Search Results - (Author, Cooperation:H. Lang)

2018-08-17

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Geosciences

Computer Science

Medicine

Natural Sciences in General

Physics

Botany, Ecology, Online Only

2011-03-12

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Computer Science

Medicine

Natural Sciences in General

Physics

article

1980

Jugend ; Psychose ; Schizophrenie ; Jugendreligion ; Psychiatrie

Der Nervenarzt, Bd. 51 (1980) H. 3, S. 183-187, 0028-2804

German

Literaturangaben

article

1994

Spielregel ; Ballsport ; Mannschaftsspiel ; Schulsport ; Sport ; Sportunterricht ; Volleyball ; Freizeitsport

Lehrhilfen für den Sportunterricht, (1994) H. 10, S. 157-158, 0342-2461

German

article

1999

Didaktische Grundlageninformation ; Diskuswerfen ; Dreisprung ; Hammerwerfen ; Hochsprung ; Kugelstoßen ; Laufen ; Leichtathletik ; Speerwerfen ; Sport ; Staffellauf ; Stoßen (Sport) ; Weitsprung ; Werfen ; Regel

Lehrhilfen für den Sportunterricht, Bd. 48 (1999) H. 4, S. 64, 0342-2461

German

1525-1314

Blackwell Publishing Journal Backfiles 1879-2005

Geosciences

The Sanddal mafic-ultramafic complex (SMUK) is a cluster of variably eclogitised mafic and ultramafic bodies that comprise the westernmost known eclogite facies locality in the North-East Greenland eclogite province (NEGEP). Although there are no true eclogites in the SMUK, we interpret three distinct textural types of plagioclase replacement to record sequential stages in adjustment of SMUK olivine gabbro-norites to eclogite facies conditions. The earliest stage, in which plagioclase was replaced by omphacite/spinel symplectite before nucleation of garnet (Type 1A & 1B) has not previously been described. Documentation of this texture provides clear evidence that, at least in some cases, garnet nucleation is delayed relative to nucleation of omphacite and is a rate-limiting step for eclogitisation. Type 1C domains were produced by scattered nucleation of garnet in the same sample. In Type 2 domains, plagioclase was replaced by a layered corona with an outer layer of garnet, an inner layer of omphacite and an interior of inclusion-rich plagioclase. In Type 3 domains, the omphacite layer was overgrown by the garnet rim, and omphacite is preserved only as inclusions in garnet. In more coarse grained leucogabbros, recrystallization was more complete, plagioclase replacement textures were less localised, and could not be divided into distinct stages. Plagioclase replacement in SMUK samples was not isochemical, and required diffusion of at least Mg and Fe from replacement of mafic phases in the surroundings. Strong compositional gradients in garnet reflect disequilibrium and were controlled by the different diffusion rates of Mg/Fe and Ca, different local chemical environments, and progress of the plagioclase breakdown reaction. The presence of small amounts of hydrous minerals (amphibole, phlogopite and clinozoisite) in local equilibrium in plagioclase domains of most SMUK samples indicates that a small amount of H2O was present during high pressure metamorphism.

Electronic Resource

1525-1314

Blackwell Publishing Journal Backfiles 1879-2005

Geosciences

Poikiloblastic index minerals in pelitic rocks from the Orrs Island–Harpswell Neck area of coastal Maine contain inclusion textures that indicate sequential growth of progressively higher grade metamorphic minerals during development of a near-vertical crenulation foliation. The sequence of zones in the field is garnet, staurolite, staurolite–andalusite, staurolite–sillimanite and sillimanite. Inclusion fabrics characteristic of different stages in crenulation cleavage development indicate that index minerals nucleated and grew sequentially: biotite began to grow before deformation, garnet began to grow during early stages of crenulation cleavage development, staurolite grew during intermediate stages, and andalusite grew relatively late, when transposition of the foliation was nearly complete. Muscovite pseudomorphs and sillimanite were mainly post-kinematic. The fact that metamorphic index minerals grew sequentially in individual rocks in the same order in which they appear across the field area indicates that the high temperature part of the pressure–temperature path was similar to the metamorphic field gradient.Metamorphism in the Orrs Island–Harpswell Neck area is consistent with the magmatic heating model that has been proposed for western Maine. Sequential development of index minerals in pelitic rocks in the Orrs Island–Harpswell Neck area apparently resulted from sequential nucleation after substantial overstepping of mineral-forming reactions. Once nucleation of an index mineral had taken place, initial growth was rapid and poikiloblasts preserved inclusion trails characteristic of the prevailing stage of crenulation cleavage development. Because nucleation of sillimanite may have required more overstepping of the andalusite–sillimanite reaction than nucleation at dehydration reactions, determination of metamorphic conditions for rapidly heated rocks such as these by comparison with a petrogenetic grid is problematic. Garnet zoning patterns in these rocks should reflect the fact that growth of garnet interiors occurred early during metamorphism in equilibrium with a low-grade assemblage. Only garnet rims would be expected to record the subsequent pressure–temperature path.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

