Electronic structures of B-2p and C-2p of boron-doped diamond film by soft X-ray absorption and emission spectroscopy

X-ray absorption (XAS) and emission (XES) spectroscopy near B-K and C-K edges have been performed on metallic (~1at%B, B-diamond) and semiconducting (~0.1at%B and N, BN-diamond) doped-diamond films. Both B-K XAS and XES spectra shows metallic partial density of state (PDOS) with the Fermi energy of 185.3 eV, and there is no apparent boron-concentration dependence in contrast to the different electric property. In C-K XAS spectrum of B-diamond, the impurity state ascribed to boron is clearly observed near the Fermi level. The Fermi energy is found to be almost same with the top of the valence band of non-doped diamond, E_V, 283.9 eV. C-K XAS of BN-diamond shows both the B-induced shallow level and N-induced deep-and-broad levels as the in-gap states, in which the shallow level is in good agreement with the activation energy (E_a=0.37 eV) estimated from the temperature dependence of the conductivity, namely the change in C-2p PDOS of impurity-induced metallization is directly observed. The electric property of this diamond is mainly ascribed to the electronic structure of C-2p near the Fermi level. The observed XES spectra are compared with the DVX-alpha cluster calculation. The DVX-alpha result supports the strong hybridization between B-2p and C-2p observed in XAS and XES spectra, and suggests that the small amount of borons (<1at%) in diamond occupy the substitutional site rather than interstitial site.Comment: submitted to Phys. Rev. B, 5 pages and 5 figure

Unexpected placenta accreta spectrum after the use of assisted reproductive technology in women with adenomyomectomy

Placenta accreta spectrum (PAS) is a rare complication that can lead to life-threatening postpartum hemorrhage. PAS can sometimes occur unexpectedly, without placenta previa;such cases can lead to higher maternal mortality and morbidity than expected cases. Here, the authors report a case of unexpected PAS caused by assisted reproductive technology (ART) in a woman with adenomyosis. The patient was a 37-year-old Japanese primipara woman who presented to our hospital at 11 weeks gestation, later returning to her parents' house to give birth. The woman had adenomyosis and underwent adenomyomectomy, which was followed by an ART pregnancy. The patient was admitted to our hospital because of a life-threatening preterm birth, with a short cervix and no evidence of placenta previa. Despite strict perinatal management, preterm rupture of the membrane (PROM) occurred. During laparotomy, the small intestine, rectum, and both right and left ovaries were clumped together and severely adhered to the surface of the uterus. After delivery, manual partial removal of the placenta was performed, resulting in heavy bleeding from the implantation site, which was diagnosed as an unexpected PAS. Following several uterine compression efforts, we successfully preserved the uterus

New challenges for text mining: mapping between text and manually curated pathways

<p>Abstract</p> <p>Background</p> <p>Associating literature with pathways poses new challenges to the Text Mining (TM) community. There are three main challenges to this task: (1) the identification of the mapping position of a specific entity or reaction in a given pathway, (2) the recognition of the causal relationships among multiple reactions, and (3) the formulation and implementation of required inferences based on biological domain knowledge.</p> <p>Results</p> <p>To address these challenges, we constructed new resources to link the text with a model pathway; they are: the GENIA pathway corpus with event annotation and NF-kB pathway. Through their detailed analysis, we address the untapped resource, ‘bio-inference,’ as well as the differences between text and pathway representation. Here, we show the precise comparisons of their representations and the nine classes of ‘bio-inference’ schemes observed in the pathway corpus.</p> <p>Conclusions</p> <p>We believe that the creation of such rich resources and their detailed analysis is the significant first step for accelerating the research of the automatic construction of pathway from text.</p

Efficiency enhancement of InGaN amber MQWs using nanopillar structures

Abstract We have investigated the use of nanopillar structures on high indium content InGaN amber multiple quantum well (MQW) samples to enhance the emission efficiency. A significant emission enhancement was observed which can be attributed to the enhancement of internal quantum efficiency and light extraction efficiency. The size-dependent strain relaxation effect was characterized by photoluminescence, Raman spectroscopy and time-resolved photoluminescence measurements. In addition, the light extraction efficiency of different MQW samples was studied by finite-different time-domain simulations. Compared to the as-grown sample, the nanopillar amber MQW sample with a diameter of 300 nm has demonstrated an emission enhancement by a factor of 23.8.</jats:p

First trimester heterotopic pregnancy with shock treated laparoscopically, followed by uneventful term pregnancy and normal birth

Heterotopic pregnancy (HP), a coexistence of intrauterine and ectopic pregnancies, is extremely rare. Although there have been many reports of maternal outcomes in pregnant women with HP, they have not described fetal neurodevelopmental outcomes and survival. A 30-year-old Japanese woman in early gestation who had undergone two previous cesarean deliveries was transferred to our hospital with vital signs of shock. HP was confirmed by ultrasonography and laparoscopic surgery, and right salpingectomy was performed. At term, a 2,875 g neonate was delivered via cesarean section without any complications

Tubo-ovarian abscess in a patient with cri du chat syndrome: A case report

A tubo-ovarian abscess is an infection that occurs as a sequela of pelvic inflammatory disease. There is no reported association between a tubo-ovarian abscess and cri du chat syndrome in the medical literature. Herein, we report the case of a 44-year-old woman with cri du chat syndrome who was subsequently diagnosed with a tubo-ovarian abscess. After emergent laparotomy, simple total hysterectomy, and bilateral adnexectomy, the patient was discharged 13 days postoperatively without complications

A case of spontaneous parasitic myoma in a patient without a history of myomectomy treated laparoscopically

Parasitic myoma (PM) is a rare disease in which multiple leiomyomas are intraperitoneally formed. Recently, an increasing number of cases due to specimen morcellation during minimally invasive surgery has been reported. We present the first case of a PM identified intraoperatively during laparoscopic hysterectomy. A 40-year-old Japanese multiparous woman presented to our hospital with heavy menstrual bleeding. She had no history of previous surgery. Magnetic resonance imaging showed uterine myomas. As the patient did not wish for further pregnancy, she underwent oral gonadotropin-releasing hormone antagonist therapy followed by a total laparoscopic hysterectomy. Intraoperatively, we identified a thumb-sized tumor on the left side of the peritoneum. Histopathological examination showed evidence of benign leiomyoma