检索结果-南通市图书馆

Pattern of Lymphatic Metastasis and Influencing Factors in Thoracic Esophageal Carcinoma

在线全文

学校读者我要写书评

暂无评论

Clinical oncology and cancer researeh 2009年第5期6卷 342-346页

作者： Jun Wang Chun han Shuchai zhu Chao Gao Xiaoning Li Department of Radiation Therapy the Fourth Hospital of Hebei Medical University Shijiazhuang 050011 Hebei Province China.

OBJECTIVE To explore the regular patterns of lymphatic metastasis in thoracic esophageal carcinoma （TEC） and the factors influencing these patterns. METHODS Data of 229 TEC patients who underwent radical esophagectomy and thoracoabdominal 2-field lymphadenectomy were reviewed. Within this patient population, a total of 2458 lymph nodes were dissected during surgery. The distribution of the nodular metastasis rates （NMR） in various diseased regions in the esophageal carcinoma （EC） patients as well as factors influencing metastases such as the depth of tumor infiltration, tumor size, tumor morphology, and degree of tumor differentiation were analyzed. RESULTS i） Lymphatic metastasis （LM） occurred in 102 EC cases, and the lymphatic metastasis rate （LMR） was 44.5% （102/229）. The NMR was 9.5% （258/2458）. ii） The NMRs were 19.0%, 6.7%, 9.8% and 12.2% in the superior, middle and inferior mediastinum, and abdominal cavity, respectively, in patients with EC in the superior thoracic segment; 26.1%, 7.4%, 11.8% and 11.9% in the same sites of the mediastinum, respectively, in those with middle thoracic-segment EC; and 0%, 1.6%, 5.3%, and 10.0%, respectively, in the same sites in those with inferior thoracic EC. iii） The LMRs of the EC patients in stage-T1, T2, T3 and T4 were 28.6%, 43.8%, 47.6% and 31.3%, respectively, and the NMRs of the patients were 7.9%, 10.8%, 10.7% and 10.8%, respectively. There were no significant differences between the LMR and the NMR of the EC patients in stage T1 to T4 （X^2 = 2.733, P = 0.435 and X2 = 0.686, P = 0.876）. iv） The LMR of the patients with the length of tumor 〈 3 cm, 〉 3 cm and 〈 5 cm, and 〉 5 cm were 45.2%, 43.4% and 46.2%, respectively, and the NMR according to the same range of the tumor size above were 9.1%, 11.6% and 11.7%, respectively. There were no significant differences between the groups （X2 --- 0.094, P = 0.954 and X2 = 3.933, P = 0.140）. v） The NMRs of the medullary, ulcerative, fungoid and sclerotic-type EC

关键词： esophageal carcinoma/thoracic segment lymphatic metastasis surgery.

在线全文

学校读者我要写书评

暂无评论

橡胶对水泥基材料干燥收缩性能的影响

复合材料学报 2017年第11期34卷 2624-2630页

作者：于泳朱涵天津大学建筑工程学院天津300350 天津大学滨海土木工程结构与安全教育部重点实验室天津300350

为了考察橡胶增加水泥基材料干燥收缩量的机制,以橡胶水泥砂浆作为研究对象,采用毛细管张力理论分析了造成水泥砂浆干燥收缩的因素。使用压汞试验研究橡胶/水泥砂浆的孔结构,并进行了弹性模量和干燥收缩试验。研究结果表明,橡胶掺入会... 详细信息

为了考察橡胶增加水泥基材料干燥收缩量的机制,以橡胶水泥砂浆作为研究对象,采用毛细管张力理论分析了造成水泥砂浆干燥收缩的因素。使用压汞试验研究橡胶/水泥砂浆的孔结构,并进行了弹性模量和干燥收缩试验。研究结果表明,橡胶掺入会降低水泥砂浆的弹性模量,增加其孔隙率和干燥收缩量,且相同掺量条件下,小粒径橡胶的作用效果更明显。基于试验数据,考虑橡胶掺入对砂浆弹性模量的折减系数KE和橡胶掺入对毛细孔(孔径<50nm的孔隙)数量的增加系数K_h,拟合了橡胶对水泥砂浆干燥收缩的影响参数δ_(mr)。