We report the growth of extremely flat YBa2Cu3O7−x (YBCO) films onto NdGaO3 substrates by liquid-phase epitaxy (LPE). Macroscopic growth spirals with large interstep distances (several μm) and with hollow cores are observed by optical (Nomarski) microscopy and by atomic force microscopy, in contrast to the microscopic spiral islands formed in epitaxy from the vapor phase. Typical step heights of LPE-grown YBCO vary between monosteps (1.2 nm) and 7.2 nm. Extremely flat epitaxial YBCO surfaces with continuous step flow have been achieved. They are of interest for fundamental physical studies (gap, photoemission) and for a reliable high-temperature superconductivity tunnel-device technology.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

The growth of (001) oriented YBa2Cu3O7−δ films on LaAlO3(100) has been studied by scanning tunneling microscopy. Using a special half-shadow technique different growth stages have been obtained simultaneously on a single substrate crystal: nucleation and spreading of two-dimensional islands, their coalescence and growth, formation of well-developed growth hills and finally of a continuous film. The growth steps were determined to be one unit cell spacing in height regarding the crystallographic c-axis.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

Single-crystalline Mg2TiO4 layers have been employed as a novel substrate material for superconducting YBa2Cu3O7−δ (YBCO) thin films. The Mg2TiO4 substrate layers have been grown on MgO cleavage faces by a solid-state reaction between the MgO crystal and TiO2 vapor. The structure and morphology of laser-deposited YBCO thin films have been studied by x-ray diffraction, transmission electron microscopy, electron diffraction, and scanning tunneling microscopy. YBCO has been grown on Mg2TiO4(001) with the epitaxial relationship [100](001) YBCO (parallel)[100](001)Mg2TiO4 and (considering twins)(parallel)[010](001)Mg2TiO4. The film morphology is characterized by growth spirals originating from screw dislocations.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

Sequential position readout from a microfabricated array of eight cantilever-type sensors (silicon technology) is demonstrated. In comparison with single sensors we find that mechanical disturbances from noise, such as from vibrations, turbulent gas flow, or abrupt pressure changes, can be effectively removed in array sensors by recording difference signals with respect to reference cantilevers. We demonstrate that chemically specific responses can be extracted in a noisy environment using a sensor to detect specific chemical interactions and an uncoated cantilever as reference. © 1998 American Institute of Physics.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

The ability to modify the stacking sequence of ultrathin films offers a unique way to change either the interaction strength or the doping, but demands a careful control of each atomic monolayer. Progress is hampered by the lack of a direct method that allows differentiation on a local scale between the various terminating layers of a crystal. Here, the combination of a vacuum annealing process and friction force microscopy reveals this local distinction on a SrTiO3 surface. Using the friction contrast, we find how the terminating layer of a single crystal profoundly influences the terrace edge structure. © 1998 American Institute of Physics.

Electronic Resource

1365-2036

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Background : Irritable bowel syndrome is a common condition seen in Western countries. In Asia, however, it is less known and even less studied.Aim : To determine the prevalence and social impact of irritable bowel syndrome as well as the health-seeking behaviour of irritable bowel syndrome patients in TaiwanMethods : Using the modified Rome II questionnaire, a survey was carried out in a population receiving physical check-up (n = 2865).Results : The prevalence of irritable bowel syndrome in Taiwan was 22.1% and 17.5% (κ = 0.73) according to the Rome II and I criteria, respectively. No gender difference was found between subjects with and without irritable bowel syndrome symptoms. Irritable bowel syndrome subjects were likely to undertake an excessive number of physician-visits (P 〈 0.01). Such subjects were often absent from work/school, with more days of absenteeism than irritable bowel syndrome-free subjects (P 〈 0.01). They also suffered obvious sleep disturbance (P 〈 0.01). Nearly half of the irritable bowel syndrome subjects were ‘consulters’, and they were more likely to have frequent physician-visits, suffer from work/school absenteeism, and endure sleep disturbance and bowel symptoms than irritable bowel syndrome nonconsulters (P 〈 0.05).Conclusions : Irritable bowel syndrome is common in a Chinese population of Taiwan. Similar to irritable bowel syndrome in the West, it also involves significant social and medical burdens. However, in the irritable bowel syndrome subjects of Taiwan there is no gender difference, and more irritable bowel syndrome subjects will seek physician consultations, which may be due to Taiwan's easily accessible and affordable heath care facilities.

