An algorithm to find the roots and poles of a complex function depending on two arguments (one one real) is proposed. Such problems are common in many fields science for instance electromagnetism, acoustics, stability analyses, spectroscopy, optics, elementary particle physics. The proposed technique belongs class global algorithms, gives full picture solutions fixed region Ω ⊂ C × R can be ver...

My immediate thought was that it was "morning sickness," a symptom of pregnancy. This seems impossible because I haven't been missing my period. If I did conceive, it could have happened only during last week. Wouldn't it be too early to tell? Also, are there pregnancy tests available at the Health Services in John Jay? If so, for what charge? Is it confidential? Do you recommend the store-boug...

AIMS To compare the health status of UK professional divers and age-matched non-divers and to contrast offshore divers (OSDs) with non-offshore divers (NOSDs). METHODS A postal survey sent to 2958 male professional divers, registered with the UK Health & Safety Executive (HSE) before 1991, and 2708 men who had worked in the offshore oil industry in 1990-92 (non-divers). The questionnaire addr...

The title compound, C(11)H(13)NO(4), contains a nitrone group, C=N-O-R, the geometry of which shows a Z configuration with near planarity (r.m.s. deviation = 0.0787 Å) around the C=N double bond. An intra-molecular C-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal packing, mol-ecules are linked into R(2) (2)(12) dimers and R(2) (2)(14) rings via C-H⋯O inter-molecular hydrogen bonds.

My immediate thought was that it was "morning sickness," a symptom of pregnancy. This seems impossible because I haven't been missing my period. If I did conceive, it could have happened only during last week. Wouldn't it be too early to tell? Also, are there pregnancy tests available at the Health Services in John Jay? If so, for what charge? Is it confidential? Do you recommend the store-boug...