). Glial bundles were also noted in the anterior roots. In the sensory systems, glial bundles in the posterior roots (2/5), ghost cells in Clarke's column (2/5), and degeneration of the thalamus, mainly in the lateral formation (4/4) were noted. It was demonstrated that not only degeneration of lower motor neurons and glial bundles in the anterior roots, but also degeneration of sensory neurons and thalamus were present in W-H disease. These findings suggested the possibility that W-H disease is a multisystemic disease involving both the anterior and posterior root systems. No sensory involvement was found clinically. Characteristic wrist drop was observed in four cases, two of which also having motor nerve conduction velocity (MCV) delay. On the other hand, MCV of another case without wrist drop was normal. The possibility that wrist drop might be one of the clinical features of peripheral nerve dysfunction was discussed, but further pathologic evaluation of peripheral nerves is needed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00685353
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Central pontine myelinolysis (1981)
    Springer
    Acta neuropathologica 53 (1981), S. 145-153 
    Details
    ISSN: 1432-0533
    Keywords: Central pontine myelinolysis ; Electrolyte disturbances ; Acid-base imbalance ; Extrapontine myelinolysis ; Oligodendrocyte ; Myelin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirty-seven cases of central pontine myelinolysis (CPM) with miscellaneous underlying disorders were found in 1,000 consecutive autopsies, of which 636 brains were examined. The incidence of CPM in this study was 5.8%. The frequent underlying disorders were malignant neoplasms (43%), chronic pulmonary disease (27%), and chronic renal failure cases under dialysis treatment (14%). Fatty liver cirrhosis due to alcohol abuse was recognized in only one CPM case. In the present study, 78% of the CPM cases revealed either electrolyte disturbances or abnormal blood gas data, such as marked deviation of base excess and/or of serum pH in 62.5%, hyper- or hypochloremia (above 115 mEq/l, below 95 mEq/l) in 47%, hyper- or hyponatremia (above 150 mEq/l, below 130 mEq/l) in 25%, marked hypoxemia (less than 40 mmHg) in 12.5% and hypokalemia (below 3.0 mEq/l) in 9% of the CPM cases. The myelinolytic changes were localized in the basis pontis in 14 of 37 CPM cases and in the basis pontis and the cerebral and/or cerebellar white matter (extrapontine myelinolysis) in the remaining 23 cases. The extrapontine changes were also closely related to the electrolyte disturbances or the abnormal blood gas data. The results of this study suggest that myclin and oligodendrocytes in the basis pontis and cerebral and cerebellar white matter are vulnerable to abnormal levels of serum electrolytes and also to marked changes of the acid-base balance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00689995
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Factors influencing the development of Moyamoya Phenomenon (1981)
    Springer
    Acta neurochirurgica 59 (1981), S. 79-86 
    Details
    ISSN: 0942-0940
    Keywords: Moyamoya phenomenon ; carotide artery occlusion ; intracranial vasospasm ; subarachnoid haemorrhage ; ruptured intracranial aneurysm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Both the Moyamoya Phenomenon and occlusion of the internal carotid fork are essential radiological findings in true Moyamoya Disease of unknown aetiology. However, the Moyamoya Phenomenon is often observed in occlusive diseases of the internal carotid bifurcation of known aetiology. The authors recently observed acute development of the unilateral Moyamoya Phenomenon following severe vasospasm of the anterior and middle cerebral arteries due to rupture of an anterior communicating aneurysm. The following four factors have been suspected of contributing to development of the Moyamoya Phenomenon: 1. The chronology of arterial occlusion. 2. Extent and location of occlusion. 3. The cause of occlusion. 4. Anatomical and functional disposition of the basal circulation. As regards the chronology, chronic or slowly progressive arterial stenosis has been thought to be a mandatory factor in development of a Moyamoya network, which plays an important role in the form of collateral channels. However, based on the findings outlined in this paper, the congenital factor may be the most important of the four factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411194
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Evaluation of brain tumour laser surgery (1980)
    Springer
    Acta neurochirurgica 53 (1980), S. 141-149 
    Details
    ISSN: 0942-0940
    Keywords: Laser surgery ; brain tumours ; operative technique
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A surgical carbon dioxide laser unit (laser) has been used since 1977 in twentyfive cases of various brain tumours, including ten meningiomas (four sphenoid ridge, two parasagittal, two falx, one olfactory, one posterior fossa), eleven gliomas (seven glioblastoma, four astrocytoma), two metastatic brain tumours, one haemangioblastoma, and one arteriovenous malformation (AVM). The criteria for laser use, as based on evaluation and location of meningioma, were: grade 1, convenient but adjuvant; grade 2, also necessary; grade 3, indispensable. The laser is obligatory in sphenoid ridge meningioma in order to peel the tumour away from the internal carotid artery, middle cerebral artery, cavernous sinus etc. The grade of necessity for laser use is therefore either 2 or 3. In convexity or parasagittal meningioma, on the other hand, the necessity grade is either 1 or 2. In the glioma group hemorrhage in seven cases of glioblastoma was easily laser-controlled, and the tumours were wasted away in a short time through vaporization, with minimum mechanical effect on adjacent tissue. The laser is therefore very useful in cases of glioma, especially glioblastoma, considering the shortened operating time, decreased blood loss, and extended area of tumour resection. Laser surgery is proposed as being most appropriate, mainly for its vaporizing and coagulating functions, in cases of brain tumour involving the elderly and poor risk cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02074786
