检索结果-南通市图书馆

Bisphosphonate use and gastrointestinal tract cancer risk:Meta-analysis of observational studies

World Journal of Gastroenterology 2012年第40期18卷 5779-5788页

作者： Yun Hwan Oh Chan yoon Sang Min Park Department of Family Medicine Seoul National University HospitalSeoul National University College of MedicineSeoul 110-774South Korea Seoul National University Hospital Seoul National University College of MedicineSeoul 110-774South Korea

AIM:To perform a meta-analysis of observational studies to further elucidate the relationship between oral bisphosphonate use and gastrointestinal cancer ***:Systematic literature search was conducted in MEDLINE,EMBASE,and the Cochrane Library to identify studies through January *** terms were "bisphosphonates" or trade names of the drugs,and "observational studies" or "cohort studies" or "case-control studies".Two evaluators reviewed and selected articles on the basis of predetermined selection criteria as followed:(1) observational studies(casecontrol or cohort studies) on bisphosphonate use;(2) with at least 2 years of follow-up;and(3) reported data on the incidence of cancer *** DerSimonian and Laird random effects model were used to calculate the pooled relative risk(RR) with 95% confidence interval(CI).Two-by-two contingency table was used to calculate the outcomes not suitable for *** meta-analyses were conducted for the type of cancer(esophageal,gastric and colorectal cancers).Sensitivity analyses were performed to examine the effect sizes when only studies with long-term follow-up(mean 5 years;subgroup 3 years) were ***:Of 740 screened articles,3 cohort studies and 3 case-control studies were included in the *** first,4 cohort studies and 3 case-control studies were selected for the analyses but one cohort study was excluded because the cancer outcomes were not categorized by type of gastrointestinal *** than 124 686 subjects participated in the 3 cohort *** mean follow-up time in all of the cohort studies combined was approximately 3.88 *** 3 casecontrol studies reported 3070 esophageal cancer cases and 15 417 controls,2018 gastric cancer cases and 10 007 controls,and 11 574 colorectal cancer cases and 53 955 *** percentage of study participants who used bisphosphonate was 2.8% among the cases and 2.9% among the *** meta-analysis of all the studies fo

关键词： Bisphosphonate Gastrointestinal tract can-cer Esophageal cancer Gastric cancer Colorectal can-cer Meta-analysis

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

Stroke Based Painterly Rendering with Mass Data through Auto Warping Generation

引用

Computer Modeling in Engineering & Sciences 2022年第3期130卷 1441-1457页

作者： Taemin Lee Beomsik Kim Sanghyun Seo Kyunghyun yoon Davinci SW Education Institute Chung-Ang UniversitySeoul06974South Korea School of Computer Science and Engineering Chung-Ang UniversitySeoul06974South Korea College of Art&Technology Chung-Ang UniversityGyeonggi-do17546South Korea

Painting is done according to the artist’s *** most representative of the style is the texture and shape of the brush *** simulations allow the artist’s painting to be produced by taking this stroke and pasting it onto the *** is called stroke-based *** quality of the result depends on the number or quality of this stroke,since the stroke is taken to create the *** is not easy to render using a large amount of information,as there is a limit to having a stroke *** this work,we intend to produce rendering results using mass data that produces large amounts of strokes by expanding existing strokes through *** this,we have produced results that have higher quality than conventional ***,we also compare the correlation between the amount of data and the results.

关键词： Painterly rendering stroke based rendering image mass data stroke warping non-photorealistic rendering

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

Energy efficient mechanism using flexible medium access control protocol for hybrid wireless sensor networks

引用

Journal of Central South University 2013年第8期20卷 2165-2174页

作者： SUN Ning JEONG yoon-su LEE Sang-ho Department of Computer Science Chungbuk National University Department of Information Communication Engineering Mokwon University

Energy efficiency is a primary consideration in a wireless sensor network (WSN). This is also a major parameter when designing a medium access control (MAC) protocol for WSNs. Hierarchical clustering structure is regarded suitable for WSNs due to its good performance in energy conservation. In this work, an adequately flexible mechanism for clustering WSNs is designed, in which some creative or promotional metrics are utilized, such as cluster head selection algorithm, cluster optional reconstruction, interested data transmission, multiple path routing protocol. All these strategies were cooperated to maximize energy saving of whole system. An appropriate MAC protocol for this mechanism is proposed, by flexibly switching the status of diverse sensor nodes in different strategies. The simulation results show that the proposed MAC protocol is suitable for clustering WSNs and performs well in aspects of energy efficiency, flexibility and scalability.

关键词： MAC protocol energy conservation flexibility re-clustering wireless sensor network

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

Thermal deformation of aluminum alloy casting materials for tire mold by numerical analysis

引用

中国有色金属学会会刊：英文版 2012年第S3期22卷 859-863页

作者： Hee-Sung yoon Je-Se CHOI Yool-Kwon OH Department of Advanced Parts and Materials Engineering Chosun University Department of Mechatronics Engineering Chosun University

Thermal deformation of aluminum alloy casting materials for manufacturing the tire mold was numerically *** AC7A and AC4C casting material was selected as casting material and the metal casting device was used in order to manufacture the mold product of automobile tire in the actual industrial *** temperature distribution and the cooling time of casting materials were numerically calculated by finite element analysis (FEA).Also,the thermal deformation such as displacement and stress distribution was calculated from the temperature *** thermal deformation was closely related to the temperature difference between the surface and inside of the *** numerical analysis results reveal that the thermal deformation of AC7A casting material is higher than that of AC4C casting ***,the thermal deformation results at the central part are larger than that on the side of casting because of the shrinkage caused by the cooling speed difference.

