bluuebunny/crossref_metadata_2025_split huggingface dataset:
Über die Dissoziation mehratomiger Salze
Authors: Sasaki Nobuji 
Published: January 2005

AbstractEs wurde am Beispiel von Ferrichloridlösung mathematisch untersucht, wie die Konzentrationen des Moleküls und seiner Dissoziationsprodukte aller Stufen von der Gesamt‐, von der Kationen‐ und von der Anionenkonzentration abhängen.
Potentiometrische Verfolgung der Reduktion von Permanganat durch Ferroion und Jodion
Authors: Müller Erich , Möllering Heinrich 
Published: January 2005

AbstractAus dem Verlauf der Spannungskurven, die bei der potentio‐metrischen Verfolgung der Reduktion von Permanganat mit Ferro‐ und Jodion erhalten werden, konnten verschiedene Schlüsse über deren Verlauf gezogen werden, die auch für die Maßanalyse von Wichtigkeit sind.
Über die Natur des martensitischen Gefügebildes
Authors: Sauerwald F. , Jackwirth G. 
Published: January 2005

AbstractNach der Methode der Schliffglühung im Vakuum und neutralen Salzen und folgender Abschreckung wurde festgestellt, daß mit normaler Ätzung hervorgerufene Martensitstruktur immer nach dem ursprünglichen γ‐Korn orientiert ist, daß immer in 1, 2 oder 3 Systemen auftretende Gleitlinien und Verwerfungserscheinungen auf dem nicht weiter behandelten Schliff auftreten, die in ihrer Orientierung ebenfalls durch das γ‐Korn gegeben sind.
Über ein hochmolekulares Zwischenprodukt der Zersetzung von [Pt en2]J2 durch Säuren
Authors: Schleicher A. , Schmitz W. 
Published: January 2005

AbstractDurch Zusatz von verdünnten Säuren zu Lösungen von [Pt en2]J2 wird zunächst die Bildung eines schwerlöslichen Hydratationsproduktes desselben von der Zusammensetzung: [Pt2 en4J · 12 H2O]J · 5 H2O veranlaßt. Gleichzeitig ausgeschiedenes Jod führt dann erst zur Zersetzung zu PtJ2 und zur Bildung von Äthylendiaminsulfat. Starke Säuren bewirken dieses sofort.
Die Grundlagen der titrimetrischen Schnellbestimmung großer Mengen Mangans mit Hilfe von Phosphormonopersäure
Authors: Heczko Theodor 
Published: January 2005

AbstractDurch Einwirkung von Phosphormonopersäure in saurer Lösung auf Mangansalze entsteht eine gelöste, relativ haltbare Komplexverbindung des dreiwertigen Mangans, an deren Aufbau kondensierte Phosphorsäuren beteiligt sind.
Herstellung und Eigenschaften von Nitriden
Authors: Friederich Ernst , Sittig Lieselotte 
Published: January 2005

AbstractEs wurde gezeigt, daß man aus Oxydkohlegemisch im Stickstoffstrom bei etwa 1200° die bekannten Nitride der Elemente Titan, Vanadin, Bor, Silicium und Lanthan von der Zusammensetzung TiN, VN, BN, Si3N4 und LaN in reinem Zustande erhalten kann.
Über die Verseifungsgeschwindigkeit von Ionenestern
Authors: Brönsted J. N. , Delbanco Agnes 
Published: January 2005

AbstractDie beiden Reaktionsstufen bei der Verseifung der Ester zweibasischer Säuren folgen unter sich verschiedenen Reaktionsgesetzen.Die Verseifung der Ionenester ist ein exponentiell salzempfindlicher Vorgang mit primärer, positiver Salzwirkung.Die Verseifung des Nitrourethanions kann durch die die Reaktion begleitende Stickoxydulentwicklung verfolgt werden. Die Messung der Reaktion ergab zufriedenstellende Übereinstimmung mit der neueren Theorie der Reaktionsgeschwindigkeit.
Untersuchungen über die Löslichkeit des Magnesiumhydroxyds. II. Die Löslichkeitsprodukte und die Dissoziationskonstante der Magnesiumhydroxyde
Authors: Gjaldbaek J. K. 
Published: January 2005

