检索结果-南通市图书馆

Final results of the first phase of the PROTO-SPHERA experiment: obtainment of the full current stable screw pinch and first evidences of the jet + torus combined plasma configuration

引用

Plasma Science and Technology 2024年第2期26卷 31-43页

作者： Paolo MICOZZI Franco ALLADIO ale.sandro MANCUSO Vincenzo ZANZA Gerarda APRUZZESE Francesca BOMBARDA Luca BONCAGNI Paolo BURATTI Francesco FILIPPI Giuseppe GALATOLA TEKA Francesco GIAMMANCO Edmondo GIOVANNOZZI Andrea GROSSO Matteo IAFRATI ale.sandro LAMPASI Violeta LAZIC Simone MAGAGNINO Simone MANNORI Paolo MARSILI Valerio PIERGOTTI Giuliano ROCCHI ale.sandro sibio Benedetto TILIA Onofrio TUDISCO FSN Dipartimento Fusione e tecnologie per la Sicurezza Nucleare ENEA Agenzia Nazionale per Le Nuove Tecnologie Energia e lo Sviluppo Economico SostenibileFrascati(Rome)00044Italy IAPS Istituto di Astrofisica e Planetologia Spaziali INAF Istituto Nazionale di AstrofisicaRome O133Italy Physics Department University of Pisa Faculty of Natural Sciences Mathematics and PhysicsPisa 56127 Italy

In astrophysics, the boundary conditions for plasma phenomena are provided by nature and the astronomer faces the problem of understanding them from a variety of observations [Hester J J et al 1996 Astrophys. J. 456 225], on the other hand, in laboratory plasma experiments the electromagnetic boundary conditions become a major problem in the set-up of the machine that produces the plasma, an issue that has to be investigated step by step and to be modified and adapted with great patience, in particular in the case of an innovative plasma confinement experiment. The PROTO-SPHERA machine [Alladio F et al 2006 Nucl. Fusion 46 S613] is a magnetic confinement experiment, that emulates in the laboratory the jet + torus plasma configurations often observed in astrophysics: an inner magnetized jet of plasma centered on the(approximate) axis of symmetry and surrounded by a magnetized plasma torus orthogonal to this jet. The PROTO-SPHERA plasma is simply connected, i.e., no metal current conducting rod is linked to the plasma torus, while instead it is the inner magnetized plasma jet(in the following always called the plasma centerpost) that is linked to the torus. It is mandatory that no spurious plasma current path modifies the optimal shape of the plasma centerpost. Moreover, as the plasma torus is produced and sustained, in absence of any applied inductive electric field, by the inner plasma centerpost through magnetic reconnections [Taylor J B and Turner M F 1989 *** 29 219], it is required as well that spurious current paths do not surround the torus on its outboard, in order not to lower the efficiency of the magnetic reconnections that maintain the plasma torus at the expense of the plasma centerpost. Boundary conditions have been corrected,up to the point that the first sustainment in steady state has been achieved for the combined plasma.

关键词： laboratory plasmas magnetic confinement astrophysical plasmas

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Benefits of minimally invasive surgery in the treatment of gastric cancer

引用

World Journal of Gastroenterology 2022年第30期28卷 4227-4230页

作者： Simone sibio Francesca La Rovere Sara Di Carlo Department of Surgery P.Valdoni Unit of Oncologic and Minimally Invasive SurgerySapienza University of RomeUmberto I University HospitalRome 00161Italy Minimally Invasive Surgery Unit Department of SurgeryTor Vergata UniversityRome 00133Italy

We read with great interest the article that retrospectively analyzed 814 patients with primary gastric cancer,who underwent minimally invasive R0 gastrectomy between 2009 and 2014 by grouping them in laparoscopic vs robotic *** results of the study highlighted that age,American Society of Anesthesiologists status,gastrectomy type and pathological T and N status were the main prognostic factors of minimally invasive gastrectomy and showed how the robotic approach may improve long-term outcomes of advanced gastric *** to most of the current literature,robotic surgery is associated with a statistically longer operating time when compared to open and laparoscopic surgery;however,looking at the adequacy of resection,defined by negative surgical margins and number of lymph nodes removed,it seems that robotic surgery gives better results in terms of the 5-year overall survival and recurrencefree *** robotic approach to gastric cancer surgery aims to overcome the difficulties and technical limitations of laparoscopy in major *** threedimensional vision,articulation of the instruments and good ergonomics for the surgeon allow for accurate and precise movements which facilitate the complex steps of surgery such as lymph node dissection,esophagus-jejunal anastomosis packaging and reproducing the technical accuracy of open *** the literature,as well as the analyzed study,offers us countless data regarding the short-term oncological results of robotic surgery in the treatment of gastric cancer,satisfactory data on long-term follow-up are lacking,so future studies are necessary.