关键词：橡胶水泥砂浆干燥收缩弹性模量孔隙率

Role of rotational state-selected for nonadiabatic alignment： OCS molecules in femtosecond laser fields

在线全文

学校读者我要写书评

暂无评论

Frontiers of physics 2013年第2期8卷 236-240页

作者： Rui-han zhu Chun-Cheng Wang Si-Zuo Luo Xue Yang Mei-Xia Zhang Fu-Chun Liu Da-Jun Ding Institute of Atomic and Molecular Physics Jilin UniversityChina Changchun 130012 School of Science Changchun University of Science and TechnologyChina Changchun 130022

Nonadiabatic alignment by intense nonresonant the spatial direction of molecules： By solving the the degree of alignment of the molecules initially laser fields is a versatile technique to manipulate time-dependent SchrSdinger equation numerically in different rotational state are calculated and the results show that the degree of alignment strongly depends on the initial rotational state. Thus, the present study indicates that, for obtaining a high degree of alignment for molecules, appropriate selection of molecular rotational states is necessary.

关键词： nonadiabatic alignment rotational state-selection linear triatomic molecule

Robust asymmetric Cherenkov radiation in tilted anisotropic medium

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 46-51页

作者： Shuwen Xue Yadong Xu Linkang han Zhi Ning Chen Qiaoliang Bao Shan zhu Huanyang Chen Institute of Electromagnetics and Acoustics and Department of Physics College of Physical Science and TechnologyJiujiang Research InstituteXiamen UniversityXiamen 361005China School of Physical Science and Technology Institute of Theoretical and Applied PhysicsSoochow UniversitySuzhou 215006China Department of Electrical and Computer Engineering National University of SingaporeSingapore 8117583Singapore Institute of Energy Materials Science(IEMS) University of Shanghai for Science and TechnologyShanghai 200093China

Cherenkov radiation(CR)is available for a wide variety of terahertz(THz)radiation sources,but its efficiency is deeply affected by intrinsic *** find that if the tilted angle(α)of anisotropic material and radiation angle(θ)meet the condition ofθ+α=π/2,the intensity of radiation fields for the charged particle bunch(CPB)moving from left to right cannot be influenced by intrinsic losses,which means long-distance radiation can be ***,we observe an asymmetric CR when the CPB moves from the opposite *** addition,we select natural van der Waals(vd W)materialα-MoO3as an example,further confirming that the radiation field can reach the far field and the asymmetric CR radiation can also be *** wonderful properties with long-distance radiation will extend the application of CR to a certain extent for future design and fabrication.

关键词： asymmetric Cherenkov radiation intrinsic losses long-distance radiation

在线全文

学校读者我要写书评

暂无评论

复方甘芪止咳颗粒的处方优化和质量评价研究

中国药物评价 2024年第1期41卷 41-46页

作者：刘晓艳雷文娟王萌韩孟敏史彦斌酒钢医院甘肃嘉峪关735100 甘肃省人民医院甘肃兰州730000 兰州大学甘肃兰州730000 甘肃中医药大学甘肃兰州730000

目的:优化复方甘芪止咳颗粒的处方组成,并建立该制剂质量评价方法。方法:采用HPLC法测定甘草酸铵、甘草苷和黄芪甲苷含量;采用正交实验L_(9)(3^(4))对复方甘芪止咳颗粒处方组成进行优化;参照《中国药典》收载的颗粒剂质量评价项目对其... 详细信息