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Cytogenetic studies of familial Prader-Willi syndrome (1984)
    Springer
    Human genetics 〈Berlin〉 65 (1984), S. 325-330 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A family in which two first cousins were found to have the Prader-Willi syndrome was investigated cytogenetically. Although G-banding analysis of metaphase chromosomes failed to demonstrate abnormality, close analyses on the fine prometaphase bands by G-banding and the DA-DAPI bands by double stainings revealed a distinct chromosome abnormality in this family. A reciprocal translocation, rep(14:15)(q11.2;q13), was detected in three family members: the mother, the maternal grandmother, and a maternal uncle of the proband. And, the proband and one of the first cousins had an unbalanced translocation that was derived from their carrier parents. The karyotypes of the affected cousins were determined as 46,XY or XX,-15,+der(14),rcp(14;15)(q11.2;q13). Therefore, they were considered to have an identical cytogenetic abnormality: a partial trisomy of the 14pter→q11.2 segment and a partial monosomy of the 15pter→q13 segment. Detailed clinical features of the proband and his affected cousin are described, main features associated with the Prader-Willi syndrome having been observed in both cousins. These observations support a definite relationship between the Prader-Willi syndrome and chromosome 15.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00291556
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Laser-induced polarization anisotropy in In three-level system (1982)
    Springer
    Applied physics 27 (1982), S. 141-144 
    Details
    ISSN: 1432-0649
    Keywords: 42.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We observed a polarization change induced by laser radiation in the Raman-type three-level atom In in the presence of Ar. The observed two components in the polarization change spectrum of the probe beam correspond to the resonant Raman scattering and the luminescence processes in the spontaneous emission. The dependence of their intensities on the collision with Ar atoms agrees with the theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694639
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Anodic characteristics of amorphous ternary palladium-phosphorus alloys containing ruthenium, rhodium, iridium, or platinum in a hot concentrated sodium chloride solution (1983)
    Springer
    Journal of applied electrochemistry 13 (1983), S. 295-306 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Amorphous ternary palladium-based alloys containing platinum group metals as an additional element were prepared by rapid quenching from the molten state and their anodic characteristics were investigated in a 4 mol dm−3 NaCl solution of pH 4 and 80° C. The amorphous alloys containing sufficient quantities of rhodium, platinum or iridium were passivated by anodic polarization and their corrosion rates at high current densities in the chlorine evolution region were extremely low. This fact was attributed to the formation of a highly protective passive film due to both the transformation to the amorphous structure and the addition of rhodium, platinum or indium. The electrocatalytic activities for chlorine evolution of amorphous alloys were higher than those of pure platinum group metals except palladium. In particular, the amorphous Pd41Ir40P19 alloy had the desired stable, high electrocatalytic activity for chlorine evolution and the high overvoltage for oxygen evolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00941601
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    A review of miscibility enhancement via ion-dipole interactionsPresented in part at ACS meeting, St. Louis (April 1984) and reported in macromolecules. (1984)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 24 (1984), S. 1306-1311 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: It is shown that ion-dipole interactions induce considerable miscibility enhancement in blends of styrene ionomers with poly(alkylene oxides). Dynamic mechanical studies, in conjunction with transparency and brittleness of the samples, are used to evaluate miscibility. The effect is clearly thermodynamics in that phase separation can be induced in miscible samples by raising the temperature, with miscibility reestablished ons cooling. The miscibility enhancement in these systems is compared with that resulting from hydrogen bonding. In addition to the styrene/alkylene oxide system, ion-dipole interactions are found to be effective in enhancing the miscibility of many ionic polymer/polar polymer pairs. The ionomers used in this study were styrene lithium methacrylate and ethyl acrylate lithium acrylate copolymers, while polyethers, polysulfides, polyesters, polyimines, and substituted polyethylenses served as polar polymers.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760241707
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...