185 research outputs found
Hitome de wakaru Shina jihen to Nisso kankei echizu /
No full textRelief shown by shading and pictorially.; 880-06 Published as supplement to a women magazine, 'Fujin Kurabu', Nov 1937 issue.; Legends include: frontline of China-Japan conflict, pill box of Soviet Army front lines, military ports, military airports, disposition of Red Army troops, the Great Wall of China, areas occupied by the Japanese army in the Sino-Japanese Conflict so far (as of 1 October 1937), areas bombed by the Japanese (as of 1 October 1937).; The main map includes numerous pictorial features of people in each country and region on the map. Names of major cities are given, and several charts, such as a chronological chart of development of Sino-Japanese War and the chart of Soviet Union's army's armaments.; 880-07 Seizu Ebihara Bingo --- on the edge of two maps on the other side; Also available online http://nla.gov.au/nla.map-vn6856147. Cartoon style map of China (Japanese Women's Club)Map of East Asia and Soviet, detailing the development of the SIno-Japanese Conflict and the relationship of the Soviet Union and Japan at that time.Shina jihen to Nisso kankei echizu880-03 title of the map on verso: Konan chiho jikyoku shosaizu880-0 4 title of the map on verso: Shanhai, Nankin fuki
Laparoscopic real-time vessel navigation using indocyanine green fluorescence during laparoscopy-assisted gastric tube reconstruction: First experience
No full textA considerable percentage of morbidity and mortality after oesophagectomy is due to leakage of oesophagogastrostomy, which is mainly caused by ischaemia of the gastric tube. Therefore, we performed laparoscopic real-time vessel navigation (LRTVN) using indocyanine green fluorescence (ICG) during laparoscopy-assisted gastric tube reconstruction (LAGR) to evaluate gastric tube blood flow and avoid vascular injury. This study included five oesophageal cancer patients who underwent video-assisted thoracoscopic oesophagectomy and LAGR. We confirmed the presence of the left gastroepiploic artery (LGEA) in all cases, and no findings such as post-operative gastric tube ischaemia were observed. In all cases, no vascular injury was observed, and the vascularization of LGEA was confirmed. This report is the first to consider the usefulness of LRTVN using ICG during LAGR. LRTVN using ICG during LAGR was considered to be useful for evaluating gastric tube blood flow and avoiding vascular injury around the splenic hiatus
Robotic Distal Gastrectomy With a Novel “Preemptive Retropancreatic Approach” During Dissection of Suprapancreatic Lymph Nodes for Gastric Cancer
No full textIntroduction: Abrogating contact with the pancreas in suprapancreatic lymph nodes dissection for gastric cancer can prevent pancreatic fistula because of postoperative pancreatic damage. Our novel "Preemptive retropancreatic approach" is a useful technique that minimizes pancreatic compression during robotic distal gastrectomy (RDG) with multijointed forceps. Here, we report the usefulness of RDG for gastric cancer surgery using our novel "Preemptive retropancreatic approach". Materials: "Preemptive retropancreatic approach": initial dissection of the bilateral retropancreatic space, the adherence between the retroperitoneum surface and the pancreas (fusion fascia) is released, providing a good operative field and hindering contact with the pancreas in suprapancreatic lymph nodes dissection during RDG. We herein reported consecutive 30 patients with gastric cancer who underwent RDG at Hokkaido University from September 2014 to March 2020. Results: All operations were performed by a single surgeon (Y.E.). The median operating time was 281 minutes (132 to 415). The median intraoperative bleeding was 0 ml of blood (0 to 255). There were 2 incidences of postoperative complications (>= Clavien-Dindo classification II), and there were no cases of postoperative pancreas-related complications. The median length of hospital stay after the surgery was 10 days (6 to 33). Conclusion: As RDG for gastric cancer is still in its early introductory phase, its superiority has yet to be definitively established. However, we believe that "Preemptive retropancreatic approach" may reduce postoperative pancreatic-related complications in suprapancreatic lymph nodes dissection
Long-Term Outcome After Resection of Non-small Cell Lung Carcinoma Complicated by Pneumoconiosis.
No full textPurpose Lung cancer resection in patients with respiratory complications is associated with a high surgical risk and the operative indications are usually serious. Consequently, the long-term results are unclear. We aimed to clarify the validity of surgery for non-small cell lung cancer (NSCLC) in patients with pneumoconiosis.
Methods We reviewed the clinical and pathological data of 122 patients undergoing resection of NSCLC with pneumoconiosis (n = 34: group A) or without pneumoconiosis (n = 88: group B) to assess treatment outcomes and prognostic factors.