目的:优化复方甘芪止咳颗粒的处方组成,并建立该制剂质量评价方法。方法:采用HPLC法测定甘草酸铵、甘草苷和黄芪甲苷含量;采用正交实验L_(9)(3^(4))对复方甘芪止咳颗粒处方组成进行优化;参照《中国药典》收载的颗粒剂质量评价项目对其质量进行评价。结果:复方甘芪止咳颗粒的最佳处方组成为1.0%羧甲基纤维素钠(CMC-Na)为粘合剂、淀粉:糊精(1∶1,w/w)为填充剂、1.2%干淀粉为崩解剂;薄层色谱可有效监测颗粒中黄芪甲苷和甘草苷;颗粒中黄芪甲苷和甘草苷、甘草酸铵含量约为29.21μg·g^(-1)、2.45 mg·g^(-1)和10.72 mg·g^(-1)。结论:优化的复方甘芪颗粒处方具备优良的成型性和溶散性;质量评价方法可有效控制该颗粒剂的质量。

关键词：复方甘芪止咳颗粒处方优化质量评价

Field-based evidence for the enrichment of intrinsic antibiotic resistome stimulated by plant-derived fertilizer in agricultural soil

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第1期135卷 728-740页

作者： Shihai Liu Ziming han Dong zhu Xiao Luan Liujie Deng Liping Dong Min Yang Yu Zhang State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China State Environmental Protection Engineering Center for Harmless Treatment and Resource Utilization of Antibiotic Residues Khorgos 835007China University of Chinese Academy of Sciences Beijing 100049China

Animal manures have been demonstrated to enhance antibiotic resistance in agricultural ***,little is known about the effects of plant-derived fertilizer on soil antibiotic ***,metagenomic sequencing was used to investigate the effects of a plantderived fertilizer processed from sugarcane and beet on soil antibiotic resistance genes(ARGs)in a soybean field along crop growth *** profiles in the soils amended by plant-derived fertilizer were compared with those in the soils amended by chicken *** abundance and diversity of total ARGs in the soils amended by plant-derived fertilizer were significantly(Phan in unamended soils at the sprout stage of soybean were considered as enriched *** in the abundance of the enriched ARGs was observed in both the amended soils from the sprout to the *** analysis further identified Proteobacteria and Bacteroidetes as the primary bacterial taxa involved in the temporal variation of the enriched ARGs in the soils amended by plant-derived fertilizer,while in manured soils were Firmicutes and *** revealed by multivariate statistical analyses,variation of the enriched ARGs in the soils amended by plant-derived fertilizer was majorly attributed to the response of co-occurred bacteria to depleting nutrients,which was different from the failed establishment of manure-borne bacteria in the manured *** study provided field-based evidence that plant-derived fertilizer stimulated the intrinsic antibiotic resistome,and proposed attention to the un-perceived risk since some clinically relevant ARGs originate and evolve fr

关键词： Organic fertilizer Intrinsic antibiotic resistance Indigenous bacteria Metagenomic sequencing

Energy saving analysis for CO_(2)–O_(2)mixed injection technology in converter steelmaking

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2024年第5期31卷 1095-1103页

作者： Bao-chen han Chun-liang Gao Ya-qiang Li Dan Liu Guang-sheng Wei Rong zhu Hebei Key Laboratory of Material Near-Net Forming Technology School of Material Science and EngineeringHebei University of Science and TechnologyShijiazhuang050018HebeiChina Department of Automotive Engineering Hebei Vocational University of Technology and EngineeringXingtai054000HebeiChina School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China

Energy-saving in China's iron and steel industry still relies on the development and improvement of short-term energy saving ***,a special converter smelting technology incorporating energy saving was *** evaluate the energy-saving potential of the CO_(2)–O_(2)mixed injection(COMI)technology,collected production data were used to develop an improved techno-economic *** reveal that the technology can save energy through auxiliary material consumption,sensible heat of solid by-product,iron loss reduction,and energy *** application of COMI technology in an enterprise is cost effective,involving the energy saving potential of 0.206 GJ/t,the cost of conserved energy of−48.83 yuan/GJ,and a simple payback period of 0.35 year for a 60-million-yuan *** analysis shows that the investment cost and discount rate primarily influence the cost of conserved energy of the *** the discount rate increased,the cost of conserved energy also gradually ***,the COMI technology is an energy-saving technology with good development prospects.

