I n t r o d u c t i o n . In this paper, we s tudy the following quest ion: How long a cycle must there be in a 3-connected 3-regular graph on n vertices? For planar graphs this question goes back to T a i t [6], who conjectured tha t any planar 3-connected 3-regular graph is hamiltonian. T u t t e [7] disproved this conjecture by finding a counterexample on 46 vertices. Using Tu t t e ' s exam...

The impor tance of several pyr imidines in nucleic acid metabo l i sm has made the invest igat ion of their chemical analogs of interest to cancer chemotherapy. Recent ly , Heidelberger and coworkers (3) synthesized a group of f luorinated pyr imidines and pyr imid ine precursors which have been shown to have an t i tumor ac t iv i ty in several an imal tumor systems. M c I v e r (6) et al. stu...

serum uric acid , trigly c eride and c holestero l l e vel s were measured in 851 healthy adults in tehe ran , i r a n . careful l aboratory and clinical e v a l ua t ion wa s undertaken to exclude any medical problems. onl y 65% were on iddeal weigh t .the mean uric a c i d v a l ues were 6.1 f or male s and 5 . 1 f or f emale s under 30 years of age. uric acid l ev e ls above 6mg in females a...

This paper explores the possibility of learning chess game concepts under weak supervision with convolutional neural networks, which is a topic that has not been visited to the best of our knowledge. We put this task in three different backgrounds: (1) deep reinforcement learning has shown an amazing capability to learn a mapping from visual inputs to most rewarding actions, without knowing the...

a case o f intrahepatic stone and its t r eat ment i s present e d . the t ype s o f i ntrahepatic s tones , t h e etiological f act o r , t he ways of di agno s is and t reatment a re b eing discussed. the disease is common in far eastern c ountri es a nd asian are a, with c lonorchi s s i nens is inf estation, but s peci ally in iran when the s tones i s a lone in intrahepatic ducts without e...

* Department of Genetics and Molecular Biology, Faculty of Science, Masaryk University, 61 137 Brno, Czech Republic A genome map of Staphylococcus carnosus TM300, an important microorganism in the food industry and long used as a starter culture, was constructed by pulsed-f ield gel electrophoresis of DNA fragments obtained after digestion with Notl, Sfil and Apal. The size of the chromosome wa...

breast masses in adoles c ent are common. in ma l e s , almost all are g ynecomast i a . surgical intervention may be required for cosmetic and psycologic reasons. there app e a r s to be little risk of malignancy in these patients. in females, fibroadenoma are the most common breast masse s . there are benign neoplasms that should be remove d if presistent. fibroadenomas increase in frequen cy...