A novel tetrafunctional mesogenic epoxy monomer with a cyclic-siloxane chain as a central part was successfully synthesized and characterized by proton nuclear magnetic resonance, Fourier transform infrared spectroscopy, differential scanning calorimetry, and polarized optical microscopy. The transition temperature and liquid crystallinity of cyclic-siloxane type mesogenic epoxy were compared with those of linear-siloxane type mesogenic epoxy. Moreover, epoxy thermosets were prepared based on the cyclic- and linear-siloxane type mesogenic epoxy monomers and 4,4′-diaminodiphenylethane. The effects of epoxy backbone moiety on thermal and mechanical properties were investigated in detail. As a result, the cyclic-siloxane type mesogenic epoxy thermoset shows glass transition temperature-less behavior and low coefficient of linear thermal expansion without a decrease in toughness.

Wir mOchten in folgendem fiber einen Fall berichten, der wegen der Eigenart des klinischen Krankheitsbildes und der anatomisehen Ver~nderungen ein nieht geringes, und zwar nieht blof~ pathologiseh-ana~omiSehes Interesse bietet und welchen uns I-Ierr Geheimrat E. K a u f m a n n zur genaneren Untersuchung freundlichst uberwies. Da dieser Fall unseres Eraehtens einer ganz seharf umsehriebenen Gruppe yon I5~ankheitsfiillen zuzurechnen ist, die nur wenig bekannt, abet dutch eine Pubtikation aus allerjtingster Zeit hither charakterisiert ist, rechtfertigt sich eine VerSffentlichung wohl um go mehr, als g e n a u e r e h i s t o -1 o g i s c h e Untersuchungen, speziell der in Frage kommenden L e b e rv e r it n d e r u n g e n bis jetzt noch nicht publiziert worden sind.Die folgenden anamnestischen und klinisehen Angaben fiber den Fall, die das Institut der Mitteilung yon Herrn Dr. S c h ii t t e in Osnabriick verdankt, sollen nur auszugsweise wiedergegeben werden; eine ausfiihrliche Pttblikation des Falles, die im wesentlichen die k 1 i n i s c h e Seite und den Hirnbefund beriicksichtigen sell, wird durch Herrn Dr. S c h ti t t e erfolgen.

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Background: Recent studies on fertility awareness in the reproductive population have reported the lack of accurate knowledge about fertility and assisted reproductive technologies. However, these researches were conducted among university students or fertility patients. Therefore, there was little information among women trying to get pregnant at home on the following aspects: (i) the presence of adequate fertility knowledge, (ii) the prevalence of subclinical infertility, and (iii) reasons for not visiting the clinic to identify the possibility of infertility. The aim of this study was to explore fertility awareness and subclinical infertility among women trying to get pregnant at home.Methods: A total of 2,084 Japanese women responded to this online survey. We selected 1,541 women according to the study criteria. By the results of 61 questions, we evaluated knowledge about fertility, prevalence of subclinical infertility, and reasons for visiting the clinic.Results: Despite the desire of the participants to get pregnant, they had an apparent tendency to overestimate the age limit of childbearing. A total of 338 (21.9%) women thought that those aged over 45 years could have children. Approximately 40% of the women had a possibility of subclinical infertility, despite being unaware of the fact. In addition, about 70% of the women considered themselves to suffer from infertility problems. Women who were informed about the possibility of infertility hesitated to visit the clinic for the following reasons: unfamiliarity with a gynecologist or clinic and apprehensions about the gynecologic examination.Conclusions: Several women require treatment for infertility. Nonetheless, they hesitate to visit the clinic. Sexual health education, together with proper accessibility to gynecology clinics are necessary to avoid involuntary childlessness.

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