AbstractDie Löslichkeitsprodukte der Magnesiumhydroxyde wurden auf Grund von Versuchen berechnet, die eine elektrometrische Bestimmung der Hydroxylionenaktivität in mit Magnesiumhydroxyd gesättigten Magnesiumchloridlösungen umfassen und ergaben sich bei 18° für stabiles und labiles Magnesiumhydroxyd als 10−10,95 bzw. 10−9,2.
Über Salze und Komplexverbindungen des vierwertigen Vanadiums
Authors: Rosenheim Arthur , yü Mong Hsin 
Published: January 2005

Abstract1. Es wurde gezeigt, daß die Alkalivanadylsulfate sich in siedender Schwefelsäure nach der Gleichung

zersetzen und es wurde demgemäß einerseits kristallisierte Vanadinschwefelsäure der Zusammensetzung:

andererseits eine Reihe schön kristallisierter, in Wasser und verdünnten Säuren ganz unlöslicher Doppelsulfate des dreiwertigen Vanadiums der Zusammensetzung

erhalten. Die hier beschriebenen Verbindungen unterscheiden sich in ihren Eigenschaften von den bisher bekannten Sulfaten des fünfwertigen und Doppelsulfaten des dreiwertigen Vanadiums.
Untersuchungen über Ozon
Authors: v. Wartenberg Hans , v. Podjaski Georg 
Published: January 2005

AbstractMan kann das Ozon in solchen Verdünnungen, wie sie zu Lüftungszwecken benutzt werden, unter Durchsaugen von 1–21 Luft in 5–15 Min. durch 2–3 ccm KJ‐Lösung vollständig absorbieren und mit 5–10% Genauigkeit titrimetrisch bestimmen mit einem leicht zusammenstellbaren Apparat.
Beiträge zur Kenntnis des Systems Eisen‐Zinn
Authors: Wever Franz , Reinecken Walter 
Published: January 2005

AbstractIn Zusammenfassung der Gesamtheit der vorstehend entwickelten Beobachtungen ergeben sich somit als Kennzeichen für das binäre System Eisen‐Zinn ein Eisen‐Zinnmischkristall mit einer Sättigungsgrenze von 18%, eine Verbindung Fe3Sn mit 41,9% Sn, die bei 890° unter Bildung einer zweiten Verbindung FeSn2 mit 81% Sn zerfällt; letztere erfährt bei 780 755 und 49°C polymorphe Umwandlungen.
Die Anwendung von flüssigem Amalgam in der volumetrischen Analyse. VI. Bestimmung von Chromsäure, Ferrieisen und Ferricyanid mittels Titanosulfat
Authors: Someya Kin'ichi 
Published: January 2005

AbstractEz wurde Titanosulfat durch Amalgamverfahren bereitet und bei der Titration von Chromsäure ein Gemisch von Chromsäure und Ferrieisen und von Ferricyanid angewandt, wobei man Diphenylamin als Indicator benutzte.Das Diphenylamin erwies sich auch im Falle von Stannochloridtitration des Ferricyanids anwendbar.
Die Bildung der Gallerten von Vanadiumpentoxyd und anderen anorganischen Stoffen
Authors: Ghosh S. , Chakravarti D. N. , Dhar N. R. 
Published: January 2005

AbstractFeste durchsichtige Gallerten von Vanadiumpentoxyd lassen sich leicht herstellen durch Dialyse eines Sols von Vanadiumpentoxyd.Die Koagulation eines nicht dialysierten konzentrierten Sols von Vanadiumpentoxyd durch Elektrolyte führt zur Bildung einer Gallerte.
Ein Verfahren zur Herstellung großer Kristalle
Authors: Kyropoulos S. 
Published: January 2005

