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This study examined the psychometric equivalence of paper-and-pencil and Internet formats of key questionnaires used in couple research. Self-report questionnaires assessing interpersonal constructs (relationship satisfaction, communication/conflict management, partner support, emotional intimacy) and intrapersonal constructs (individual traits, psychological symptoms, contextual influences) were administered to young adults in committed dating relationships. The same measures were administered twice via paper-and-pencil and/or Internet methods over a 2-week period. Method order was counterbalanced among participants, and temporal stability was controlled. Intrapersonal and interpersonal measures generally remained reliable when administered online and demonstrated quantitative and qualitative equivalence across methods. The implications of online administration of questionnaires are discussed, and specific recommendations are made for researchers who wish to transition to online data collection.

A combination of advanced synthetic and single molecule spectroscopic techniques allowed us to demonstrate that macrocycles, covalently bound to a conjugated polymer backbone, raise the effective chain persistence length by at least a factor of 5.

Serious intracranial sequelae of unilateral internal jugular vein ligation or resection are extremely rare. 22 cases including our own, were found in the literature, eight of them with a fatal outcome. Factors involved such as abnormalities of the cerebral venous sinus system, controlled hypotension, hypovolemia, posture, and dressings are discussed, as well as safeguards and possible preoperative diagnostic measures.

Operative procedures were carried out on 410 maxillary sinuses in 397 patients. The most frequent indications for surgery were communication between the mouth and the atrium (55.4%) and cysts (24.2%). A Caldwell-Luc operation was carried out in 76.6% of the cases (radical operation). Vestibulum-cheek flaps were used to close the fistula in 97% of the cases. A follow-up examination of 220 patients showed that 10.2% complained of pain. The indications for surgery were limited to avoid this lasting damage.