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| 1 | Upper Devonian and Lower Carboniferous Sequence Stratigraphy of South China显示文摘In South China four depositional sequences are recognized in the upper part of Upper Devonian and Tournaisian. They are named SQ0 SQ1, SQ2 and SQ3 in ascending order. SQ0 is Strunian (uppermost Devonian), and the other three Tournaisian in age. These four depositional sequences appear to correlate fairly well with the four sequence recognized in Europe, North America and other areas. This may suggest that these sequences are synchronous depos- its resulted from the eustatic changes. The present study on sequence stratigraphy, biostratigraphy and event stratigraphy indicates that in neritic facies areas of South China, the Devonian-Carboniferous boundary, matching the boundary between Siphonodella praesulcata zone and S. sulcata zone in pelagic facies areas, is not only higher than the top of the Cystophrentis zone, but also higher than the top of the Devonian-Carboniferous boundary event bed. In neritic facies areas, the Devonian-Carbonifrerous boundary is marked by the most distinct transgressive surface within the Cystophrentiseudouralina interval zone, i. e. at the base of the TST of the SQ1. This boundary coincides with the top surface of the event bed resulted from the eustatic fall, and approximately corresponds to the basal part of Rseudouralina assemblage zone. | Wang Xunlian Li Shilong (Department of Geology and Mineral Resources, China University of Geosciences, Beijing 100083) Wang Yue (Mineral Office of Dushan County, Dushan 558200) | 1996 | Journal of Earth Science1996，15，1： | 12 |
| 2 | Cystic lymphangioma of the pancreas显示文摘Lymphangioma of the pancreas is an extremely rare benign tumour of lymphatic origin,with fewer than 60 published cases. Histologically,it is polycystic,with the cysts separated by thin septa and lined with endothelial cells. Though congenital,it can affect all age groups,and occurs more frequently in females. Patients usually present with epigastric pain and an associated palpable mass. Complete excision is curative,even though,depending on the tumour location,surgery may be simple or involve extensive pancreatic resection and anastomoses. The authors present a 49-year-old woman in whom a polycystic septated mass,35 mm x 35 mm in size,was discovered by ultrasonography (US) in the body of the pancreas during investigations for epigastric pain and nausea. At surgery,a well circumscribed polycystic tumor was completely excised,with preservation of the pancreatic duct. The postoperative recovery was uneventful. Histology confirmed a microcystic lymphangioma of the pancreas. Immunohistochemistry showed cystic endothelial cells reactivity to factor Ⅷ -RA (++),CD31 (+++) and CD34 (-). Postoperatively,abdominal pain disappeared and the patient remained symptomfree for 12 mo until now. Although extremely rare,lymphangioma of the pancreas should be taken into consideration as a differential diagnosis of a pancreatic cystic lesion,especially in women. | Radoje B Colovic Nikica M Grubor Marjan T Micev Henry Dushan E Atkinson Vitomir I Rankovic Mihajlo M Jagodic | 2008 | World Journal of Gastroenterology2008，14，44： | 6 |
| 3 | 高频双有源桥变流器自适应死区时间控制方法显示文摘在高频双有源桥(DAB)变流器中,开关死区时间对变流器开关换流特性有很大影响。高频DAB变流器零电压开关(ZVS)窗口会随工作点变化且窗口时间较短,采用传统固定死区时间的方案会由于变流器在某些工作点上死区时间过长而错过ZVS窗口,导致变流器效率降低。提出一种自适应死区时间控制方法,检测高频DAB变流器初级开关管漏源极电压,通过数字控制器动态调节死区时间长度,避免了死区时间过长而错过ZVS窗口的情况,使开关器件工作在ZVS条件下,从而提高了变流器的效率。在一个5 kW/500 kHz的高频DAB变流器试验平台上验证了该控制方法的有效性。 | 李锦 刘进军 Dushan Boroyevich | 2017 | 电力电子技术2017，51，12： | 4 |