AbstractEs wird ein Verfahren beschrieben zur Herstellung großer, einheitlicher Kristalle aus der Schmelze. Es ist durch Konstanthaltung der Temperatur der Schmelze und einseitigen Wärmeabfluß durch einen Tauchkühler charakterisiert, durch dessen zweckmäßige Handhabung stets die Bildung von Einkristallen erzwungen werden kann.
Zur Kenntnis des Gleichgewichts bei der Reduktion von Chromsesquioxyd und Urandioxyd mittels Kohlenstoffs, sowie bei der Einwirkung von Stickstoff auf Urancarbid
Authors: Heusler Otto 
Published: January 2005

Abstract1. Es wurde gezeigt, daß es möglich ist, im außengekühlten, innenbeheizten, elektrischen Vakuumofen chemische Gleichgewichte zwischen festen und gasförmigen Phasen bei Temperaturen zu messen, deren Höhe die Verwendung eines abgeschlossenen, von außen beheizten Reaktionsraumes nicht mehr gestattet. Die Untersuchung derartiger Gleichgewichte beschränkt sich auf solche Systeme, deren gasförmige Reaktionsteilnehmer permanente Gase und deren feste Phasen bei den anzuwendenden Temperaturen nicht merklich flüchtig sind.
Über eine Methode zur Bestimmung des Polymerisationsgrades des Dampfes im Siedepunkt
Authors: Kirejew Valentin 
Published: January 2005

AbstractDie Vergleichung der Werte des Trouton'schen Koeffizienten, die nach den Verdampfungswärmedaten bestimmt sind, mit den aus den Dampfdruckdaten berechneten, gibt ein Mittel an die Hand, den Polymerisationsgrad des gesättigten Dampfes im Siedepunkte zu bestimmen.Ein gleiches leistet auch die Vergleichung der Werte der ebullioskopischen Konstanten, die experimentell bestimmt wurden, mit den aus Dampfdruckdaten berechneten.Beide Wege geben übereinstimmende Resultate, die für die Essigsäure auch mit dem aus der Dampfdichte berechneten Polymerisationsgrad übereinstimmen.
Die Hydrolyse von Zirkoniumchromat
Authors: Krishnamurti Panchapakisa , Dey Biman Behari 
Published: January 2005

Abstract1. Der Niederschlag von Zirkoniumchromat aus konzentrierten Zirkoniumsalzlösungen mit einem großen Überschuß von Kaliumbichromat scheint zusammengesetzt nach der Formel:

.
Zur Frage der Stabilität des Eisencarbides bei höherem Druck
Authors: Scheil Erich 
Published: January 2005

AbstractEs wird aus den Messungen von F. SAUERWALD auf die Existenz eines Gleichgewichtsdruckes zwischen den Eutektiken γ Fe und Graphit einerseits und γ Fe‐Fe3C andererseits geschlossen und hierfür das p t x Diagramm besprochen.
Modes of social support: The social support behaviors (SS‐B) scale
Authors: Vaux Alan , Riedel Sharon , Stewart Doreen 
Published: January 2005

ConclusionThe SS‐B appears to be a promising measure of five modes of available supportive behavior: emotional support, socializing, practical assistance, financial assistance, and advice/guidance. The measure was designed to assess supportive behavior available from family and from friends. For specific purposes the measure might be modified to tap enacted supportive behavior, as was done in Study 4, or might focus on different sources (cf. Tardy, 1985). Further evidence of the divergence of mode‐specific scales would be valuable and might be demonstrated by comparing samples with mode‐specific deficits, by comparing support received for different problem types (in a more sophisticated fashion than was done here), and by showing differentiated associations between modes of support and various outcome variables. The reliable and valid assessment of specific modes of supportive behavior is an important agenda item in social support research: Such a measure would allow more elaborate theories to be tested, and will undoubtedly prove essential in a complete understanding of social support processes.
Lumping or splitting? “ophthalmoplegia‐plus” or kearns‐sayre syndrome?
Authors: Berenberg R. A. , Pellock J. M. , DiMauro S. , Schotlan D. L. , Bonilla E. , Eastwood A. , Hays A. , Vicale C. T. , Behrens M. , Chutorian A. , Rowland L. P. 
Published: January 2005

