Search Results - (Author, Cooperation:Weese)

article

2022

Medieneinsatz ; Unterrichtsgestaltung ; Unterrichtsplanung ; Lernmittel ; Technologieunterstütztes Lernen ; Unterrichtsmaterial ; Digitalisierung ; Schulsport ; Sportpädagogik ; Sportunterricht

SportPraxis. Sonderheft, (2022) H. 2022, S. 35-38, 0173-2528

0176-5906

German

article

1997

Längsschnittuntersuchung ; Angst ; Bezugsgruppe ; Selbstkonzept ; Regelklasse ; Schüler ; Eingliederungsklasse ; Aussiedlerkind ; Flüchtling

Zeitschrift für Entwicklungspsychologie und pädagogische Psychologie, Bd. 29 (1997) H. 3, S. 197-211, 0049-8637

German

Literaturangaben

2018-03-09

Wiley-Blackwell

0270-4137

1097-0045

Medicine

Online

2022

Globalisierung ; Erwachsenenbildung ; Internationaler Vergleich ; PIAAC (Programme for the International Assessment of Adult Competencies)

Studies in continuing education, Bd. 44 (2022) H. 1, S. 14-38, 1470-126X

English

2018-06-20

National Academy of Sciences

0027-8424

1091-6490

Biology

Medicine

Natural Sciences in General

2018-07-04

National Academy of Sciences

0027-8424

1091-6490

Biology

Medicine

Natural Sciences in General

2018-09-26

American Physical Society (APS)

0031-9007

1079-7114

Physics

2018-10-16

The American Association for Cancer Research (AACR)

1078-0432

1557-3265

Medicine

1089-7550

AIP Digital Archive

Physics

A detailed analysis of the photoinduced current transients of differently grown CdTe:Cl samples was performed in the 100–140 K range in order to investigate the influence of different growth techniques (sublimation, Bridgman method, and traveling heater method) on compensation defects. While studying the experimental results the analysis of the transients turned out to be a crucial point. With the conventional two-gate technique only one trap with misleading trap parameters could be identified in each sample. Analyzing the transients with the regularization method proposed recently [C. Eiche, D. Maier, M. Schneider, D. Sinerius, J. Weese, K. W. Benz, and J. Honerkamp, J. Phys. Condens. Matter 4, 6131 (1992)], three traps could be identified in each sample. Only one of these traps leads to an activation energy and a cross section approximately the same for the different samples. The other two traps of each sample depend on the growth technique.

Electronic Resource

1089-7690

AIP Digital Archive

Physics

Chemistry and Pharmacology

In photon correlation spectroscopy, a time correlation function of the scattered light intensity is measured. Among other parameters, the relaxation time spectrum can be calculated from such measurement. This is usually done in two steps. First, the scattered field time correlation function is determined. In the second step, the relaxation time spectrum is calculated by solving a linear integral equation with Tikhonov regularization. With an adequate error model and a nonlinear regularization method, the analysis of photon correlation spectroscopy data can be improved considerably. We give a description of the improved method and illustrate its advantages.

Electronic Resource

1524-4741

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Electronic Resource

1089-7550

AIP Digital Archive

Physics

There are several experimental methods which give information about the thermal relaxation times of the deep levels in a semiconductor. Analyzing the temperature dependence of the relaxation times, the activation energy and the cross section of the corresponding deep levels can be determined. An essential problem of such methods is the identification of the relaxation times in the measured signal. In the context of time-dependent measurements such as photoinduced current transient spectroscopy and deep level transient spectroscopy, Tikhonov regularization was recently proposed as a high resolution method for this purpose. In this contribution it is proposed to apply Tikhonov regularization in order to identify the thermal relaxation times in admittance spectroscopy data. The method is tested and discussed using simulated data. Finally, admittance spectroscopy data of a GaAs diode are analyzed. The results demonstrate that the resolution of an ordinary admittance spectroscopy setup can considerably be improved by the application of Tikhonov regularization. © 1995 American Institute of Physics.

Electronic Resource

1089-7550

AIP Digital Archive

Physics

It is shown that a recently proposed analysis of deep level transient spectroscopy signals with a regularization method by Batovski et al. [J. Appl. Phys. 74, 291 (1993)] can be simplified significantly by calculating the relaxation time spectrum of the capacitance transient with a regularization method directly.

Electronic Resource

1750-3841

Blackwell Publishing Journal Backfiles 1879-2005

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Process Engineering, Biotechnology, Nutrition Technology

: Oxidative stability of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) and volatile and oxidized volatile compounds in 2 types of DHA-enriched fish oil, triacylglycerol (TG) and ethyl ester (EE), were studied during storage at 80 °C with aeration. The rate of DHA autoxidation was higher than that of EPA. DHA in EE form was more susceptible to autoxidation than in TG form. Thirty-one volatile compounds were identified in EE and 23 volatile compounds in TG. (E)-2-pentenal, 2-(1-pentenyl) furan, and (E,E)-2,4-heptadienal were commonly detected as oxidized volatile compounds from TG and EE fish oil. These volatile oxidized compounds might be formed mainly from the oxidation of DHA and EPA, the main fatty acids of the oil.

