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Hyung Sun Kim, Joon Seong Park, Jin Hong Lim, Ja Hoon Back, Dong Sup Yoon
INTRODUCTION: Malignant bowel obstruction (MBO) is harrowing complication of gastrointestinal cancers. Only a few studies have reported on the surgical roles of bowel obstruction from recurrent pancreatic cancer. We report successfully management for malignant bowel obstruction by palliative surgery for relief of symptoms. PRESENTATION OF CASE: A 43 year old man was diagnosed with pancreatic tail cancer. After distal pancreatectomy, he underwent six cycle of adjuvant chemotherapy...
January 12, 2017: International Journal of Surgery Case Reports
ZhenHua Li, Jianhua Wei, Xiao Zheng, YiJing Yan, Hong-Gang Luo
In the Kondo systems like the magnetic impurity screened by theconduction electrons in a metal host as well as the quantum dots connected by the leads, the low energy behaviors have universal dependence on the T/T<sup>0</sup><sub>K</sub> or eV/k<sub>B</sub>T<sub>K</sub><sup>0</sup>, where T<sub>K</sub><sup>0</sup> is the conventional Kondo temperature. However, it was shown that this scaling behavior is only valid at low-energy, called the Kondo scaling limit...
February 20, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Ka Yeong Yun, Si Eun Han, Seung Chul Kim, Jong Kil Joo, Kyu Sup Lee
Pregnancy-related osteoporosis is a very rare condition characterized by the occurrence of fracture during pregnancy or the puerperium. Despite its relative rarity, it can be a dangerous condition that causes severe back pain, height loss and disability. Normal physiologic changes during pregnancy, genetic or racial difference, obstetrical history and obstetrical disease, such as preterm labor or pregnancy-induced hypertension, are presumed risk factors of pregnancy-related osteooporosis. However, exact etiology and pathogenesis are uncertain...
January 2017: Obstetrics & Gynecology Science
Jae-Heok Jeong, Kil-Pyo Hong, Yu-Ri Kim, Jae-Eun Ha, Kyu-Sup Lee
OBJECTIVE: If bowels and other structures are in the pathway of high-intensity focused ultrasound (HIFU) beam during magnetic resonance image-guided HIFU (MRgFUS) therapy, filling to the bladder and the rectum and then emptying the bladder (i.e., the BRB technique) is used to avoid them. A modified BRB technique might be useful method to using a uterine elevator method or by inducing uterus downward traction to lower the position of the uterus. METHODS: A total of 156 patients who had undergone MRgFUS surgery treatment for uterine fibroids from March 2015 to February 2016 were included in this retrospective study...
January 2017: Obstetrics & Gynecology Science
Byapak Paudel, Hyeun-Sung Kim, Jee Soo Jang, Jeong Hoon Choi, Sung Kyun Chung, Jung Sup Lee, Jeong Hoon Kim, Seong Hoon Oh, Il Tae Jang
Background Bertolotti syndrome is characterized by an abnormal enlargement of the transverse process of the most caudal lumbar vertebra. Most of the time it is asymptomatic, but when it is symptomatic it is associated with low back pain, radiating leg pain, or both. There is no consensus regarding management of this pathology. Open to minimal invasive tubular resection techniques are described in the literature, but a full endoscopic resection technique has not yet been described. Endoscopic technique is a less invasive target-oriented iliolumbar ligament preserving technique...
February 17, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
Ana Lourenco, Russell Thomas, Michael Homer, Hugo Bouchard, Severine Rossomme, James Renaud, Tatsuaki Kanai, Gary Royle, Hugo Palmans
The aim of this work is to develop and adapt a formalism to determine absorbed dose to water from graphite calorimetry measurements in carbon-ion beams. Fluence correction factors, <i>k</i><sub>fl</sub>, needed when using a graphite calorimeter to derive dose to water, were determined in a clinical high-energy carbon-ion beam. Measurements were performed in a 290 MeV/n carbon-ion beam with a field size of 11 x 11 cm<sup>2</sup>, without modulation. In order to sample the beam, a plane-parallel Roos ionization chamber was chosen for its small collecting volume in comparison with the field size...
February 17, 2017: Physics in Medicine and Biology
Ran Ji Yoo, Min Hwan Kim, Sang-Keun Woo, Kwang Il Kim, Tae Sup Lee, Yang-Kyu Choi, Joo Hyun Kang, Sang Moo Lim, Yong Jin Lee
INTRODUCTION: Macrophages play a key role in atherosclerotic plaque formation in atherosclerosis, but its detailed understanding has poorly investigated until now. Thus, we sought to demonstrate a noninvasive technique for macrophage tracking to atherosclerotic lesions in apolipoprotein E(-/-)(ApoE(-/-)) mice with an imaging system based on sodium iodide symporter (NIS) gene coupled with (99m)Tc-single-photon emission computed tomography (SPECT). METHODS AND RESULTS: Macrophage cells (RAW264...
