Consumers dislike the "cold" light they give off and their poor lifespan.
Despite the average poor lifespan of prosthetic materials and the accurate professional and home care required by intraoral implants, prosthetic rehabilitation could be considered an effective and suitable method for rehabilitation of extensively resected head and neck cancer patients (Figs. 6 and 7).
Journalists also commonly cited Soul Reaver 2s poor lifespan and replayability as an issue; the reviewer for Official U.S. PlayStation Magazine opined that "the problem is that there just isn't much gameplay there" and Fielder warned that play "burns bright, but not as long as you'd like".
Wear and tear is a major issue in the realm of electric scooters, resulting in a short lifespan of individual scooters and poor unit economics.
This also leads to poor esthetics, low stain resistance, and a short lifespan [5, 6].
Poor design choices, mainly due to overlooking the user energy needs and local conditions, contribute to the short lifespan of many installed biogas systems.
These batteries, however, have a short lifespan.
Such apparent contradictions, as well as the poor correlation between lifespan and triacylglyceride storage among long-lived daf-2 alleles [ 9], suggest that lipid levels per se play no consistent, causal role in longevity.
Primary reasons include high costs of equipment and mercury vapour lamps, short lamp lifespan (200 300 hours), the need for a stable power supply (as repeated on-off switching reduces lifespan of lamp), lack of local capacity for maintenance, need for a darkroom, and poor acceptance by laboratory staff.
The theory of karma is able to explain day-to-day observable phenomena such as inequality between the rich and the poor, luck, differences in lifespan, and the ability to enjoy life despite being immoral.
As major drawbacks, conventional models, employing collagen hydrogels as dermal equivalents (DEs) exhibit a rather poor stability and limited lifespan.