AbstractFive new cases and 30 others from the literature were characterized by the clinical triad of progressive external ophthalmoplegia, atypical pigmentary degeneration of the retina, and heart block. The syndrome is sporadic, not hereditary, and begins by the age of 20 years. In many cases there is other evidence of widespread neurological disorder, implicating specific areas: cerebellum; auditory and vestibular systems; skeletal muscle; and, less often, intellectual function or corticospinal tracts. Short stature and delayed sexual maturation are also frequent. The CSF protein content is almost always greater than 100 mg/dl. Spongioform encephalopathy was found in 4 postmortem examinations. In all cases so examined, muscle mitochondria were abnormal.The constancy of these manifestations suggests that the disorder is a true entity, not an artificial subclass of the large group of disorders associated with ophthalmoplegia. Several characteristics suggest that the disorder of neuronal and muscle metabolism is induced by persistent viral infection.The sequence of manifestations may vary, and cardiopathy in particular may be delayed for many years. Patients with ophthalmoplegia, pigmentary degeneration of the retina, and abnormal CSF protein content are likely to develp the full syndrome. This was illustrated by observation of 2 previously reported cases and 1 new one. Because the cardiopathy may be fatal, a pacemaker should be used if indications are appropriate.
Two biochemical types of duchenne dystrophy: Sarcoplasmic reticulum membrane proteins
Authors: Samaha Frederick J. , Congedo Carol Z. 
Published: January 2005

AbstractThe sarcoplasmic reticulum membrane proteins were studied in 10 patients with Duchenne dystrophy by acrylamide gel electrophoresis. Two distinctly abnormal patterns in the distribution of six proteins were identified. Although the patients could be separated biochemically into two groups, no such distinction could be made from the clinical or clinical laboratory findings. The syndrome of Duchenne dystrophy may include at least two biochemically distinct diseases.
Hypertensive putaminal hemorrhage
Authors: Hier Daniel B. , Davis Kenneth R. , Richardson E. P. , Mohr J. P. 
Published: January 2005

AbstractTwenty‐four consecutive cases of putaminal hemorrhage diagnosed by the technique of computerized axial tomography are reported. The anatomy of the hemorrhages as visualized by CT scanning showed excellent correlation with the pathological findings in 3 autopsied patients. The size of the hemorrhage, as measured from the scan, was correlated with the occurrence and severity of several features of the clinical examination and with the clinical outcome. The relatively low overall mortality of 37% reflected the inclusion in this series of many small, nonfatal hemorrhages that would likely have escaped diagnosis before computerized axial tomography became available.
Activation of periodic complexes of subacute sclerosing panencephalitis by sleep
Authors: Westmoreland Barbara F. , Gomez Manuel R. , Blume Warren T. 
Published: January 2005

AbstractThree patients with clinically proved subacute sclerosing panencephalitis (SSPE) had electroencephalograms in which periodic stereotyped complexes characteristic of SSPE were apparent during sleep but were not observed during the initial awake recordings. The first patient had periodic complexes only during sleep. The second and third patients had complexes that were inconstant and sporadic during the awake recordings but regular and periodic during sleep. Although sleep can have a variable effect on the electroencephalographic pattern in SSPE, it may facilitate elicitation of typical periodic complexes in questionable cases of SSPE.
Cerebral infarction complicating subclavian vein catheterization
Authors: Hurwitz Barrie J. , Posner Jerome B. 
Published: January 2005

AbstractCerebral infarction has not previously been reported as a complication of attempted subclavian vein catheterization for parenteral nutrition. Two patients developed clinical and pathological evidence of embolic infarction in the left carotid and left vertebral distributions, respectively, when an artery was inadvertently punctured during attempts to catheterize the left subclavian vein. These two complications occurred in more than 1,000 successful subclavian vein catheterizations.
The adult form of acid maltase (α‐1,4‐glucosidase) deficiency
Authors: Karpatid George , Carpenter Stirling , Eisen Andrew , Aubé Michel , DiMauro Salvatore 
Published: January 2005