关键词： Converter steelmaking COMI technology Energy saving Techno-economic model Investment cost

宽行丛式甘蔗间作花生模式对作物植株养分吸收和土壤养分含量的影响

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

土壤通报 2024年第5期55卷 1337-1344页

作者：李忠吴海宁黄志鹏唐荣华唐秀梅贺梁琼钟瑞春韩柱强蒋菁广西作物遗传改良生物技术重点开放实验室广西南宁530007 广西农业科学院经济作物研究所广西南宁530004

【目的】研究宽行丛式甘蔗间作花生模式的作物养分吸收利用以及增产效应,为其推广应用提供科学依据。【方法】设置宽行丛式甘蔗间作花生(IS+IP处理)、单作甘蔗(MS处理)和单作花生(MP处理)3种栽培模式,通过测定作物植株和土壤养分含量以... 详细信息

【目的】研究宽行丛式甘蔗间作花生模式的作物养分吸收利用以及增产效应,为其推广应用提供科学依据。【方法】设置宽行丛式甘蔗间作花生(IS+IP处理)、单作甘蔗(MS处理)和单作花生(MP处理)3种栽培模式,通过测定作物植株和土壤养分含量以及作物农艺性状等指标,分析比较3种栽培模式作物产量、植株和土壤养分含量差异。【结果】与MS处理相比,IS+IP处理显著增加甘蔗栽培土壤养分含量,其中有效氮增加18.2%~20.1%,有效磷增加17.8%~35.1%,有机质含量增加12.2%~38.8%;IS+IP处理的甘蔗植株全氮、全磷和全钾含量总体呈现出在花生开花下针期增加,结荚期和成熟期降低的趋势。相比MP处理,在花生各生育期IS+IP处理除了明显降低花生栽培土壤速效钾含量(降幅24.2%~47.2%),植株全氮(降幅5.6%~31.3%)和全钾含量(降幅12.8%~26.6%)外,对其他花生栽培土壤和植株养分含量无一致性增加或降低的效应。IS+IP模式表现出明显的间作优势,LER(土地当量比)值达到1.41,IS+IP处理甘蔗产量达91731.24 kg hm^(−2),较MS处理显著增产、增产幅度达18.3%,花生产量达到1642.70 kg hm^(−2)。【结论】IS+IP模式显著增加甘蔗栽培土壤养分含量以及甘蔗产量,并增加一季花生产量,是一种高效种植模式。

关键词：甘蔗花生间作养分

Combination of High Yield Strength and Improved Ductility of 21Cr Lean Duplex Stainless Steel by Tailoring Cold Deformation and Low-Temperature Short-Term Aging

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2024年第4期37卷 695-702页

作者： Zhenghong Liu Zhigang Wu Ying han Xiaolei Song Guoqing Zu Weiwei zhu Xu Ran Key Laboratory of Advanced Structural Materials Ministry of EducationChangchun University of TechnologyChangchun130012China School of Materials Science and Engineering Changchun University of TechnologyChangchun130012China Jilin Province Key Laboratory of Advanced Materials Processing and Application for Rail Transit Changchun University of TechnologyChangchun130012China

Proper matching of cold-rolled deformation and low-temperature short-term aging can simultaneously enhance the strength and ductility of the lean duplex stainless steel. To investigate this, the microstructure evolution of cold-rolled and aging steels was observed by using scanning electron microscopy, transmission electron microscopy and electron backscattered diffraction. Additionally, the phase volume fraction was measured using X-ray diffraction. In this study, it was observed that the elongation of 21Cr lean duplex stainless steel significantly increased to 16.7% after undergoing moderate cold deformation (~ 40% reduction) and subsequent aging treatment at 550 ℃ for 30 min. Remarkably, the material still maintained a high yield strength of 1045 MPa. Such an excellent mechanical property was attributed to a unique microstructure combination of fine α'-martensite, twins, coarsened austenite resulting from partial martensite reverse transformation, and two-phase fine layered structure. The result of this study may open up new horizons for the alloy development in order to overcome the low ductility of cold-rolled high-strength lean duplex stainless steel.

关键词： Lean duplex stainless steel Cold rolling Aging Microstructure Mechanical properties Use our pre-submission checklist