检索结果-南通市图书馆

Simulation of the plasticizing behavior of composite modified doublebase(CMDB)propellant in grooved calendar based on adaptive grid technology

引用

Defence Technology（防务技术） 2021年第6期17卷 1954-1966页

作者： Su-wei Wang Xiu-duo Song Zong-kai Wu Lei Xiao Guang-pu Zhang Yu-bing Hu ga-zi Hao Wei Jiang Feng-qi Zhao National Special Superfine Powder Engineering Research Center of China School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing210094China Xi'an Modern Chemistry Research Institute Xi'an710065China

The frequent occurrence of safety accidents during the calendering process is caused by the flammable and explosive properties of composite modified double-base(CMDB)*** of process parameters with the aid of fluid simulation technology could effectively ensure the safety of the calendering *** improve the accuracy of the simulation results,material parameters and model structure were corrected based on actual conditions,and adaptive grid technology was applied in the local mesh *** addition,the rheological behavior,motion trajectories and heat transfer mechanisms of CMDB propellant slurry were studied with different gaps,rotational rates and temperatures of two *** results indicated that the refined mesh could significantly improve the contour clarity of boundaries and simulate the characteristics of CMDB propellant slurry reflux movement caused by the convergent flow near the *** with the gap,the increased rotational rate of roller could promote the reflux movement and intensify the shear flow of slurry inside the flow region by viscous shear ***,under the synergistic effect of contact heat transfer as well as convective heat exchange,heat accumulated near the outlet and diffused along the reflux movement,which led to the countercurrent heat dissipation behavior of CMDB propellant *** plasticizing mechanism of slurry and the safety of calendering under different conditions were explored,which provided theoretical guidance and reference data for the optimization of calendering process *** on the simulation results,the safety of the CMDB propellant calendering process could be significantly improved with a few tests conducted during a short research and development cycle.

关键词： Composite modified double base propellant Calendering process Fluid simulation Vortex flow0

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

Magnetic nanoparticles based cancer therapy: current status and applications

引用

Science China(Life Sciences) 2018年第4期61卷 400-414页

作者： Huan Zhang Xiao Li Liu Yi Fan Zhang Fei gao ga Long Li Yuan He Ming Li Peng Hai Ming Fan Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety National Center for Nanoscience and Technology

Nanotechnology holds a promising potential for developing biomedical nanoplatforms in cancer therapy. The magnetic nanoparticles, which integrate uniquely appealing features of magnetic manipulation, nanoscale heat generator, localized magnetic field and enzyme-mimics, prompt the development and application of magnetic nanoparticles-based cancer medicine. Considerable success has been achieved in improving the magnetic resonance imaging(MRI) sensitivity, and the therapeutic function of the magnetic nanoparticles should be given adequate attention. This work reviews the current status and applications of magnetic nanoparticles based cancer therapy. The advantages of magnetic nanoparticles that may contribute to improved therapeutics efficacy of clinic cancer treatment are highlighted here.

关键词： magnetic nanoparticles therapeutic delivery magnetic hyperthermia treatment theranostics

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

An Analysis on Researching Value on Tibetan Hidden Scriptures

引用

西藏大学学报（藏文版） 2012年第1期 139-149页

作者： Pakhar Gyal Kun - ga Yeshe The Library of Tibet University Lhasa Tibet 850000

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

Grounding the Human Body during Yoga Exercise with a Grounded Yoga Mat Reduces Blood Viscosity

引用

Open Journal of Preventive Medicine 2015年第4期5卷 159-168页

作者： Richard Brown gaétan Chevalier Human Physiology Department University of Oregon Eugene USA Developmental and Cell Biology Department University of California at Irvine Irvine USA

Objective: Research continues to show that being connected to the earth can increase the potential of the body to scavenge free radicals. This study examined the effect of just one hour of grounding on blood viscosity while subjects participated in gentle yoga exercises designed to initiate minor inflammation. Design: In this double blind model, twenty-eight (28) subjects met at the Bowerman Sports Medicine Clinic on the campus of the University of Oregon and were grounded to the earth via contact with a grounded yoga mat or were sham-grounded. Ten yoga exercises were repeated five times over a one-hour period. Blood was taken pre and post exercise and analyzed for blood viscosity using a scanning capillary viscometer. Results: Subjects connected to the earth significantly reduced their post exercise systolic blood viscosity (p = 0.03) and diastolic blood viscosity (p = 0.03). Conclusion: Grounding has the ability to affect exercise induced inflammation, thereby reducing blood viscosity.

