A dilemma for reasons additivity

Additivity and non-additivity for perverse signatures

A well-known property of the signature of closed oriented 4n-dimensional manifolds is Novikov additivity, which states that if a manifold is split into two manifolds with boundary along an oriented smooth hypersurface, then the signature of the original manifold equals the sum of the signatures of the resulting manifolds with boundary. Wall showed that this property is not true of signatures on...

I-3: Reactive Oxygen Species: A Dilemma for

Spermatozoa are very special cells and constantly exposed to the interphase between oxidative stress through high amounts of reactive oxygen species (ROS) and leukocytes, and reduction by means of scavengers and antioxidants. Considering the very special functions of spermatozoa as being the only cells with such high polarization and exerting their functions outside the body, even in a differen...

“It’s Practically a Must”: Neoliberal Reasons for Foreign Language Learning

This qualitative study analyzes the reasons of college students for learning English as a foreign language (EFL) in Costa Rica and the reasons of high school students for learning German as a foreign language (GFL) in the US. It asks to what extent the learners’ reasons align with or deviate from neoliberal discourses that commodify foreign languages. The analysis of 27 interviews in a US high ...

Tumefactive Fibroinflammatory Lesion: A Diagnostic Dilemma

Tumefactive fibroinflammatory lesions (TFLs) are rare idiopathic benign fibrosclerosing lesions that clinically simulate a malignancy. TFLs are seen more frequently in males between 10 and 74 years of age. The usual site of involvement is the head and neck region, but rarely the extremities may be involved. Coexisting fibrosclerotic processes have been reported including retroperitoneal fibrosi...

Median Nerve Lipofibrohamartoma: A Treatment Dilemma