Cross-comparison of last glacial radiocarbon and OSL ages using periglacial fan deposits

Two cores from a Weichselian periglacial alluvial fan were dated using 14C and OSL, to verify the reliability of both methods and check the upper dating limit of the 14C method. Both dating methods yielded a similar chronology for core Eerbeek-I, with infinite 14C dates for the lower part where OSL dates indicated ages of over 45 ka. Finite 14C dates were obtained throughout the core for Eerbeek-II, despite stratigraphic and OSL evidence suggesting ages beyond 14C limits. Apparently, additional chemical pre-treatment to remove younger carbon fractions did not work adequately for samples from this core. We hypothesize that this may be related to a larger influence of younger-age humin fractions in the mainly sandy Eerbeek-II deposits compared to those buffered by a thick peat layer of Eerbeek-I. We suggest that (local) stratigraphy, percolation and humification processes may impact 14C ages of organic deposits more than commonly assumed, and should receive more attention. In addition, we introduce a new method to assess robustness and validity of OSL dates and demonstrate the applicability of OSL dating methods in this setting. Our results highlight that the 14C method requires additional verification methods, such as OSL, for deposits older than 30 ka

Sightwalk : a mobile route planner app for people with visual impairment

There are an estimated 350.000 people in the Netherlands who are visually impaired. The largest group of these, about 75%, has low vision and the other 25% are blind. For both groups, their visual impairment has a profound impact on performing everyday activities and has therefore significant implications on actively participating in society. Even though social participation is important for both physical, mental, as well as social health, only 35% of people with a visually impairment are employed compared to 67% of the general Dutch working population. The use of mobility aids is therefore crucial for this group to be able to participate, within their ability, in society. We demonstrate a prototype of a mobile route planner application for people with a visually impairment. This is the abstract of one of the oral presentations of the International Conference Supporting Health by Technology 2022. Project: The sightguid

High throughput screening method for asessing heterogeneity of microorganisms

Samenvatting niet beschikbaar voor EP187753

HIGH THROUGHPUT SCREENING METHOD FOR ASSESSING HETEROGENEITY OF MICROORGANISMS

The invention relates to the field of microbiology. Provided is a method which is particularly powerful for High Throughput Screening (HTS) purposes. More specific a high throughput method for determining heterogeneity or interactions of microorganisms is provided

SAMPLING DEVICE FOR IN VIVO SAMPLING OF LIQUIDS FROM THE GASTROINTESTINAL TRACT, PROCESS FOR THE PRODUCTION THEREOF AND MOULD OR MASK FOR USE IN THE PRODUCTION PROCESS

The present invention relates to a sampling device suitable for in vivo sampling of liquid(s) from the gastro-intestinal tract, comprising a body, the body comprising a channel and an opening for entrance of the liquid(s) at one end of the channel, and a cover bonded to at least part of the body and arranged such that the channel in the body is at least partially covered by the cover, the channel having a length of 2 mm - 25 m and a perimeter of 2.4-8600 [mu]m, the channel further comprising one or more side compartments, and the channel with the optional one or more side compartments having a volume of 5 nl - 4500 [mu]l

METHOD FOR TAKING A PLURALITY OF SAMPLES

The invention provides a method for taking a plurality of samples (200) from a substrate (40) with sample material (20) by using an optical microscope (1000) and a stamp (50). At least part of the stamp (50) is transparent and the stamp (50) is arranged in front of the objective (41). The elevations (58) of the stamp (50) are contacted with sample material (20) in a substrate (40).The samples (200) may be replicated to other substrates

BIOCHIP AND PROCESS FOR THE PRODUCTION OF A BIOCHIP

The invention relates to a biochip comprising a porous support, wherein the porous support comprises at least one surface coated with a coating, preferably a polymer coating, wherein the coating is patterned with a micro compartments pattern, with the support providing a bottom surface to the compartments and the coating providing edges to the compartments, and wherein the pattern comprises at least 400 compartments per mm. The biochip can be obtained by a process comprising providing a porous support; coating at least one surface of the support with a coating; arranging between the coated surface and an ion etching device a shadow mask with a predetermined hole pattern; and ion etching at least part of the coating such that a patterned coating with micro compartments is obtained