关键词： Earthing Grounding Yoga Yoga Mats Blood Viscosity

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

Non-invasive evaluation of liver steatosis with imaging modalities:New techniques and applications

引用

World Journal of gastroenterology 2023年第17期29卷 2534-2550页

作者： Ke-Yu Zeng Wu-Yong-ga Bao Yun-Han Wang Min Liao Jie Yang Jia-Yan Huang Qiang Lu Department of Medical Ultrasound West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina

In the world,nonalcoholic fatty liver disease(NAFLD)accounts for majority of diffuse hepatic ***,substantial liver fat accumulation can trigger and accelerate hepatic fibrosis,thus contributing to disease ***,the presence of NAFLD not only puts adverse influences for liver but is also associated with an increased risk of type 2 diabetes and cardiovascular ***,early detection and quantified measurement of hepatic fat content are of great *** biopsy is currently the most accurate method for the evaluation of hepatic ***,liver biopsy has several limitations,namely,its invasiveness,sampling error,high cost and moderate intraobserver and interobserver ***,various quantitative imaging techniques have been developed for the diagnosis and quantified measurement of hepatic fat content,including ultrasound-or magnetic resonancebased *** quantitative imaging techniques can provide objective continuous metrics associated with liver fat content and be recorded for comparison when patients receive check-ups to evaluate changes in liver fat content,which is useful for longitudinal *** this review,we introduce several imaging techniques and describe their diagnostic performance for the diagnosis and quantified measurement of hepatic fat content.

关键词： Non-alcoholic fatty liver disease Hepatic steatosis Imaging techniques Quantitative evaluation Ultrasound Quantitative ultrasound

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

Comparison of Laparotomy and Laparoscopic Surgery for Ectopic Pregnancy at High Altitude

引用

Journal of Clinical and Nursing Research 2021年第1期5卷 57-59页

作者： Jiani Li ga Zhuo Tibet University Lhasa Tibet 860000China

In this paper,by comparing the clinical effects of laparotomy and laparoscopy on the recovery of ectopic pregnancy,70 patients with ectopic pregnancy in the people's Hospital of Tibet Autonomous region from April 2017 to April 2019 were selected as the control group who received laparotomy.35 patients in each group were treated by laparoscopy to compare the recovery of the two *** solve the problem of which method of operation for ectopic pregnancy in plateau area is better,and to promote the operation for better recovery of patients in the future.

关键词： Laparoscopy Laparotomy Ectopic pregnancy

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

Management of skin toxicities during panitumumab treatment in metastatic colorectal cancer

引用

World Journal of gastroenterology 2019年第29期25卷 4007-4018页

作者： Olivier Bouche Meher Ben Abdelghani Jean-Luc Labourey Simon Triby René-Jean Bensadoun Thomas Jouary gaétan Des Guetz Department of gastroenterology and Digestive Oncology Hopital Robert Debre CHU ReimsReims 51000France Oncology Department Centre Paul StraussStrasbourg 67000France Oncology Department Centre HospitalierCarcassonne 11000France Medical Department AMGEN FranceBoulogne-Billancourt 92100France Radiation Oncology Centre de Haute EnergieNice 06000France Dermatology Department Hopital Saint-Andre CHU de BordeauxBordeaux 33000France Oncology Department Avicenne HospitalBobigny 93000France

BACKGROUND Anti-epidermal growth factor receptor therapy is associated with skin adverse events not previously reported with conventional chemotherapy. Prophylactic actions are recommended, but routine clinical management of these toxicities and their impact on quality of life remain unknown. AIM To assess the dermatological toxicities reported after panitumumab initiation, their impact on the quality of life and the clinical practices for their management. METHODS Patients included in this prospective multicenter observational study were over 18 years of age and began treatment with panitumumab for wild-type KRAS metastatic colorectal cancer. The incidence of dermatological toxicities, clinical practices for their management and impact on quality of life were recorded during a 6-mo follow-up. RESULTS Overall, 229 patients (males, 57.6%;mean age, 66.2 years) were included. At day 15, 59.3% of patients had dermatological toxicity;the rate peaked at month 2 (74.7%) and decreased at month 6 (46.5%). The most frequent dermatological toxicities were rash/acneiform rash, xerosis and skin cracks. At least one preventive treatment was administered to 65.9% of patients (oral antibiotics, 84.1%;emollients, 75.5%;both, 62.9%). The rates of patients who received at least one curative treatment peaked at month 2 (63.4%) and decreased at month 6 (44.8%). The impact of the dermatological toxicities on quality of life was limited as assessed with Dermatology Life Quality Index scores and inconvenience visual analogic scale score. The rates of topical corticosteroids administration and visits to specialists were low. CONCLUSION The rates of the different skin toxicities peaked at various times and were improved at the end of follow-up. Nevertheless, their clinical management could be optimized with a better adherence to current recommendations. The impact of skin toxicities on patient’s quality of life appeared to be limited.