关键词： thermal deformation finite element analysis AC7A casting material AC4C casting material

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

PI3K/Akt/mTOR inhibitors in breast cancer

引用

Cancer Biology & Medicine 2015年第4期12卷 342-354页

作者： Joycelyn JX Lee Kiley Loh yoon-Sim Yap Department of Medical Oncology National Cancer Center Singapore

Activation of the phosphoinositide 3 kinase(PI3K)/Akt/mammalian target of rapamycin(mTOR) pathway is common in breast cancer. There is preclinical data to support inhibition of the pathway, and phase Ⅰ to Ⅲ trials involving inhibitors of the pathway have been or are being conducted in solid tumors and breast cancer. Everolimus, an mTOR inhibitor, is currently approved for the treatment of hormone receptor(HR)-positive, human epidermal growth factor receptor 2(HER2)-negative breast cancer. In this review, we summarise the efficacy and toxicity findings from the randomised clinical trials, with simplified guidelines on the management of potential adverse effects. Education of healthcare professionals and patients is critical for safety and compliance. While there is some clinical evidence of activity of mTOR inhibition in HR-positive and HER2-positive breast cancers, the benefits may be more pronounced in selected subsets rather than in the overall population. Further development of predictive biomarkers will be useful in the selection of patients who will benefit from inhibition of the PI3K/Akt/mTOR(PAM) pathway.

关键词： Breast cancer phosphoinositide 3 kinase(PI3K)/Akt/ mammalian target of rapamycin(mTOR) everolimus

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

Challenges and opportunities for using formate to store, transport, and use hydrogen

引用

Journal of Energy Chemistry 2020年第2期29卷 216-224页

作者： Katarzyna Grubel Hyangsoo Jeong Chang Won yoon Tom Autrey Pacific Northwest National Laboratory 902 Battelle Boulevard.P.O.Box 999.Richland.WA 99352.United States Center for Hydrogen and Fuel Cell Research Korea Institute of Science and Technology(KIST).5 Hwarang-ro 14-gil.Seongbuk-gu.Seoul 02792Republic of Korea Divison of Energy and Environment Technology KIST SchoolKorea University of Science and Technology5 Hwarung-ro 14-gil.Seongbuk-guSeoul 02792.Republic of Korea KHU-KIST Department of Converging Science and Technology Kyung Hee University26 Kyungheedae-ro.Dongdaemun-guSeoul 02447Republic of Korea

In this perspective article,the synthesis and thermodynamic properties of aqueous solutions of formate salts(FS,HCO2-)are described in relationship to the concept of *** physiochemical properties of solid FS,aqueous formate solutions,and aqueous bicarbonate solutions set the limitations for storage capacity,deliverable capacity,and usable H2capacity of these H2carriers,*** parameters will help in the design of systems that use H2carriers for storage and transport of H2for fuel cell power ***,as well as admixtures with formic acid(FA,H2CO2),have potential to address the goals outlined in the *** of Energy’s H2@scale initiative to store in chemical bonds a significant quantity of energy(hundreds of megawatts)obtained from large scale renewable resources.

关键词： Hydrogen carriers Formate salts Bicarbonate salts Thermodynamics

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

Modification strategies improving the electrochemical and structural stability of high-Ni cathode materials

引用

Journal of Energy Chemistry 2024年第9期96卷 185-205页

作者： yoon Bo Sim Hami Lee Junyoung Mun Ki Jae Kim Department of Energy Science Sungkyunkwan UniversitySuwon 16419Republic of Korea School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwon 16419Republic of Korea

With the increasing spotlight in electric vehicles,there is a growing demand for high-energy-density batteries to enhance driving ***,several studies have been conducted on high-energy-density LiNi_(x)Co_(y)Mn_(z)O_(2)***,there is a limit to permanent performance deterioration because of side reactions caused by moisture in the atmosphere and continuous microcracks during cycling as the Ni content to express high energy increases and the content of Mn and Co that maintain structural and electrochemical stabilization *** direct modification of the surface and bulk regions aims to enhance the capacity and long-term performance of high-Ni cathode ***,an efficient modification requires a study based on a thorough understanding of the degradation mechanisms in the surface and bulk *** this review,a comprehensive analysis of various modifications,including doping,coating,concentration gradient,and single crystals,is conducted to solve degradation issues along with an analysis of the overall degradation mechanism occurring in high-Ni cathode *** also summarizes recent research developments related to the following modifications,aims to provide notable points and directions for post-studies,and provides valuable references for the commercialization of stable high-energy-density cathode materials.