AbstractA 31‐year‐old man who had had slowly progressive proximal limb and trunk muscle wasting and weakness for seven years presented with pneumonia related to weak respiratory muscles. Histochemical and electron microscopical study of biopsies from deltoid and quadriceps muscles showed lysosomal storage of glycogen as well as ENnervation and reinnervation, implying primary disease both of muscle and of lower motoneurons. Electromyographic activity suggested a denervating process. Activity of acid λ‐1,4‐glucoside (acid maltase) was severely ENcreased in muscle and urine. Neutral maltase activity and glycogen content were normal in muscle. The findings in this patient suggest that in the adult from of acid maltase deficiency a significant neurogenic component may contribute to muscle wasting and weakness, presumably because of involvement of spinal motoneurons.
Viruslike particles in amyotrophic lateral sclerosis: Electron microscopical study of a case
Authors: Peña Carlos E. 
Published: January 2005

AbstractAutopsy of a 57‐year‐old woman dying from amyotrophic lateral sclerosis (ALS) revealed the characteristic pathological changes of the disease. Ultrastructurally, the main finding was the presence of tubular viruslike particles within the cisterns of the rough endoplasmic reticulum in the neurons of the precentral gyrus and anterior horns of the spinal cord. These particles had a mean diameter of 80 to 85 nm and were composed of a central core and a multilayered wrapping; their morphology was consistent with a rhabdovirus. It is believed that the exclusive location of particles in neurons and the presence of fine structural alterations in these cells, consistent with a cytopathogenetic effect, may indicate a relation between the particle and ALS.
Fibromuscular dysplasia: Multiple “spontaneous” dissecting aneurysms of the major cervical arteries
Authors: Ringel Steven P. , Harrison Stephen H. , Norenberg Michael D. , Austin James H. 
Published: January 2005

AbstractA patient presented clinically with acute bilateral carotid artery thrombosis and at autopsy had fresh dissecting aneurysms of all four major cervical arteries. The underlying vascular disorder was fibromuscular dysplasia. It is suggested that relatively minor injury to vessels already pathologically involved contributed to the multiple dissecting aneurysms in this patient.
The eeg spike: Signal of information transmission?
Authors: Stevens Janice R. 
Published: January 2005

AbstractEnhanced neuronal excitability or coherence, leading to a rapid‐bursting mode of unit discharge or to synchronous polarization, underlies the electroencephalographic spike. The propensity for EEG spike activity to occur in relation to events that require absolute command of neural circuitry suggests that the EEG spike represents a mode of discharge of underlying neural elements which is employed for communication of imperative messages. Normal when confined to certain axial nuclei of the brain during sleep or during photic or sexual excitation, compensatory in response to deafferentation or hypoxia, this powerful transmission mode must have certain advantages to have persisted throughout evolutionary history.
Cerebral necrosis following radiotherapy of extracranial neoplasms
Authors: Rottenberg David A. , Chernik Norman L. , Michael D. F. Deck , Ellis Frank , Posner Jerome B. 
Published: January 2005

AbstractWe have examined 6 patients with delayed cerebral necrosis following irradiation of extracranial neoplasms. Four of the 6 patients received 1,760 rets (or less) tumor dose. The initial symptoms attributable to radiation necrosis appeared 4 to 31 months after irradiation and were those of a focal supratentorial mass. Cerebral angiography delineated an avascular frontal or temporal lesion in all 6 patients; in 1 case a magnification study revealed narrowing, irregularity, and occlusion of small cortical vessels. Four of our 6 patients underwent craniotomy with partial or complete surgical extirpation of necrotic brain tissue. Two operated patients are alive and without disabling neurological symptoms 30 and 25 months, respectively, after the operation. The characteristic neuropathological features of delayed radiation necrosis of brain suggest that vascular injury rather than neuronal or glial damage is of primary pathogenetic significance.
Nonketotic hyperglycinemia: Report of a case and review of the clinical, chemical, and pathological changes
Authors: Slager Ursula T. , Berggren Robert L. , Marubayashi Stanley 
Published: January 2005