January 25, 2017: Nuclear Medicine and Biology
Michal Bodik, Anna Zahoranova, Matej Micusik, Nikola Bugarova, Zdeno Spitalsky, Maria Omastova, Eva Majkova, Matej Jergel, Peter Siffalovic
We report on an ultrafast plasma-based graphene oxide reduction method superior to the conventional vacuum thermal annealing and/or chemical reduction. The method is based on the effect of non-equilibrium atmospheric-pressure plasma generated by the diffuse coplanar surface barrier discharge in proximity of the graphene oxide layer. As the reduction time is of the order of seconds, the presented method is applicable to large-scale production of the reduced graphene oxide layers. The short reduction times are achieved by a high volume power density of plasma which is of the order of 100 W/cm<sup>3</sup>...
February 16, 2017: Nanotechnology
Jun Yoshida, Yoshitaka Kubo, Kenji Yoshida, Kohei Chida, Masakazu Kobayashi, Kuniaki Ogasawara
Here we describe the case of a patient with moyamoya disease who developed cerebral infarction followed shortly by subarachnoid hemorrhage and intracerebral hemorrhage. A 50-year-old woman presenting with sudden and transient weakness of the left lower limb was transferred to a local hospital. Magnetic resonance imaging(MRI)revealed cerebral infarction in the corpus callosum and in the bilateral frontal lobes induced by moyamoya disease. Pyramidal tract was not affected. The patient was treated with an anti-platelet agent(ozagrel sodium 160mg/day)and did not undergo intentional antihypertensive therapy...
February 2017: No Shinkei Geka. Neurological Surgery
Hidetomo Murakami, Kenjiro Ono
Mitochondrial disease is caused by a deficiency in the energy supply to cells due to mitochondrial dysfunction. Mitochondrial encephalomyopathy, lactic acidosis and stroke-like episodes (MELAS) is a mitochondrial disease that presents with stroke-like episodes such as acute onset of neurological deficits and characteristic imaging findings. Stroke-like episodes in MELAS have the following features: 1) neurological deficits due to localization of lesions in the brain, 2) episodes often accompany epilepsy, 3) lesions do not follow the vascular supply area, 4) lesions are more often seen in the posterior brain than in the anterior brain, 5) lesions spread to an adjacent area in the brain, and 6) neurological symptoms often disappear together with imaging findings, but later relapse...
February 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
Lee Eddens, Sarah Browne, Emma J Stevenson, Brad Sanderson, Ken van Someren, Glyn Howatson
This study investigated the effect of protein supplementation on recovery following muscle-damaging exercise, which was induced with a concurrent exercise design. Twenty-four well-trained male cyclists were randomised to three independent groups receiving 20 g protein hydrolysate, iso-caloric carbohydrate or low-calorific placebo supplementation, per serve. Supplement serves were provided twice daily, from the onset of the muscle-damaging exercise, for a total of four days and in addition to a controlled diet (6 g•kg<sup>-1</sup>•d<sup>-1</sup> carbohydrate, 1...
February 15, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Daniel R Richardson, Sukesh Roy, James R Gord
Two-photon, planar laser-induced fluorescence (TP-PLIF) of carbon monoxide was performed in steady and driven flames using femtosecond (fs) laser pulses at 1 kHz. Excitation radiation at 230.1 nm (full-width at half-maximum bandwidth of 270  cm<sup>-1</sup>) was used to pump many rovibrational two-photon transitions in the B<sup>1</sup>∑<sup>+</sup>←X<sup>1</sup>∑<sup>+</sup> system. Visible fluorescence in the range 362-516 nm was captured using an image intensifier and high-speed camera...
February 15, 2017: Optics Letters
I P Mercer, T Witting, T Driver, R J Cogdell, J P Marangos, J W G Tisch
We demonstrate angle-resolved coherent (ARC) wave mixing using 4 fs light pulses derived from a laser source that spans 550-1000 nm. We believe this to be the shortest pulse duration used to date in coherent multi-dimensional spectroscopy. The marriage of this ultra-broad band, few-cycle coherent source with the ARC technique will permit new investigations of the interplay between energy transfers and quantum superposition states spanning 8200  cm<sup>-1</sup>. We applied this configuration to measurements on the photosynthetic low light (LL) complex from Rhodopseudomonas palustris in solution at ambient temperature...