Results Among the treatment factors, intraoperative blood loss was significantly greater in group A (723.2 ± 647.3 ml) than in group B (466.4 ± 450.7 ml) (P = 0.0067), although the operative times (207 ± 103.4 min vs 196.1 ± 53.5 min, respectively) and postoperative drainage period (8.3 ± 4.2 days vs 8.5 ± 5.7 days, respectively) did not differ significantly between the two groups (P = 0.9466 and P = 0.6355, respectively). Among the postoperative complications, the incidence of hemorrhage was significantly higher in group A (29.4%) than in group B (7.9%) (P = 0.0022). The 5-year survival rates did not differ significantly between the two groups, (45.9% and 55.7% for groups A and B respectively) (P = 0.9424).
Conclusions The coexistence of pneumoconiosis does not adversely affect postoperative survival or the treatment of NSCLC, although it is associated with increased intraoperative blood loss and postoperative hemorrhage. Thus, if precautions are taken to minimize hemorrhage, surgery cannot be excluded as a treatment option for NSCLC in patients with pneumoconiosis
Short-term outcomes of robotic distal gastrectomy with the "preemptive retropancreatic approach" : a propensity score matching analysis
No full textWe report the usefulness of the preemptive retropancreatic approach (PRA) in robotic distal gastrectomy (RDG) using multi-jointed forceps. Therefore, this study aimed to compare the short-term outcomes of RDG with PRA and conventional laparoscopic distal gastrectomy using the propensity score matching method. A total of 126 patients [RDG = 55; laparoscopic distal gastrectomy (LDG) = 71] were retrospectively enrolled. Patients were matched using the following propensity score covariates: age, sex, body mass index, American Society of Anesthesiologists physical status, the extent of lymph node dissection, and Japanese Classification of Gastric Carcinoma stage. Surgical results and postoperative outcomes were compared. We identified 28 propensity score-matched pairs. The median operative time and blood loss were comparable (P = 0.272 and P = 0.933, respectively). Regarding postoperative outcomes, the incidence of postoperative complications [Clavien-Dindo classification II (CD >= II)] was lower in the RDG group than in the LDG group (P = 0.020). No significant differences in the peak C-reactive protein value and length of hospital stay were observed between the two groups (P = 0.391 and P = 0.057, respectively). In addition, no patients had postoperative pancreas-related complications (>= CD II) in the RDG group. RDG using PRA seems to be a safe and feasible procedure for gastric cancer because of short-term outcomes and reduction of postoperative complications (especially postoperative pancreas-related complications) as compared to conventional LDG
Detection of sentinel lymph node with a novel near-infrared fluorescence spectrum system and indocyanine green fluorescence in patients with early breast cancer : First clinical experience
No full textBackground: Sentinel lymph node biopsy (SLNB) for early breast cancer is common, and many studies have re-ported its usefulness with indocyanine green (ICG). However, in the case of sentinel lymph node (SNs) identi-fication using ICG, it is difficult to accurately identify the fluorescence signal of SNs through the skin because of the weakening of the signal due to the intervening tissue thickness. In this study, we examined whether fluo-rescence spectroscopy can detect weaker fluorescence signals and accurately identify SNs that have accumulated ICG.Methods: Six women with early breast cancer and clinically confirmed negative axillae were recruited. The periareolar region was subcutaneously injected with ICG (1 ml, 5 mg/mL). The identification rate of SNs in the skin was studied using the novel fluorescence spectroscopy (LumifinderTM, ADVANTEST, Tokyo, Japan).Results: LumifinderTM was able to identify 100% of SNs in the skin (6/6 patients). In addition, for SNs identifi-cation in deeper axillary areas, pressing the probe tip against the body surface allows clearer fluorescence observation.Conclusion: Novel fluorescence spectroscopy (LumifinderTM) may overcome the problem of SLNB using ICG for breast cancer
Effects of preoperative psoas muscle index and body mass index on postoperative outcomes after video‐assisted esophagectomy for esophageal cancer
No full textIntroduction: Preoperative psoas muscle index (PMI) and body mass index (BMI) are relevant to postoperative outcomes. We investigated the associations of PMI, BMI, and preoperative nutritional and muscular score with postoperative outcomes in patients with esophageal cancer who underwent video-assisted surgery. Methods: We examined 150 patients (124 men, 26 women) who underwent video-assisted esophagectomy from February 2002 to March 2016. We used the Clavien-Dindo (CD) classification to analyze postoperative complications. Because skeletal muscle volume differs significantly between male and female patients, all analyses were performed separately. In male patients, we used the following cut-off values to categorize patients into three groups: PMI = 600 mm(2)/m(2), BMI = 18.5 kg/m(2), and preoperative nutritional and muscular (PNM) scores 0 to 2. Results: Two patients were converted to open thoracotomy. Among male patients, PMI and PNM scores were significant risk factors for complications. Among male patients, in the high PMI group, the number of CD >= IIIa complications was significantly lower. In the PNM score 0 group (both PMI and BMI values exceeded the cut-off values), the number of complications was significantly lower. In both genders, PMI and BMI were not significantly associated with survival. Conclusions: PMI and PNM scores can be useful for predicting postoperative outcomes in male patients with esophageal cancer having undergone video-assisted surgery
