Laparoscopic wedge resection is a useful procedure fortreating patients with submucosal tumor(SMT) including gastrointestinal stromal tumor(GIST) of the stomach. However, resection of intragastric-type SMTs can be pro...Laparoscopic wedge resection is a useful procedure fortreating patients with submucosal tumor(SMT) including gastrointestinal stromal tumor(GIST) of the stomach. However, resection of intragastric-type SMTs can be problematic due to the difficulty in accurately judging the location of endoluminal tumor growth, and often excessive amounts of healthy mucosa are removed; thus, full-thickness local excision using laparoscopic and endoscopic cooperative surgery(LECS) is a promising procedure for these cases. Our experience with LECS has confirmed this procedure to be a safe, feasible, and minimally invasive treatment method for gastric GISTs less than 5 cm in diameter, with outcomes similar to conventional laparoscopic wedge resection. The important advantage of LECS is the reduction in the resected area of the gastric wall compared to that in conventional laparoscopic wedge resection using a linear stapler. Early gastric cancer fits the criteria for endoscopic resection; however, if performing endoscopic submucosal dissection is difficult, the LECS procedure might be a good alternative. In the future, LECS is also likely to be indicated for duodenal tumors, as well as gastric tumors. Furthermore, developments in endoscopic and laparoscopic technology have generated various modified LECS techniques, leading to even less invasive surgery.展开更多
We apply the energy momentum and angular momentum tensor to a tetrad field, with two unknown functions of radial coordinate, in the framework of a teleparallel equivalent of general relativity （TEGR）. The definition...We apply the energy momentum and angular momentum tensor to a tetrad field, with two unknown functions of radial coordinate, in the framework of a teleparallel equivalent of general relativity （TEGR）. The definition of the gravitational energy is used to investigate the energy within the external event horizon of the dyadosphere region for the Reissner-NordstrSm black hole. We also calculate the spatial momentum and angular momentum.展开更多
Nb-doped TiC ceramic,or (NbyTi1-y) Cx,in which amount of Nb element added is increased from zero to 40Wt. %, synthisized -with self-propagating high temperature synthesis,is studied with SCF-Xa-DV,a quantum chemistry ...Nb-doped TiC ceramic,or (NbyTi1-y) Cx,in which amount of Nb element added is increased from zero to 40Wt. %, synthisized -with self-propagating high temperature synthesis,is studied with SCF-Xa-DV,a quantum chemistry cal-culating method. The chemical bonding is studied to discuss the relation between structrues and properties. Several classes of models in which there is no vacancy,one vacancy or two vacan-cies have been calculated. From the calculated results of bond or-der, a measure of covalent bond strength,and molecule orbital contour map, it is concluded that when Nb element added in-creases, the vacancies increase correspondingly,the covalent com-ponent of chemical bonds of the samples decreases -while the met-al-bonding component increases, so the hardness and resistance of the samples decrease.展开更多
Currently there is an increase in the emergence and re-emergence of bacterial infections,and lichens are potential sources of pharmaceutically important secondary metabolites to halt this problem.Lichens are unique pl...Currently there is an increase in the emergence and re-emergence of bacterial infections,and lichens are potential sources of pharmaceutically important secondary metabolites to halt this problem.Lichens are unique plant-like organisms which are relatively less explored in the Philippines.Here,lichen extracts of Leptogium cochleatum and Leptogium moluccanum were tested against Escherichia coli,Enterobacter agglomerans,Klebsiella pneumoniae,Pseudomonas aeruginosa,and Staphylococcus aureus using paper disk diffusion assay.Hexane extract of L.moluccanum led to a 17.14 mm zone of inhibition(ZOI)against K.pneumoniae,while hexane extract of L.cochleatum led to a 15.28 mm ZOI against E.agglomerans.Dichloromethane extracts of L.cochleatum exhibited a ZOI of 15.86 mm against E.agglomerans and 14.84 mm ZOI against E.coli.The bioactivities exhibited by the lichen extracts may be due to the secondary metabolites detected using thin layer chromatography.Indeed,lichen-derived bioactive compounds hold great promise for pharmaceutical applications for the benefit of human life.展开更多
