トルコ・コンヤ盆地からの６０．８５ｍ柱状堆積物の層相

In 1991, a 60.85 m continuous core was collected from the Konya basin (37°45′13.3″N and 32°43′5.4″E) which is located in the western part of the Anatolian Plateau Turkey, where there ware a number of important ancient civilizations. The core sediment consists of a continuous lacustrine accumulation of homogeneous silty clay and clay with shell bands, sand streams and organic-rich accumulated layers. It also contains visible gypsum crystals suggesting the existence of dry climatic condition in the past. Three ash layers were also recognized at 7.72-7.77 m, 12.15-12.20 m and 51.5 m in depth. The preliminary radiocarbon datings of the shells collected from 6 m depth are older than 40 environmental record such as interglacial-glacial cycles occurring about every 100,000 years during the past million years. This report is a sedimentological description of the core samples form the Konya Basin

Cell cycle regulation by long non-coding RNAs

The mammalian cell cycle is precisely controlled by cyclin-dependent kinases (CDKs) and related pathways such as the RB and p53 pathways. Recent research on long non-coding RNAs (lncRNAs) indicates that many lncRNAs are involved in the regulation of critical cell cycle regulators such as the cyclins, CDKs, CDK inhibitors, pRB, and p53. These lncRNAs act as epigenetic regulators, transcription factor regulators, post-transcription regulators, and protein scaffolds. These cell cycle-regulated lncRNAs mainly control cellular levels of cell cycle regulators via various mechanisms, and may provide diversity and reliability to the general cell cycle. Interestingly, several lncRNAs are induced by DNA damage and participate in cell cycle arrest or induction of apoptosis as DNA damage responses. Therefore, deregulations of these cell cycle regulatory lncRNAs may be involved in tumorigenesis, and they are novel candidate molecular targets for cancer therapy and diagnosis

トルコ、アナトリア高原、トゥズ湖とコンヤ盆地における過去２４，０００年間の湖水位変動と扇状地の形成

Alluvial fans developed and lake levels fluctuated several times according to the climatic changes during the last 24,000 years. Alluvial fans developed in Lake Tuz in the cold, pluvial periods of increasing discharge during the Holocene around 5000 yr BP. and after 3500 yr BP. Lake expansion occurred at 23 ka., 18-20 ka., 14-15 ka., and 11ka. over the last 24,000 years in the Konya Basin. These expansions, shown by the raised lake terraces and beach ridges, were mainly due to cold and pluvial climatic changes. The lake level rose in the colder climate during marine oxygen isotope stage 2 and the Younger Dryas period. The lake level reached its highest level of 1013 to 1014 m during the last Glacial maximum before 18 ka

国際日本文化研究センターにおける炭素14年代測定

At the International Research Center for Japanese Studies, a conventional radiocarbon laboratory using a liquid scintillation spectrometer, LKB-Wallac 1220 Quantulus has been operating in full since 1993. By the summer of 1997, we had performed more than 300 measurements of samples concerned with paleoenvironmental reconstructions and archeological researches. Our laboratory code is JAS (International Research Center for Japanese Studies). This is a short summary concerning experimental procedures for radiocarbon dating and our major research projects