Electronic Resource

1365-2036

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Background : Little is known about the gender effect on irritable bowel syndrome in Asia.Aim : To assess the gender difference in Chinese subjects with irritable bowel syndrome meeting Rome II criteria.Methods : Irritable bowel syndrome was identified from an apparently healthy adult population receiving a routine health maintenance program (n = 2018).Results : Female gender is not a factor associated with irritable bowel syndrome or irritable bowel syndrome-related health care-seeking behaviour. Female irritable bowel syndrome subjects, irrespective of consulting behaviour for irritable bowel syndrome, are likely to have 〈3 bowel movements/week, hard/lumpy stools and abdominal fullness/bloating (P 〈 0.05). Female irritable bowel syndrome subjects are prone to be absent from school/work with more days of absenteeism, irrespective of consultation status (P 〈 0.05). Only female irritable bowel syndrome consulters have more absenteeism for their irritable bowel syndrome-related symptoms, reporting more sleep disturbances than their male counterparts (P 〈 0.001).Conclusions : In an apparent healthy adult population in Taiwan, gender difference is present in Rome II defined Chinese subjects with irritable bowel syndrome as regards bowel symptoms, social impact and sleep quality. Female predominance was not found in irritable bowel syndrome subjects and irritable bowel syndrome-related health care-seeking behaviour in the current population. Both irritable bowel syndrome non-consulters and consulters have similar gender difference profiles in presenting symptoms, suggesting that bowel symptoms per se may not be the only factor leading to health care-seeking behaviour. The gender differences in sleep problems were observed solely in irritable bowel syndrome consulter.

Electronic Resource

1365-2036

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Background : Little is known about the social and medical burdens of heartburn in Asia.Aim : To assess the impact of heartburn in Taiwan.Methods : We applied a questionnaire to 2018 apparently healthy adult Chinese receiving a routine health maintenance programme. Costs of heartburn-related prescriptions were obtained from the Bureau of National Health Insurance of Taiwan.Results : Heartburn prevalence (〉1 episode/week) was 7%. Smoking and increased body mass index were associated with heartburn occurrence. Heartburn sufferers reported more atypical gastro-oesophageal reflux disease symptoms, e.g. chest pain, dysphagia and globus. They were more likely to consult physicians, and have an increased frequency and number of days of absenteeism, irrespective of upper gastrointestinal or nongastrointestinal-related illnesses. They experienced sleep disturbances more frequently. The 62 heartburn consulters (48%) were more likely to have co-existing globus, visited physicians more, had more absenteeism, suffered from more sleep disturbances and had higher costs for antacids, proton pump inhibitors, hypnotic/sedatives, tranquilizers and antidepressants than nonconsulters.Conclusions : Heartburn prevalence in Taiwan is lower than in Western countries. Nevertheless, heartburn in Taiwanese creates a significant burden in terms of social impact, health resource utilization, sleep quality and pharmaceutical costs. The increased costs of psychoactive drugs in consulters suggest that anxiety/depression affects their health-seeking behaviour.

Electronic Resource

0167-4781

(Strep. hygroscopicus) ; Chromosome structure ; DNA-binding protein

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Biology

Chemistry and Pharmacology

Medicine

Physics

Electronic Resource

0005-2787

DNA conformation ; DNA damage ; Ultraviolet irradiation

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Biology

Electronic Resource

0020-1693

Amide compounds ; Benzotriazole compounds ; Lithium compounds

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Electronic Resource

0301-4622

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Biology

Chemistry and Pharmacology

Physics

Electronic Resource

0301-4622

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Biology

Chemistry and Pharmacology

Physics

Electronic Resource