Underwater acoustic communication using Doppler-resilient orthogonal signal division multiplexing in a harbor environment
No full textUnderwater acoustic (UWA) channels are one of the historical mobile ultrawideband channels characterized by large delay and Doppler spreads, but reliable UWA communication remains challenging. Here we performed an initial demonstration of the Doppler-resilient orthogonal signal division multiplexing (D-OSDM) technique in an actual sea environment. D-OSDM spreads data symbols in both time and frequency with guardbands to exploit the time and frequency diversity of UWA channels. The experiment was performed in a challenging scenario: the transmitter was fixed on a floating pier, and the receiver was mounted on a moving remote-controlled boat. The harbor UWA channel had a delay spread of 50 ms and a Doppler spread of up to 4.5 Hz, in the presence of additive Gaussian noise, and the combination of two Rayleigh fading models (a two-path model without Doppler spread and a multi-path model with Doppler spread) was able to successfully model the actual environment. Our results also confirmed that a UWA communication link using D-OSDM will deliver excellent reliability even for a harbor UWA channel with a mobile receiver; D-OSDM achieves better communication quality compared to other communication schemes in both simulations and experiments.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Signal Processing System
Underwater Acoustic Communication Using Multiple-Input-Multiple-Output Doppler-Resilient Orthogonal Signal Division Multiplexing
No full textIn this paper, we propose a novel underwater acoustic (UWA) communication scheme that achieves energy and spectrum efficiency simultaneously by combining Doppler-resilient orthogonal signal division multiplexing (D-OSDM) and multiple-input-multiple-output (MIMO) signaling. We present both the transmitter processing and the receiver processing for MIMO D-OSDM. We evaluate the performance of MIMO D-OSDM in simulations with a large intersymbol interference of 25 symbols and a Doppler spread with a maximum Doppler shift of 8 Hz. In addition, the sea trial is performed in Suruga Bay, where the receiver is mounted on a barge and a research vessel with the transmitter makes round trips along a line with a speed of 4 kn. In the experiments, we obtain an intersymbol interference of 3.6-29.7 symbols and a Doppler spread of several Hertz (leading to a spread of over two to three subcarrier spacings). The simulation results suggest that MIMO D-OSDM has an advantage over normal D-OSDM, Doppler-resilient MIMO orthogonal frequency division multiplexing (MIMO D-OFDM), and classical OFDM with MIMO signaling (MIMO OFDM) - MIMO D-OSDM achieves better bit error rate performance than the benchmarks. The sea trial results also support the advantage of MIMO D-OSDM - it achieves a coded block error rate of 3.2% while normal D-OSDM and MIMO D-OFDM achieve a coded block error rate of 9.7% and 9.3%, respectively. We conclude that MIMO D-OSDM can become a viable technique that achieves reliable and effective UWA communication. Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Signal Processing System
Doppler-Resilient Orthogonal Signal-Division Multiplexing for Underwater Acoustic Communication
No full textUnderwater acoustic (UWA) channels are characterized by a severe spread in time and frequency, and are usually labeled as “doubly spread channels.” In this paper, we propose Doppler-resilient orthogonal signal-division multiplexing (D-OSDM), to provide a highly reliable communication environment in doubly spread channels for UWA communication. D-OSDM multiplexes several data vectors in addition to a pilot vector, and preserves orthogonality among them even after propagation through doubly spread channels, under the assumption that the channel can be modeled by a basis expansion model (BEM). We describe the signal processing steps at the transmitter and the receiver for D-OSDM, and evaluate its performance by both simulations and experiments. To generate a doubly spread channel, a test tank with a wave generator is employed. The obtained results suggest that D-OSDM can provide low-power and high-quality UWA communications in channels with large delay and Doppler spreads; for example, D-OSDM succeeds to achieve a block error rate (BLER) of 10 -3 while BEM-based orthogonal frequency-division multiplexing (OFDM) has a BLER floor of 10 -2 in the experiments. Equivalently, D-OSDM can reduce the signal power required for communications to achieve the same BER significantly. Overall, it was found that D-OSDM can become a powerful communication tool for underwater operations
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