Aim :To observe the qualitative changes in phantom s after they were heated by microwave atennas for hypertherm ia and to confirm the fundamental of the length of m icrowave atennas for hypertherm ia and the depth of ...Aim :To observe the qualitative changes in phantom s after they were heated by microwave atennas for hypertherm ia and to confirm the fundamental of the length of m icrowave atennas for hypertherm ia and the depth of microwave atennas inserting tissue in treatm ent.Methods: Different length of microwave atennas for hypertherm ia were inserted respectively into phantoms which are m ake up of cuboid lettuce.To measure the ranges of the qualitative changes in phantoms in the same heated time.Results: When the depth of microwave atennas inserting phantom is two times the length of antenna,the axes length of the qualitative change in the phantom is longer and the vertical length of the qualitative change in the phantom is smaller along with the length of the antenna increases.To equalength’s antennas,it is same as the form er when the depth of microwave atennas inserting increases. Conclusion:The length of microwave antennas for hyperthermia to treatment should be la≥ 1. 5 cm. The depth of microwave atennas inserting tissue in treatment should be d≥ 3cm. The changes of the length of m icrowave atennas and the depth of microwave atennas inserting can reform the patter of the qualitative change in the展开更多
针对室内环境中视觉同时定位与建图(simultaneous localization and mapping,SLAM)精度不高和实用性较差等问题,采用深度相机作为传感器,提出一种基于改进词袋模型的视觉SLAM算法。该算法通过增加节点距离的方式,对传统的词袋模型进行改...针对室内环境中视觉同时定位与建图(simultaneous localization and mapping,SLAM)精度不高和实用性较差等问题,采用深度相机作为传感器,提出一种基于改进词袋模型的视觉SLAM算法。该算法通过增加节点距离的方式,对传统的词袋模型进行改进,采用octree方法转化点云,生成可用于导航的八叉树图,并进行改进前后词袋模型对比实验、数据集精度实验和实验室实测。结果表明,改进后的词袋模型相似度计算能力和区分度更强,SLAM算法在环境有回环和相机运动较慢的情况下,效果较好,可满足室内同时定位与建图及后续导航需求。展开更多
Bryum argenteum Hedw. is a desiccation tolerant bryophyte and belongs to one of the most important components of the biological soil crusts （BSCs） found in the deserts of Central Asia. Limited information is availab...Bryum argenteum Hedw. is a desiccation tolerant bryophyte and belongs to one of the most important components of the biological soil crusts （BSCs） found in the deserts of Central Asia. Limited information is available on rehydration-responsive proteins in desiccation tolerant plants. As a complement to our previous research analyzing the rehydration transcriptome, we present a parallel quantitative proteomic effort to study rehydration-responsive proteins. Bryophyte gametophores were desiccated （Dry） and rehydrated for 2 h （R2） and 24 h （R24）. Proteins from Dry, R2 and R24 gametophores were labeled by isobaric tags for relative and absolute quantitation （iTRAQ） to determine the relative abundance of rehydration-responsive proteins. A total of 5503 non-redundant protein sequences were identified and 4772 （86.7%） protein sequences were annotated using Gene Ontology （GO） terms and Pfam classifications. Upon rehydration 239 proteins were elevated and 461 proteins were reduced as compared to the desiccated protein sample. Differentially up-regulated proteins were classified into a number of categories including reactive oxygen species scavenging enzymes, detoxifying enzymes, Late Embryogenesis Abundant （LEA） proteins, heat shock proteins, proteasome components and proteases, and photosynthesis and translation related proteins. Furthermore, the results of the correlation between transcriptome and proteome revealed the discordant changes in the expression between protein and mRNA.展开更多
文摘Laparoscopic wedge resection is a useful procedure fortreating patients with submucosal tumor(SMT) including gastrointestinal stromal tumor(GIST) of the stomach. However, resection of intragastric-type SMTs can be problematic due to the difficulty in accurately judging the location of endoluminal tumor growth, and often excessive amounts of healthy mucosa are removed; thus, full-thickness local excision using laparoscopic and endoscopic cooperative surgery(LECS) is a promising procedure for these cases. Our experience with LECS has confirmed this procedure to be a safe, feasible, and minimally invasive treatment method for gastric GISTs less than 5 cm in diameter, with outcomes similar to conventional laparoscopic wedge resection. The important advantage of LECS is the reduction in the resected area of the gastric wall compared to that in conventional laparoscopic wedge resection using a linear stapler. Early gastric cancer fits the criteria for endoscopic resection; however, if performing endoscopic submucosal dissection is difficult, the LECS procedure might be a good alternative. In the future, LECS is also likely to be indicated for duodenal tumors, as well as gastric tumors. Furthermore, developments in endoscopic and laparoscopic technology have generated various modified LECS techniques, leading to even less invasive surgery.
文摘We apply the energy momentum and angular momentum tensor to a tetrad field, with two unknown functions of radial coordinate, in the framework of a teleparallel equivalent of general relativity （TEGR）. The definition of the gravitational energy is used to investigate the energy within the external event horizon of the dyadosphere region for the Reissner-NordstrSm black hole. We also calculate the spatial momentum and angular momentum.