关键词： Gastric cancer Robotic gastrectomy Laparoscopy D2 lymphadenectomy Long-term outcomes Morbidity

来源：

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

Current highlights on solid pseudopapillary neoplasm of the pancreas

引用

World Journal of Hepatology 2022年第1期14卷 300-303页

作者： Simone sibio Sara Di Carlo Department of Surgery Pietro Valdoni Sapienza University of RomeUmberto I HospitalRome 00161Italy Minimally Invasive Surgery Unit Tor Vergata HospitalTor Vergata University of RomeRome 00133Italy

Solid pseudopapillary neoplasm of the pancreas is a low-grade malignant tumor that predominantly affects young women in their third and fourth *** and risk factors are *** symptoms are aspecific and most commonly due to mass *** is made by computed tomography scan or magnetic resonance imaging and histological characterization is obtained by endoscopic ultrasound-guided fine needle ***,these lesions are composed by both solid and pseudopapillary structures with necrotic and hemorrhagic ***,the biological behavior is aggressive with tumor recurrence and distant ***,curative R0 surgical resection is the best option able to provide long term survival even in advanced *** disease is the main predictor of poor *** and radiotherapy regimens are not well ***,they could be effective in reducing tumor size as neoadjuvant treatment or disease control in palliative *** complete surgical resection provides a cure rate of>95%,considering young age of the patients and morbidity associated to pancreatic surgery,further studies are needed to better investigate risk factors and responsiveness to hormones in order to allow early diagnosis and follow up strategies that could avoid unnecessary surgery in less aggressive disease.

关键词： Pseudopapillary neoplasm Pancreatic tumor Pancreaticoduodenectomy Distal pancreatectomy Pancreas Surgery

来源：

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

Complete mesocolic excision and central vascular ligation in colorectal cancer in the era of minimally invasive surgery

引用

World Journal of Clinical Cases 2021年第25期9卷 7297-7305页

作者： Marzia Franceschilli Sara Di Carlo Danilo Vinci Bruno Sensi Leandro Siragusa Vittoria Bellato Roberto Caronna Piero Rossi Giuseppe Cavallaro Andrea Guida Simone sibio Department of Surgery Minimally Invasive UnitTor Vergata University of RomeRome 00133Italy Department of Surgical Sciences Unit of Pancreatic and Biliary SurgerySapienza University of RomeRome 00161Italy Department of Surgery P Valdoni Unit of Oncologic and Minimally Invasive SurgerySapienza University of RomeRome 00161Italy

Since the 19th century,appropriate lymphadenectomy has been considered a cornerstone of oncologic surgery and one of the most important prognostic *** approach can be applied to any surgery for gastrointestinal *** surgery for colon and rectal cancer,an adequate portion of the mesentery is removed together with the segment of bowel affected by the *** adequate number of lymph nodes to be removed is standardized and reported by several *** is mandatory to determine the appropriate extent of lymphadenectomy and to balance its oncological benefits with the increased morbidity associated with its execution in cancer *** review focuses on the concept of“complete mesenteric excision(CME)with central vascular ligation(CVL),”a radical lymphadenectomy for colorectal cancer that has gained increasing interest in recent *** aim of this study was to evaluate the evolution of this approach over the years,its potential oncologic benefits and potential risks,and the improvements offered by laparoscopic *** advantages of CME are improved local-relapse rates due to complete removal of the intact mesocolic fascia and improved distance recurrence rates due to ligation of vessels at their origin(CVL)which guarantees removal of a larger number of lymph *** development and worldwide diffusion of laparoscopic techniques minimized postoperative trauma in oncologic surgery,providing the same oncologic results as open *** has been widely applied to colorectal cancer surgery;however,CME entails a technical complexity that can limit its wide minimally-invasive application. This review analyzesresults of these procedures in terms of oncological outcomes, technical feasibilityand complexity, especially within the context of minimally invasive surgery.

