It is only to be regretted that this step was not taken earlier, for the large number of idle bulls now in the herd is both a detriment to that body and a positive loss of once good skins. This menace in the growth of the herd has been repeatedly pointed out (Clark, 1914, 1916, 1917; Osgood, Preble, and Parker, 1915) to those having the matter in charge. The last column in table 1 contains the ...

Another recent surprise was the discovery of a phytoplankton bloom under the sea ice of the Arctic during investigations in the north Pacific led by Kevin Arrigo from Stanford University (Science (2012) 336, 1408). This, the authors conclude, could mean that productivity in the icy polar waters may have been underestimated by a factor of up to ten, which underlines that we still know far too li...

to finality, and it is our present intention to refine and extend this work as much as possible on the experimental side. 1 B. Davis, Physic. Rev., 9, 64 (1917). 2 D. L. Webster, Ibid., 9, 220 (1917). 8 B. Davis, Ibid., 11, 433 (1918). 4 D. L. Webster and A. E. Hennings, Ibid., 21, 312 (1923). ' H. A. Kramers, Phil. Mag., 46, 869 (1923). 6 W. W. Nicholas, Physic. Rev., 29, 619 (1927). 7 A. Jons...

Oral administration of the probiotic bacterium Escherichia coli Nissle 1917 improves chronic inflammatory bowel diseases, but the molecular basis for this therapeutic efficacy is unknown. E. coli Nissle 1917 harbors a cluster of genes coding for the biosynthesis of hybrid nonribosomal peptide-polyketide(s). This biosynthetic pathway confers the ability for bacteria to induce DNA double strand b...

Previously we reported that the streptomycin-treated mouse intestine selected for two different Escherichia coli MG1655 mutants with improved colonizing ability: nonmotile E. coli MG1655 flhDC deletion mutants that grew 15% faster in vitro in mouse cecal mucus and motile E. coli MG1655 envZ missense mutants that grew slower in vitro in mouse cecal mucus yet were able to cocolonize with the fast...

Son yıllarda Türkiye’deki Rusya tarihi araştırmalarında 1905 ve 1917 devrimler dönemine ait konulara ilginin arttığı görülmektedir. Buna en yakın örnek olarak Hasip Saygılı’nın kaleminden “1905 Rus Devrimi Sultan Abdülhâmid” adlı çalışma, Ülkü Çalışkan’ın kaleme aldığı “Rusya İmparatorluğu’nda Anayasal Demokrat Partisi’nin Milliyetler Politikası (Kadet Partisi 1905-1917)” çalışma ile Onur İşçi ...

Inflammatory bowel disease is an idiopathic autoimmune disorder that is mainly divided into ulcerative colitis and Crohn's disease. Probiotics are known for their beneficial effect and used as a treatment option in different gastrointestinal problems. The aim of our study was to find suitable bacterial vectors for gene therapy of inflammatory bowel disease. Salmonella enterica serovar Typhimuri...