| 4 | Perigastric extraskeletal Ewing's sarcoma: A case report显示文摘Ewing's sarcoma (ES) is a neoplasm of undifferentiated small round cells, which occurs in the bones and deep soft tissues of children and adolescents. We present a rare case of a 44-year-old woman with gastric ES presenting with epigastric pain and weight loss. Ultrasound and computed tomography scans indicated a solid/cystic mass in the pancreatic tail. At laparotomy, the tumor was found attached to the posterior surface of the stomach, completely free from the pancreas, with no lymphadenopathy or local metastases. The polynodal, partly pseudocystic, dark-red soft tumor was excised. Histopathology revealed an anaplastic small-round-cell tumor with strong membranous CD99 immunoexpression. Additionally, there was patchy immunostaining for S-100 protein, vimentin, protein gene product (PGP) 9.5 and neuron-specifi c enolase, and weak focal CD117 cytoplasmic immunoreactivity. The patient had no adjuvant chemotherapy; her postoperative recovery was uneventful, and she remains symptom-free, and without any sign of recurrence at 20 mo. To the best of our knowledge, this is only the third ever case of gastric ES. | Radoje B Colovic Nikica M Grubor Marjan T Micev Slavko V Matic Henry Dushan Edward Atkinson Stojan M Latincic | 2009 | World Journal of Gastroenterology2009，15，2： | 2 |
| 5 | Two synchronous somatostatinomas of the duodenum and pancreatic head in one patient显示文摘Somatostatinomas are extremely rare neuroendocrine tumors of the gastrointestinal tract,f irst described in the pancreas in 1977 and in the duodenum in 1979.They may be functional and cause somatostatinoma or inhibi-tory syndrome,but more frequently are non-functioning pancreatic endocrine tumors that produce somatostatin alone.They are usually single,malignant,large lesions,frequently associated with metastases,and generally with poor prognosis.We present the unique case of a 57-year-old woman with two synchronous non-function-ing somatostatinomas,one solid duodenal lesion and one cystic lesion within the head of the pancreas,that were successfully resected with a pylorus-preserving Whipple's procedure.No secondaries were found in the liver,or in any of the removed regional lymph nodes.The patient had an uneventful recovery,and remains well and symptom-free at 18 mo postoperatively.This is an extremely rare case of a patient with two synchro-nous somatostatinomas of the duodenum and the pancreas.The condition is discussed with reference to the literature. | Radoje B olovi Slavko V Mati Marjan T Micev Nikica M Grubor Henry Dushan Atkinson Stojan M Latini | 2009 | World Journal of Gastroenterology2009，15，46： | 1 |
| 6 | New Feed Forward Space-vector PWM Method to Obtain Balanced AC Output Voltages in a Three-level Neutral -point-clamped Converter显示文摘 | Josep Pou Dushan Boroyevich Rafael Pindado | 2002 | IEEE Transactions on Industrial Electronics2002，49，5： | 1 |
| 7 | Abdominal neurenteric cyst显示文摘Neurenteric cysts are extremely rare congenital anomalies,often presenting in the first 5 years of life,and are caused by an incomplete separation of the notochord from the foregut during the third week of embryogenesis. They are frequently accompanied with spinal or gastrointestinal abnormalities,but the latter may be absent in adults. Although usually located in the thorax,neurenteric cysts may be found along the entire spine. We present a 24-year-old woman admitted for epigastric pain,nausea,vomiting,low grade fever and leucocytosis. She underwent cystgastrostomy for a loculated cyst of the distal pancreas at the age of 4 years,which recurred when she was at the age of 11 years. Ultrasound and computer tomograghy(CT) scan revealed a 16 cm × 15 cm cystic mass in the body and tail of pancreas,with a 6-7 mm thickened wall. Laboratory data and chest X-ray were normal and spinal radiographs did not show any structural abnormalities. The patient underwent a complete cyst excision,and after an uneventful recovery,remained symptom-free without recurrence during the 5-year follow-up. The cyst was found to contain 1200 mL of