AbstractA female infant with neonatal hypotonia and lethargy was found to have nonketotic hyperglycinemia. She died at the age of 5 days. Autopsy revealed slightly retarded myelination and severe spongy change in the well‐myelinated areas of the brain. Analysis of this and the other 26 reported cases suggests that patients with nonketotic hyperglycinemia develop severe mental retardation, not seen in ketotic hyperglycinemia. Elevated glycine levels in the brain and cerebrospinal fluid appear to differentiate these two forms of hyperglycinemia better than the presence of ketosis or leukopenia, and high glycine levels apparently occur in the same areas as the spongy change. While both forms show defective glycine cleavage in the liver, defective glycine cleavage in the brain has been reported only in nonketotic hyperglycinemia.
Huntington's disease: Clinical and chemical effects of choline administration
Authors: Growdon John H. , Cohen Edith L. , Wurtman Richard J. 
Published: January 2005

AbstractCholine (Ch) administration sequentially increases blood Ch, brain Ch, and brain acetylcholine (ACh) levels in the rat and might be useful in Huntington's disease, a brain disorder thought to be associated with deficient cholinergic tone. Ten patients with Huntington's disease took Ch orally (8 to 20 gm per day) after the extent of their disabilities had been documented by clinical examination, movies, and combined electromyogram‐accelerometer recordings. Choline levels in blood and cerebrospinal fluid increased markedly during treatment with Ch, affirming that oral Ch administration increases the amount of ACh precursor delivered to the brain. Although some of the patients exhibited transient improvement in speech, balance, and gait, treatment with Ch failed to bring about consistent or lasting improvement in any of the subjects.
Adenine arabinoside in the treatment of progressive multifocal leukoencephalopathy: Use of virus‐containing cells in the urine to assess response to therapy
Authors: Rand Kenneth H. , Johnson Kenneth P. , Rubinstein Lucien J. , Wolinsky Jerry S. , Penney John B. , Walker Duard L. , Padgett Billie L. , Merigan Thomas C. 
Published: January 2005

AbstractTwo patients with biopsy‐proved progressive multifocal leukoencephalopathy (PML) were treated with near‐maximal doses of adenine arabinoside (Ara‐A), 18.6 and 20 mg per kilogram of body weight per day for 14 days. In both patients, clinical progression of the disease was correlated with an increase in the size of low‐density lesions seen by computerized tomography. One of the patients was observed to excrete abnormal epithelial cells into the urine. These cells contained papovaviruslike particles, and JC virus was cultured from the urine sediment. The relative number of these abnormal cells declined during Ara‐A treatment. Both patients died shortly after the conclusion of therapy without a change in the progression of the central nervous system disease. Systemic administration of Ara‐A did not offer significant clinical benefit in the treatment of these 2 advanced cases of PML.
Comparison of ribosomal subunit proteins from normal human and Huntington's disease skin fibroblasts
Authors: Prashad Nagindra , Rosenberg Roger N. 
Published: January 2005

AbstractThe ribosomal subunit proteins from skin fibroblasts of normal persons and patients with Huntington's disease (HD) were isolated by KCI‐puromycin and by EDTA treatments and were compared by sodium dodecyl sulfate polyacrylamide gel electrophoresis. The data indicate that the ribosomal proteins are identical in control and HD fibroblasts.
Propranolol for the control of belligerent behavior following acute brain damage
Authors: Elliott Frank A. 
Published: January 2005

AbstractThe belligerence of 7 patients who had suffered an acute brain insult was effectively controlled by propranolol in doses of 60 to 320 mg per day. Of the 7 patients, 3 were treated in the acute stage after a stroke, a severe closed head injury, and a gunshot wound of the brain, respectively. A chronic postconcussion syndrome associated with chronic irritability was present in 2, and 2 were not chronically irritable but suffered from intermittent attacks of explosive rage in response to minor irritations. In all instances the belligerent behavior was controlled without inducing general sedation.