文摘Nb-doped TiC ceramic,or (NbyTi1-y) Cx,in which amount of Nb element added is increased from zero to 40Wt. %, synthisized -with self-propagating high temperature synthesis,is studied with SCF-Xa-DV,a quantum chemistry cal-culating method. The chemical bonding is studied to discuss the relation between structrues and properties. Several classes of models in which there is no vacancy,one vacancy or two vacan-cies have been calculated. From the calculated results of bond or-der, a measure of covalent bond strength,and molecule orbital contour map, it is concluded that when Nb element added in-creases, the vacancies increase correspondingly,the covalent com-ponent of chemical bonds of the samples decreases -while the met-al-bonding component increases, so the hardness and resistance of the samples decrease.
文摘Currently there is an increase in the emergence and re-emergence of bacterial infections,and lichens are potential sources of pharmaceutically important secondary metabolites to halt this problem.Lichens are unique plant-like organisms which are relatively less explored in the Philippines.Here,lichen extracts of Leptogium cochleatum and Leptogium moluccanum were tested against Escherichia coli,Enterobacter agglomerans,Klebsiella pneumoniae,Pseudomonas aeruginosa,and Staphylococcus aureus using paper disk diffusion assay.Hexane extract of L.moluccanum led to a 17.14 mm zone of inhibition(ZOI)against K.pneumoniae,while hexane extract of L.cochleatum led to a 15.28 mm ZOI against E.agglomerans.Dichloromethane extracts of L.cochleatum exhibited a ZOI of 15.86 mm against E.agglomerans and 14.84 mm ZOI against E.coli.The bioactivities exhibited by the lichen extracts may be due to the secondary metabolites detected using thin layer chromatography.Indeed,lichen-derived bioactive compounds hold great promise for pharmaceutical applications for the benefit of human life.
文摘Aim :To observe the qualitative changes in phantom s after they were heated by microwave atennas for hypertherm ia and to confirm the fundamental of the length of m icrowave atennas for hypertherm ia and the depth of microwave atennas inserting tissue in treatm ent.Methods: Different length of microwave atennas for hypertherm ia were inserted respectively into phantoms which are m ake up of cuboid lettuce.To measure the ranges of the qualitative changes in phantoms in the same heated time.Results: When the depth of microwave atennas inserting phantom is two times the length of antenna,the axes length of the qualitative change in the phantom is longer and the vertical length of the qualitative change in the phantom is smaller along with the length of the antenna increases.To equalength’s antennas,it is same as the form er when the depth of microwave atennas inserting increases. Conclusion:The length of microwave antennas for hyperthermia to treatment should be la≥ 1. 5 cm. The depth of microwave atennas inserting tissue in treatment should be d≥ 3cm. The changes of the length of m icrowave atennas and the depth of microwave atennas inserting can reform the patter of the qualitative change in the
文摘针对室内环境中视觉同时定位与建图(simultaneous localization and mapping,SLAM)精度不高和实用性较差等问题,采用深度相机作为传感器,提出一种基于改进词袋模型的视觉SLAM算法。该算法通过增加节点距离的方式,对传统的词袋模型进行改进,采用octree方法转化点云,生成可用于导航的八叉树图,并进行改进前后词袋模型对比实验、数据集精度实验和实验室实测。结果表明,改进后的词袋模型相似度计算能力和区分度更强,SLAM算法在环境有回环和相机运动较慢的情况下,效果较好,可满足室内同时定位与建图及后续导航需求。
基金supported by the Scientific Service Project of Chinese Academy of Sciences (TSS-2015-014-FW-4-3)the National Science Foundation of China-Xinjiang Talent Youth Project (U1403302)
文摘Bryum argenteum Hedw. is a desiccation tolerant bryophyte and belongs to one of the most important components of the biological soil crusts （BSCs） found in the deserts of Central Asia. Limited information is available on rehydration-responsive proteins in desiccation tolerant plants. As a complement to our previous research analyzing the rehydration transcriptome, we present a parallel quantitative proteomic effort to study rehydration-responsive proteins. Bryophyte gametophores were desiccated （Dry） and rehydrated for 2 h （R2） and 24 h （R24）. Proteins from Dry, R2 and R24 gametophores were labeled by isobaric tags for relative and absolute quantitation （iTRAQ） to determine the relative abundance of rehydration-responsive proteins. A total of 5503 non-redundant protein sequences were identified and 4772 （86.7%） protein sequences were annotated using Gene Ontology （GO） terms and Pfam classifications. Upon rehydration 239 proteins were elevated and 461 proteins were reduced as compared to the desiccated protein sample. Differentially up-regulated proteins were classified into a number of categories including reactive oxygen species scavenging enzymes, detoxifying enzymes, Late Embryogenesis Abundant （LEA） proteins, heat shock proteins, proteasome components and proteases, and photosynthesis and translation related proteins. Furthermore, the results of the correlation between transcriptome and proteome revealed the discordant changes in the expression between protein and mRNA.
