Abstract We firstly report a 2-μm all-fiber nonlinear pulse compressor based on two pieces of normal dispersion fiber (NDF), which enables high-power scaling ability watt-level and high compression ratio 13.7. With the NDF-based compressor, 450-fs laser pulses with repetition rate 101.4 MHz are compressed to 35.1 fs, corresponding 5.2 optical oscillation cycle at wavelength region. The output a...

98 There are many aspects of the geriatric day hospital which were not measured and sadly may never be measured. It is user friendly to patients, doctors, nurses and therapists. It may not be equipped with a CT/MRI scan on site but there are neither fast lifts nor revolving doors. To me, it makes the working life of a geriatrician exciting and brings in unique variation from the problems that w...

A ternary Permutation-CSP is specified by a subset Π of the symmetric group S3. An instance of such a problem consists of a set of variables V and a multiset of constraints, which are ordered triples of distinct variables of V. The objective is to find a linear ordering α of V that maximizes the number of triples whose rearrangement (under α) follows a permutation in Π. We prove that every tern...

In ant-plant symbioses, plants provide symbiotic ants with food and specialized nesting cavities (called domatia). In many ant-plant symbioses, a fungal patch grows within each domatium. The symbiotic nature of the fungal association has been shown in the ant-plant Leonardoxa africana and its protective mutualist ant Petalomyrmex phylax. To decipher trophic fluxes among the three partners, food...