关键词： High energy density High-Ni cathode materials Degradation Structural stability Lithium-ion battery

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

Synaptic a-Si:H/a-Ga_(2)O_(3) phototransistor inspired by the phototaxis behavior of organisms with all-optical and all-electrical stimulation modes

引用

Nano Research 2024年第8期17卷 7631-7642页

作者： Youngbin yoon Youngki Kim Soowon Choi Jungdae Kwon Myunghun Shin School of Electronics and Information Engineering Korea Aerospace UniversityGoyang10540Republic of Korea Nano Materials Division Korea Institute of Materials ScienceChangwon 51508Republic of Korea Department of Materials Science and Engineering Pusan National UniversityBusan 46241Republic of Korea

To improve neuromorphic computing performance,neuromorphic system components should mimic the behaviors of organic *** this study,a synaptic a-Si:H/a-Ga_(2)O_(3)phototransistor featuring all-optical and-electrical emulation is fabricated in a manner advantageous for complementary metal-oxide-semiconductor process *** phototransistor exhibits excitatory and inhibitory synaptic behaviors under stimulation by both optical and electrical *** mimics several essential synaptic functions,including excitatory postsynaptic current,inhibitory postsynaptic current,short-term memory,long-term memory,pairedpulse facilitation,and spike-timing-dependent *** optical and electrical modulation mechanisms are confirmed to arise from the a-Si:H/a-Ga_(2)O_(3) heterojunction structure and interface effects,and the device is shown to operate at low power in both optical and electrical *** all-optical weight modulation function is applied to the wavelength-differential behavior response of zebrafish,successfully mimicking the color perception process of the ***,to verify the translation of the optoelectrical-derived synaptic behaviors of the phototransistor into artificial neuromorphic computation,handwritten digit image recognition of the Modified National Institute of Standards and Technology dataset is performed by a convolutional neural network,with a demonstrated average learning accuracy of 98.46%.These findings verify the applicability of the synaptic a-Si:H/a-Ga_(2)O_(3) phototransistor in neuromorphic computing.

关键词： synaptic phototransistor artificial synapse phototaxis neuromorphic computing interface charge state optoelectronic synaptic device

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

Introducing MagBERT:A language model for magnesium textual data mining and analysis

引用

Journal of Magnesium and Alloys 2024年第8期12卷 3216-3228页

作者： Surjeet Kumar Russlan Jaafreh Nirpendra Singh Kotiba Hamad Dae Ho yoon School of Advanced Materials Science&Engineering Sungkyunkwan University Suwon 16419South Korea Department of Physics Khalifa University of Science and TechnologyAbu Dhabi 127788UAE

Magnesium(Mg)based materials hold immense potential for various applications due to their lightweight and high strength-to-weight ***,to fully harness the potential of Mg alloys,structured analytics are essential to gain valuable insights from centuries of accumulated *** information extraction from the vast corpus of scientific literature is crucial for this *** this work,we introduce MagBERT,a BERT-based language model specifically trained for Mg-based *** a dataset of approximately 370,000 abstracts focused on Mg and its alloys,MagBERT is designed to understand the intricate details and specialized terminology of this *** rigorous evaluation,we demonstrate the effectiveness of MagBERT for information extraction using a fine-tuned named entity recognition(NER)model,named *** NER model can extract mechanical,microstructural,and processing properties related to Mg *** instance,we have created an Mg alloy dataset that includes properties such as ductility,yield strength,and ultimate tensile strength(UTS),along with standard alloy *** introduction of MagBERT is a novel advancement in the development of Mg-specific language models,marking a significant milestone in the discovery of Mg alloys and textual information *** making the pre-trained weights of MagBERT publicly accessible,we aim to accelerate research and innovation in the field of Mg-based materials through efficient information extraction and knowledge discovery.

关键词： Mg alloys MagBERT BERT NLP Text mining Information extraction

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

Effects of land use change and water reuse options on urban water cycle

引用

Journal of Environmental Sciences 2010年第6期22卷 923-928页

作者： Jiho Lee Gijung Pak Chulsang Yoo Sangdan Kim Jaeyoung yoon School of Civil Environmentaland Architectural EngineeringKorea University Department of Environmental Engineering Korea University Department of Environmental System Engineering Pukyong National University

The aim of this article was to study the effects of land use change and water reuse options on an urban water cycle. A water cycle analysis was performed on the Goonja drainage basin, located in metropolitan Seoul, using the Aquacycle model. The chronological effects of urbanization were first assessed for the land uses of the Goonja drainage basin from 1975 to 2005, where the ratio of impervious areas ranged from 43% to 84%. Progressive urbanization was identified as leading to a decrease in evapotranspiration （29%）, an increase in surface runoff （41%） and a decrease in groundwater recharge （74%）, indicating a serious distortion of the water cycle. From a subsequent analysis of the water reuse options, such as rainwater use and wastewater reuse, it is concluded that wastewater reuse seemed to have an advantage over rainwater use for providing a consistent water supply throughout the year for a country like Korea. where the rainy season is concentrated during the summer monsoon.

关键词： Aquacycle model land use change water reuse

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

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：