关键词： Complete mesenteric excision Central vascular ligation Colorectal cancer Lymphadenectomy Laparoscopy Minimally invasive surgery

来源：

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

Triiodothyronine and breast cancer

引用

World Journal of Clinical Oncology 2014年第3期5卷 503-508页

作者： Maria Teresa De sibio Miriane de Oliveira Fernanda Cristina Fontes Moretto Regiane Marques Castro Olimpio sandro José Conde Aline Carbonera Luvizon Célia Regina Nogueira Department of Internal Medicine Botucatu Medical SchoolUniv Estadual PaulistaUNESPBotucatuSP 18618-970Brazil Department of Pathology Botucatu Medical School Univ Estadual Paulista-UNESP Botucatu SP 18618-970Brazil

The thyroid hormones(THs), triiodothyronine(T3) and thyroxine(T4), are essential for survival; they are involved in the processes of development, growth, and metabolism. In addition to hyperthyroidism or hypothyroidism, THs are involved in other diseases. The role of THs in the development and differentiation of mammary epithelium is well established; however, their specific role in the pathogenesis of breast cancer(BC) is controversial. Steroid hormones affect many human cancers and the abnormal responsiveness of the mammary epithelial cells to estradiol(E2) in particular is known to be an important cause for the development and progression of BC. The proliferative effect of T3 has been demonstrated in various types of cancer. In BC cell lines, T3 may foster the conditions for tumor proliferation and increase the effect of cell proliferation by E2; thus, T3 may play a role in the developmentand progression of BC. Studies show that T3 has effects similar to E2 in BC cell lines. Despite controversy regarding the relationship between thyroid disturbances and the incidence of BC, studies show that thyroid status may influence the development of tumor, proliferation and metastasis.

关键词： Thyroid hormone Triiodothyronine Breast cancer Mammary gland and metabolism

来源：

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

Detection methods and clinical significance of free peritoneal tumor cells found during colorectal cancer surgery

引用

World Journal of Gastrointestinal Surgery 2015年第9期7卷 178-184页

作者： Simone sibio Cristina Fiorani Carmine Stolfi Andrea Divizia Roberto Pezzuto Fabrizio Montagnese Giulia Bagaglini Paolo Sammartino Giuseppe Sigismondo Sica Department of Surgery Pietro Valdoni Sapienza University of Rome Department of Surgical Science Tor Vergata University of Rome

Peritoneal washing is now part of the standard clinical practice in several abdominal and pelvic neoplasias. However, in colorectal cancer surgery, intra-peritoneal free cancer cells(IFCC) presence is not routinely investigated and their prognostic meaning is still unclear. When peritoneal washing results are positive for the presence of IFCC a worse outcome is usually expected in these colorectal cancer operated patients, but it what is not clear is whether it is associated with an increased risk of local recurrence. It is authors' belief that one of the main reasons why IFCC are not researched as integral part of the routine staging system for colon cancer is that there still isn't a diagnostic or detection method with enough sensibility and specificity. However, the potential clinical implications of a routine research for the presence IFCC in colon neoplasias are enormous: not only to obtain a more accurate clinical staging but also to offer different therapy protocols, based on the presence of IFCC. Based on this, adjuvant chemotherapy could be offered to those patients found to be positive for IFCC; also, protocols of proactive intraperitoneal chemotherapy could be applied. Although presence of IFCC appears to have a valid prognostic significance, further studies are needed to standardize detection and examination procedures, to determine if there are and which are the stages more likely to benefit from routine search for IFCC.

关键词： Colorectal cancer Cytology Free cancer cells Perit

来源：

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

The Protosphera Experiment and the PROTO-PINCH Testbench

引用

中国核科技报告 1999年第S4期 392-393页

作者： F.Alladio,L.A.Grosso,A.Mancuso,S.Mantovani,P.Micozzi,M.Pillon,A.sibio,B.Tilia CR Frascati C.P.65 00044 Frascati(Rome) Italy Associazione Euratom-ENEA sulla Fusione CR Frascati C.P.65 00044 Frascati(Rome) Italy Associazione Euratom-ENEA sulla Fusione CR Frascati C.P.65 00044 Frascati(Rome) Associazione Euratom-ENEA sulla Fusione Italy Associazione Euratom-ENEA sulla Fusione CR Frascati C.P.65 00044 Frascati(Rome) Italy Associazione Euratom-ENEA sulla Fusione CR Frascati C.P.65 00044 Frascati(Rome) Italy Associazione Euratom-ENEA sulla Fusione CR Frascati CR Frascati C.P.65 00044 Frascati(Rome) Italy C.P.65 00044 Frascati(Rome) Italy Associazione Euratom-ENEA sulla Fusione CR Frascati C.P.65 00044 Frascati(Rome) Italy Associazione Euratom-ENEA sulla Fusione

Spherical Tori A=R/α<2 were originally proposed by M. Peng and his collaborators at ORNL. They are based on economical (low aspect ratio=low volume=low cost) and physical (probable no disruptions, low geodesic curvat... 详细信息

关键词： The Protosphera Experiment and the PROTO-PINCH Testbench

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：