February 15, 2017: Optics Letters
Lin Huang, Honglin An, Guobin Ren, Simon Fleming
In thermally poled optical fibers, the second-order nonlinearity has been observed to be distributed in a narrow layer more than 10 μm beneath the anode surface, a result that cannot be explained by current models. In this Letter, we propose a new model based on slow migration of H<sub>3</sub>O<sup>+</sup> and fast H<sup>+</sup> migration related to the H<sub>3</sub>O<sup>+</sup> concentration. The numerical simulation results show a narrow layer-shaped distribution of the induced second-order nonlinearity, which retains its magnitude and distribution profile in the migration process, and is in good agreement with the experimental observations...
February 15, 2017: Optics Letters
Jonas Junker, Patrick Oppermann, Benno Willke
The AEI 10 m Prototype interferometer is an experiment to investigate the standard quantum limit of interferometry and, in particular, its relevance in gravitational-wave detection. As such it has stringent requirements on the power stability of its high-power light source. In this Letter we present the power stabilization concept of the 35 W Nd:YAG laser system used in the AEI 10 m Prototype. With a shot-noise-limited multiphotodetector sensing scheme we achieved a relative power noise level of 1.8×10<sup>-9</sup>  Hz<sup>-1/2</sup> in a frequency band of 100 Hz to 1 kHz...
February 15, 2017: Optics Letters
Long Zhu, Chen Yang, Dequan Xie, Jian Wang
By designing and fabricating two kinds of orbital angular momentum (OAM) fibers, we demonstrate two OAM modes (OAM<sub>+1</sub> and OAM<sub>-1</sub>) multiplexing transmission and demultiplexing in OAM fiber links. Moreover, we also experimentally demonstrate 4-level pulse-amplitude modulation (PAM-4) signal transmission using two OAM modes multiplexing in a km-scale OAM fiber and achieve a bit-error rate (BER) below 2×10<sup>-3</sup> without multiple-input-multiple-output (MIMO) digital signal processing (DSP)...
February 15, 2017: Optics Letters
Huihong Lin, Ting Yu, Gongxun Bai, Qinyuan Zhang, Jianhua Hao
Near-infrared-to-near-infrared (NIR-to-NIR) anti-Stokes luminescence from Cr<sup>3+</sup> singly doped Ca<sub>3</sub>Ga<sub>2</sub>Ge<sub>3</sub>O<sub>12</sub> (CGGG) occurs under the excitation of an 808 nm diode laser. The anti-Stokes processes vary from one photon to two photon, depending on the Cr<sup>3+</sup> content (x) in Ca<sub>3</sub>Ga<sub>2-x</sub>Cr<sub>x</sub>Ge<sub>3</sub>O<sub>12</sub>...
February 15, 2017: Optics Letters
Yejun Wang, Cade Capps, Waruna D Kulatilaka
Ultrashort-pulse (femtosecond-duration) two-photon laser-induced fluorescence (fs-TPLIF) of an inert gas tracer krypton (Kr) is investigated. A detailed spectroscopic study of fluorescence channels followed by the 5p<sup>'</sup>←←4p excitation of Kr at 204.1 nm is reported. The experimental line positions in the 750-840 nm emission region agree well with the NIST Atomic Spectra Database. The present work provides an accurate listing of relative line strengths in this spectral region. In the range of laser pulse energies investigated, a quadratic dependence was observed between the Kr-TPLIF signal and the laser pulse energy...
February 15, 2017: Optics Letters
F X Morrissey, T Y Fan, D E Miller, D Rand
A multistage cryogenic chirped pulse amplifier has been developed, utilizing two different Yb-doped gain materials in subsequent amplifier stages. A Yb:GSAG regenerative amplifier followed by a Yb:YAG power amplifier is able to deliver pulses with a broader bandwidth than a system using only one of these two gain media throughout. We demonstrate 90 mJ of pulse energy (113 W of average power) uncompressed and 67 mJ (84 W of average power) compressed at 1.25 kHz pulse repetition frequency, 3.0 ps FWHM Gaussian pulse width, and near-diffraction-limited (M<sup>2</sup><1...
February 15, 2017: Optics Letters
Hongkun Nie, Peixiong Zhang, Baitao Zhang, Kejian Yang, Lianhan Zhang, Tao Li, Shuaiyi Zhang, Jianqiu Xu, Yin Hang, Jingliang He
A diode-end-pumped continuous-wave (CW) and passively Q-switched Ho, Pr:LiLuF<sub>4</sub> (Ho, Pr:LLF) laser operation at 2.95 μm was demonstrated for the first time, to the best of our knowledge. The maximum CW output power was 172 mW. By using a monolayer graphene as the saturable absorber, the passively Q-switched operation was realized, in which regimes with the highest output power, the shortest pulse duration, and the maximum repetition rate were determined to be 88 mW, 937.5 ns, and 55.7 kHz, respectively...
February 15, 2017: Optics Letters
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