关键词： Metastatic colorectal cancer Epidermal growth factor receptor inhibitors Panitumumab Skin toxicity Quality of life

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

Electric Anisotropy and Two－dimensional Energy Band of Undoped and Heavily Doped Polyacetylene

引用

Chemical Research in Chinese Universities 1995年第3期11卷 228-231页

作者： Huang, Zong-hao Wang, Xiu-jun Tong, La-ga Li, Bai-tao Wang, Rong-shun Bei, Yong-ping

ased on the known crystal data , we used the EHMACC(EHMO/CO) methodto calculate the twotlimensional energy band of both undoped and heavily iodine-doped polyacetylene (PA). The results show that (1 ) I-doping obviously reducesthe niagnitudes of Eg , Egi; (2) in the conducting process along the direction per-pendicular to PA chain , the P-type AO of iodine plays a very important role, i- e. ,the conducting bridge to transport the charge between the two neighbor PA chains.I-doping reniarkably increases σ_T value while the conducting process will reduce theratio magnitude of σ/σ. Therefore, heavily I-doping makes PA change fromsimeconductor to conductor which obviously has 2-D conductive ability.

关键词： Conductive polymer 2-D energy band Electric anisotropy

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

Study of nano-nitramine explosives:preparation,sensitivity and application

引用

Defence Technology（防务技术） 2014年第2期10卷 184-189页

作者： Jie LIU Wei JIANG Qing YANG Jian SONG ga-zi HAO Feng-sheng LI National Special Superfine Powder Engineering Research Center of China Nanjing University of Science and Technology

Nano-nitramine explosives(***-20) are produced on a bi-directional grinding *** scanning electron microscope(SEM)observations show that the prepared particles are semi-spherical,and the narrow size distributions are characterized using the laser particle size *** with the micron-sized samples,the nano-products show obvious decrease in friction and impact *** the case of shock sensitivities,nano-products have lower values by 59.9%(RDX),56.4%(HMX),and 58.1%(CL-20),*** nano-RDX and nano-HMX are used in plastic bonded explosives(PBX) as alternative materials of micron-sized particles,their shock sensitivities are significantly decreased by 24.5%(RDX) and 22.9%(HMX),and their detonation velocities are increased by about 1.7%.Therefore,it is expected to promote the application of nano-nitramine explosives in PBXs and composite modified double-based propellants(CMDBs) so that some of their properties would be improved.

关键词：纳米产品硝胺炸药应用程序灵敏度扫描电子显微镜激光粒度分析仪改性双基推进剂 CL-20

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

Pancreatic pseudocyst:The past,the present,and the future

引用

World Journal of gastrointestinal Surgery 2024年第7期16卷 1986-2002页

作者： Jonathan ga Koo Matthias Yi Quan Liau Igor A Kryvoruchko Tamer AAM Habeeb Christopher Chia Vishal G Shelat Department of General Surgery Khoo Teck Puat HospitalSingapore 768828Singapore Lee Kong Chian School of Medicine Nanyang Technological UniversitySingapore 308232Singapore Department of Surgery No.2 Kharkiv National Medical UniversityKharkiv 61022Ukraine Department of General Surgery Faculty of Medicine Zagazig UniversitySharkia 44511Egypt Department of gastroenterology Woodlands General HospitalSingapore 737628Singapore Department of General Surgery Tan Tock Seng HospitalSingapore 308433Singapore

A pancreatic pseudocyst is defined as an encapsulated fluid collection with a welldefined inflammatory wall with minimal or no *** diagnosis cannot be made prior to 4 wk after the onset of *** clinical presentation is often nonspecific,with abdominal pain being the most common *** a diagnosis is suspected,contrast-enhanced computed tomography and/or magnetic resonance imaging are performed to confirm the diagnosis and assess the characteristics of the *** ultrasound with cyst fluid analysis can be performed in cases of diagnostic *** of the pancreas can lead to complications such as hemorrhage,infection,and *** management of pancreatic pseudocysts depends on the presence of symptoms and the development of complications,such as biliary or gastric outlet *** options include endoscopic or surgical *** aim of this review was to summarize the current literature on pancreatic pseudocysts and discuss the evolution of the definitions,diagnosis,and management of this condition.

关键词： Pancreatic pseudocyst Pancreatic fluid collection Cystic pancreatic lesions Pancreatitis Endoscopic ultrasound

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

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

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

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：