Electronic Resource

1089-7690

AIP Digital Archive

Physics

Chemistry and Pharmacology

The resonances of a collinear ABA molecule with a double Morse potential well are computed by means of complex scaling. For each symmetry, this system has about 40 resonances in 10 channels. The extraction of the resonance parameters from the raw data has been automatized, allowing the computation of all resonances for more than 40 values of the kinetic coupling parameter δ=mA/(mA+mB). Mean and standard deviation of the width Γ as function of δ show an interesting structure, which corresponds to the behavior of the classical unimolecular decay rates determined from trajectory calculations. Unexpectedly, we noticed that Fermi's golden rule for Γ breaks down already for values of δ near 0.1. © 1996 American Institute of Physics.

Electronic Resource

1750-3841

Blackwell Publishing Journal Backfiles 1879-2005

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Process Engineering, Biotechnology, Nutrition Technology

Electronic Resource

1750-3841

Blackwell Publishing Journal Backfiles 1879-2005

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Process Engineering, Biotechnology, Nutrition Technology

The bactericidal effect of electrolyzed oxidizing (EO) water was evaluated on Escherichia coli O157:H7-inoculated and Salmonella-inoculated shrimp. The shrimp were inoculated on day 0 and stored frozen at -20°C. Bacterial enumeration was done on days 0, 24, 49, and 119 of frozen storage. Acidic EO water at 40 ppm free available chlorine was as effective as aqueous chlorine of the same concentration and was significantly more effective (P 〈 0.05) than tap water in reducing pathogen load on the inoculated shrimp. Further reduction of pathogen numbers was observed after each frozen storage period. Prewashing with alkaline EO water did not enhance the bactericidal activity of the acidic EO water on the shrimp. The washed acidic EO water of the inoculated shrimp had a nondetectable bacterial population compared with treated aqueous chlorine, alkaline EO water, and tap water. Non-inoculated shrimp subjected to similar treatments were served cooked or uncooked to a minimum of 10 experienced panelists for sensory evaluation on days 0, 24, 49, and 119 of frozen storage. The cooked shrimp were evaluated for the presence of off-odor, juiciness, tenderness, shrimpy flavor, aftertaste, and overall acceptability; whereas the raw shrimp were evaluated for color, firmness, presence of off-odors, melanosis, and overall acceptability. Raw shrimp thawed from each frozen storage period were stored at refrigeration temperature (4 °C) for 3 d to observe for melanosis. No difference of sensory attributes was detected among the various treatment groups. Therefore, acidic EO water can be used as an effective disinfectant to replace aqueous chlorine for thawing shrimp blocks.

Electronic Resource

1546-1718

Nature Archives 1869 - 2009

Biology

Medicine

[Auszug] Sir — Idiopathic congenital central hypoventilation syndrome (CCHS, or “Ondine's Curse”) is a rare disorder characterized by abnormal control of respiration in the absence of neuromuscular or lung disease, or an identifiable brain-stem lesion. A deficiency in automatic control of ...

Electronic Resource

1552-6909

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Objective: To test the hypotheses that nursing students (a) have limited knowledge of risk factors for sudden infant death syndrome (SIDS) and the American Academy of Pediatrics (AAP) recommendation of placing infants on their backs or sides for sleep, and (b) after careful education about SIDS, would retain this information and teach it to parents. Design: A pretest questionnaire was used to identify knowledge of 13 risk factors and personal recommendation for sleep position. Participants attended a lecture on SIDS and received written educational material. A posttest was completed after 6 weeks. Setting: Nursing students were assessed during their family practice course. Participants: Fifty-one 4th-year nursing students (mean age 28.4 years, SD= 7.6) enrolled in the BSN program completed the pretest; 29 completed the identical posttest. Intervention: A lecture on SIDS and SIDS risk factors with written educational material after the pretest. Main Outcome Measures: Pretest and posttest responses. Results: The Mann-Whitney test and Mc-Nemar chi-square analyses were used to determine factors on the pretest which influenced the awareness of prone position and to compare pretest and posttest data. On the pretest, 69% of students were aware of the AAP recommendation but significantly more (92%) were aware on the posttest. Posttest responses increased significantly for 12 of the 13 risk factors; 41% of the students identified all 13 risk factors on the posttest, in contrast to 0% on the pretest. On both the pretest and posttest, 93% of students stated that it was important to discuss their infant's sleep position with parents. Posttest results showed that students unanimously recommend the side or back sleep position. Conclusion: Nursing students were aware of the AAP recommendation, yet their knowledge of other risk factors was limited. A careful educational process resulted in retention of information about the AAP recommendation and other risk factors. In addition, students were willing to teach parents to place their infants on the back or side to sleep.

Electronic Resource

0004-3249

Art History