Single artificial-atom lasing

Solid-state superconducting circuits are versatile systems in which quantum states can be engineered and controlled. Recent progress in this area has opened up exciting possibilities for exploring fundamental physics as well as applications in quantum information technology; in a series of experiments it was shown that such circuits can be exploited to generate quantum optical phenomena, by designing superconducting elements as artificial atoms that are coupled coherently to the photon field of a resonator. Here we demonstrate a lasing effect with a single artificial atom--a Josephson-junction charge qubit--embedded in a superconducting resonator. We make use of one of the properties of solid-state artificial atoms, namely that they are strongly and controllably coupled to the resonator modes. The device is essentially different from existing lasers and masers; one and the same artificial atom excited by current injection produces many photons.     

从高效蓝光二极管到激光照明

 我来自日本,出生于伊方町,毕业于德岛大学,这是当地一家非常小的大学,并不像北京大学、清华大学这么有名。大学毕业之后,我加入一家只有100名员工的公司。我负责蓝色发光二极管（LED）研发方面的工作,这项工作非常有意思。在研发过程中,我们没有和其他公司、机构或大学合作,完全是独立进行研发。也就是说,所有的发明都是我们自己做的。我发明蓝光LED后去了美国,公司过去没有与其他的学术机构有过任何的合作。整个亚洲国家都有同样的问题,虽然有很多的大学毕业生,但当学生毕业后加入企业做研发时并不是很顺利。     

哀牢山4个海拔梯度树干节肢动物群落比较

作者在2013年4月(干季),运用树干喷雾法调查了哀牢山中山湿性常绿阔叶林2 000,2 200,2 400,2 600 m海拔的树干节肢动物群落.结果显示,所调查树干节肢动物群落隶属于7纲30个类群(目),主要由弹尾目、蜱螨目、蜘蛛目、双翅目、膜翅目、鞘翅目、啮虫目、半翅目同翅亚目、缨翅目等组成.不同海拔间树干节肢动物群落组成显著不同(基于Bray-Curtis相似性),其个体数量(密度)总体呈现出沿海拔升高而上升的趋势,但不同类群的个体密度随海拔梯度表现出不同的分布差异.树种和树皮粗糙度对树干节肢动物群落总体的影响不显著,但对少数节肢动物类群的密度呈现显著影响.表明海拔差异(温度和湿度)对树干节肢动物的影响显著高于微环境差异(树种和树皮粗糙度).     

Special Issue for some new progress made by AMSS and Kyoto University on mathematical methods for informatics,engineering and management

<正> This special issue presents some new progress in mathematical methods for informatics, engineeringand management that is expected to trigger thought and deepen further research. Forthis purpose, 14 papers were selected mainly from the invited talks at the CAS-Kyoto UniversityJoint Workshop on Mathematical Methods for Informatics, Engineering and Management,     

Benign familial neonatal convulsions linked to genetic markers on chromosome 20

Recurrent seizures, commonly known as epilepsies, occur in 1.7% of the general population by age 40. The factors that initiate or underlie seizures are not well understood, but trauma, infectious disease and genetics have been implicated. An understanding of the molecular basis of seizures would shed light on the basic mechanisms of neuronal homeostasis and allow new therapeutic strategies to be explored. Here, we report the mapping of an epilepsy gene to a specific chromosomal region, on the basis of cosegregation of two closely-linked DNA markers with a form of epilepsy known as benign familial neonatal convulsions (BFNC2, 12120 in ref. 3). The linked markers confirm the genetic basis and autosomal dominant inheritance of this trait, and localize the gene causing BFNC in this family to the long arm of chromosome 20. This regional placement is the first step towards the isolation of a gene involved in neuronal activity in the human brain.     

HLA BW54 and B5 in Japanese diabetics with juvenile-onset and insulin-dependency (with special reference to the family history)

Summary The frequency of HLA BW54 and B5 in Japanese patients with JOD is increased and decreased, respectively. In JOD patients without a family history of MOD, the frequency of BW54 is significantly increased, whereas in JOD patients with a positive family history the frequency was not increased in a statistically significant manner.     

Inhibition of the masseteric reflex by vagal afferents

Zusammenfassung Es wurde an der kurarisierten Katze bei «encéphyle isolé» der Einfluss sensibler Vagusfasern auf den monosynaptischen Reflex des Musculus massetericus untersucht (für alle Fasergruppen des Vagus überschwellige Reize). Vollständige Hemmung des Masseter-Reflexes wurde erzielt bei Reizung des proximalen Endes des Halsvagus mit Einzelstromstössen oder kurzen Serien.

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This research was supported by a grant from the U.S.P.H.S. (No. MH-10083). This work has received bibliographic aid from the UCLA Brain Information Service which is a part of the National Information Network of the NINDB and supported under Contract No. PH-43-66-59.     

High secretory activity in the pancreatic B cells of a diabetic strain of the Japanese mouse

Zusammenfassung Elektronenmikroskopische Untersuchung von B-Zellen der Pankreas eines diabetischen Stammes japanischer Mäuse erbrachte den Hinweis gesteigerter Insulin-Synthese, bzw. gesteigerten Insulin-Ausflusses.     

Encephalomyocarditis (EMC) virus-induced diabetes mellitus prevented byCorynebacterium parvum in mice

Summary Corynebacterium parvum prevented the development of encephalomyocarditis virus-induced diabetes in mice, when it was given 3–14 days before the virus infection. This treatment inhibited virus replication in the pancreas of the infected mice at an early stage of the infection.