Given the problem of low tensile performance plastic film used in China, which brings about difficulties curl-up collecting, this study, a contrast test was carried out on property high-performance for full recycling and ordinary polyethylene (PE film) that is extensively China. Test results showed that, within service period, elongation at break yield stress were higher than those film, and, f...

Materials that are capable of actuation in response to a variety external stimuli significant interest for applications sensors, soft robotics, and biomedical devices. Here, we present class actuators using composites based on polymer intrinsic microporosity (PIM). By adding an activated carbon (AX21) filler PIM, the composite exhibits repeatable upon solvent evaporation wetting it is possible ...

Nature is replete with predator venoms that immobilize prey by targeting ion channels. Electric eels (Electrophorus electricus) take a different tactic to accomplish the same end. Striking eels emit electricity in volleys of 1 ms, high-voltage pulses. Each pulse is capable of activating prey motor neuron efferents, and hence muscles. In a typical attack, eel discharges cause brief, immobilizing...

It was thus that Mrs. G. saw Albert when she stepped into our living room for the first time, early one June afternoon. Two steps led down from the wide doorway, through from the hall into the long room. Mrs. G. stood?I should say loomed? the open doorway at the top of the two steps. She was big,?a Woman of tremendous physique, a Viking woman. Indeed, at times, she called herself a Scandinavian...

Few mutations link well defined behaviors with individual neurons and the activity of specific genes. In Drosophila, recent evidence indicates the presence of a doublesex-independent pathway controlling sexual behavior and neuronal differentiation. We have identified a gene, dissatisfaction (dsf), that affects sex-specific courtship behaviors and neural differentiation in both sexes without an ...

Multiple factors, including the MADS-domain proteins AGAMOUS-LIKE15 (AGL15) and AGL18, contribute to the regulation of the transition from vegetative to reproductive growth. AGL15 and AGL18 were previously shown to act redundantly as floral repressors and upstream of FLOWERING LOCUS T (FT) in Arabidopsis (Arabidopsis thaliana). A series of genetic and molecular experiments, primarily focused on...

In Chinese cabbage, heading type is a key agricultural trait of significant economic importance. Using a natural microspore-derived doubled haploid plant, we generated self-crossed progeny with overlapping or outward curling head morphotypes. Sequencing-based bulked segregant analysis (Seq-BSA) revealed a candidate region of 0.52 Mb (A06: 1,824,886~2,347,097 bp) containing genes enriched for pl...

Honeybees (Apis mellifera) curl their abdomens for daily rhythmic activities. Prior to determining this fact, people have concluded that honeybees could curl their abdomen casually. However, an intriguing but less studied feature is the possible unidirectional abdominal deformation in free-flying honeybees. A high-speed video camera was used to capture the curling and to analyze the changes in ...