Lasing in hybrid metal-Bragg nanocavities

We report room-temperature lasing from an optically pumped subwavelength-scale cylindrical InGaAsP pillar surrounded by circular Bragg reflectors on a metal substrate with a dielectric spacer layer. By taking advantage of wide in-plane photonic bandgaps and proper vertical antiresonances, three dielectric Bragg pairs produce a sufficient optical feedback capable of low threshold lasing from the fundamental TE011 mode. A large spontaneous emission coupling into the lasing mode is obtained from the cavity-enhanced Purcell effects and effective suppression of nonlasing modes

Wavelength division demultiplexer and integrated III-V semiconductor Lasers on a silicon photonics platform with microbubble manipulation

We present details of a 1×4 angled multimode interferometer (de)multiplexer, integrated with a microdisk laser as a demonstration of the way in which the compound semiconductor lasers can be coupled to silicon devices for a multitude of applications

The microbial pH-stable exogenous multienzyme improved growth performance and intestinal morphology of weaned pigs fed a corn–soybean-based diet

The present study investigated the effects of dietary supplementation of multienzyme preparation on growth performance, apparent total tract digestibility (ATTD) of nutrients, and gut health of weaned pigs. A total of 240 weaned pigs (initial body weight: 7.3 ± 0.7 kg) were randomly allotted to five treatments on the basis of body weight. The dietary treatments included a corn–soybean meal (SBM)-based diet supplemented with 0 (control), 0.025, 0.050%, 0.075%, or 0.10% multienzyme preparation. The experimental diets were fed in a meal form for two phases (d 0–14, phase I and d 15–28, phase II). Increasing multienzyme supplementation linearly improved overall (d 0–28) average daily gain, gain:feed, and ATTD of dry matter, gross energy, and crude protein. At d 21, pigs fed dietary increasing levels of multienzyme preparation had linearly greater Lactobacillus spp. (ileum and caecum and faeces) and fewer Clostridium spp. (ileum and caecum) and Escherichia coli (ileum and faeces) populations. On d 28, villus height of the jejunum and ileum were linearly increased with dietary increase in multienzyme preparation. In conclusion, this multienzyme has potential to improve the growth performance, ATTD of nutrients, and gut health of weaned pigs fed a corn–SBM-based diet in the absence of antibiotics growth promoters

Values in Crisis International (SUF edition)

Full edition for scientific use. The COVID-19 crisis is manifold and poses major health, economic and social challenges for current societies. Long-term monitoring of central values and attitudes of citizens in times of crises help to grasp current social and political tensions. Taking this ambition to the global scale and providing comparable data across nations is the main aim of the Values in Crisis Study (VIC). Christian Welzel, together with well-known researchers in Germany, UK and Sweden initiated the study and finally 18 countries collaborated in this project. Currently, the Values in Crisis (VIC) Survey is by our knowledge the only international longitudinal survey project on attitudes and values providing data on a global scale. The international dataset is available as a compact version including mainly the harmonized variables of education, income, and region, the key variables of the survey and scales referring to classical value concepts or personality factors. Additionally, there is a full version, where country-specific questions deviating from the standard questionnaire are available for further single country analysis. A method report is additionally published to provide more insights about the country-specific details of the surveys. This dataset represents the data of 18 countries of the first wave of this longitudinal study which is now made publicly available by the SSÖ-Team and AUSSDA. Further releases of the second wave of the survey “end at sight” which is conducted in 2021 and the third wave of the survey (“after the crisis”, probably in 2022) are planned in the future