pale viscous fluid. It was covered by a primitive single-layered cuboidal epithelium,along with specialized antral glandular parenchyma and hypoplastic primitive gastric mucosa. Focal glandular groups resemblingthose of the body of the stomach were also seen. In addition,ciliary respiratory epithelium,foci of squamous metaplasia and mucinous glands were present. The wall of the cyst contained a muscular layer,neuroglial tissue with plexogenic nerve fascicles,Paccini corpuscle-like structures,hyperplastic neuroganglionar elements and occasional psammomatous bodies,as well as fibroblast-like areas of surrounding stroma. Cartilagenous tissue was not found in any part of the cyst. Immunohistochemistry confirmed the presence of neurogenic elements marked by S-100,GFAP,NF and NSE. The gastric epithelium showed mostly CK7 and EMA immunoexpression,and the respiratory epithelium revealed a CK8 and CK18 immunoprofile without CK 10/13 positive elements,though neither CEA or AFP positive cells were found. To our knowledge,this is the first reported case of an abdominally located neurenteric cyst with no associated spinal anomalies. | Radoje olovi Marjan Micev Miodrag Jovanovi Slavko Mati Nikica Grubor Henry Dushan E Atkinson | 2008 | World Journal of Gastroenterology2008，14，23： | 1 |
| 8 | Pulmonary hemorrhage: A novel complication after extracorporeal life support显示文摘 | Michael J Goretsky Dushan Martinasek Brad W Warner | 1996 | Journal of Pediatric Surgery1996，，9： | 1 |
| 9 | A fast spacevector modulation algorithm for multilevel threephase converters显示文摘 | Nikola Celanovic Dushan Boroyevich | | 0，，02： | 1 |
| 10 | A Fast Spacevector Modulation Algorithm for Multilevel Three-phase Converters显示文摘 | Nikola Celanovic Dushan Boroyevich | 2001 | IEEE Transactions on Industry Applications2001，37，2： | 1 |
| 11 | Theoretical and experimental investigation of the fast-and slow-scale instabilities of a DC-DC coverter显示文摘 | Sudio K Mazumder Ali H Nayfeh Dushan Boroyevich | 2001 | IEEE Transactions on Power Electronics2001，16，2： | 1 |
| 12 | New high power,high performance power converter systems显示文摘 | Zhang Richard Lee Fred C Boroyerich Dushan | 2000 | IEEE Trans on Power Electronics2000，15，3： | 1 |
| 13 | A 100 kW high-performance PWM rectifier with a ZCT soft-switching technique显示文摘 | Wu Jia Lee Fred C Dushan Boroyevich | 2003 | IEEE Transactions on Power Electronics2003，18，6： | 1 |
| 14 | IGBT device application aspects for 50kW zero-current-transition inverters显示文摘 | Li Y Lee Fred C Dushan Boroyevich | 2004 | IEEE Transactions on Industrial Electronics2004，40，4： | 1 |
| 15 | A fast space-vector modulation algorithm for multi-level three-phase conver-ters显示文摘 | Nikola Celanovic Dushan Boroyevich | 2001 | IEEE Transaction on Industry Applications2001，37，2： | 1 |
| 16 | A simplified three-phase zero-current-transition inverter with three auxiliary switches显示文摘 | Li Y Lee Fred C Dushan Boroyevich | 2003 | IEEE Transactions on Power Electronics2003，18，3： | 1 |
| 17 | IGBT device application aspects for 50 kW zero-current-transition in- verters 显示文摘 | Yong P Li Fred C Lee Dushan Boroyevich | 2004 | IEEE Transactions on Industry Applications2004，40，4： | 1 |
| 18 | A comprehensive study of neutral-point voltage balancing problem in three-level neutral-point-clamped voltage source PWM inverters显示文摘 | Nikola Celanovic Dushan Boroyevich | 2000 | IEEE Transactions on Power Electronics2000，15，2： | 1 |
| 19 | Indicatiens for repair of ventricular septal defects 显示文摘 | Kirklin JW Dushane JW | 1963 | Am J Cardiol1963，12，： | 1 |
| 20 | A comprehensive study of neutral-point voltage balancing problem in three-level neutral-pointclamped voltage source PWM inverters显示文摘 | Nikola Celanovic Dushan Boroyevich | 2000 | IEEE TRANSACTIONS ON POWER ELECTRONICS2000，15，： | 1 |
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