检索结果-南通市图书馆

Effect of carbon solution-loss reaction on properties of coke in blast furnace

Journal of Iron and Steel Research International 2020年第5期27卷 489-499页

作者： Qi-hang Liu Shuang-ping Yang Chen Wang yi-long Ji School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710055ShaanxiChina Metallurgical Engineering Technology Research Center of Shaanxi Province Xi’an 710055ShaanxiChina Anhui Province Key Laboratory of Metallurgical Engineering and Resources Recycling Anhui University of TechnologyMa’anshan 243002AnhuiChina

The pore structure of coke under CO2 atmosphere was investigated by the carbon solution-loss reaction *** results show that the pore size distribution of coke gradually changes from dispersion to relative concentration with the increase in carbon loss rate,but it tends to be dispersed again in the late stage of the reaction,and the pore volume and specific surface area also increase first and then decrease with the increase in carbon loss *** electron microscopy results show that the evolution of coke pores is from the formation of micropores to the expansion of micropores,and finally the micropore and mesopores collapse to form a large number of string *** chemical bonds and functional groups of different reacted cokes were analyzed by Fourier-transform infrared ***,the microstructure of reacted cokes was analyzed by optical microscopy,and then the ordering of the affinity of different microstructures with CO2 was *** volume hypothesis which was the theory about energy size of comminution was adopted to analyze the degradation behavior of reacted *** breakage energy of reacted cokes was calculated by volume hypothesis,and the power consumption coefficient CK of different reacted cokes was determined by drum experiment,and then the degradation behavior of reacted cokes under different power consumptions was predicted.

关键词： Coke property Carbon solution-loss reaction Coke degradation Coke pore Volume hypothesis Breakage energy

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

On the Volume Formulas of Cones and Orthogonal Multi-cones in S^n(1) and H^n(-1)

引用

Chinese Annals of Mathematics,Series B 2006年第1期27卷 1-30页

作者： wu-yi HSIANG Dedicated to the memory of Shiing-Shen Chern Department of Mathematics The Hong Kong University of Science ＆ Technology Hong Kong China School of Mathematical Sciences Peking University Beijing 100871. China.

Abstract In the study of n-dimensional spherical or hyperbolic geometry, n≥3, the volume of various objects such as simplexes, convex polytopes, etc. often becomes rather difficult to deal with. In this paper, we use the method of infinitesimal symmetrization to provide a systematic way of obtaining volume formulas of cones and orthogonal multiple cones in S^n（1） and H^n（-1）.

关键词： Hyperbolic geometry Volume

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

Effect of the protrusion shape on gas ingestion of two sealing structures

引用

Chinese Journal of Aeronautics 2021年第4期34卷 320-331页

作者： Zeyu wu Xiang LUO Jianqin ZHU hang CHEN Jiahua LIU School of Energy and Power Engineering Beihang UniversityBeijing 100083China National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics Beihang UniversityBeijing 100083China

The windage loss caused by protrusion in a rotor–stator cavity has been studied in detail,and there are abundant fitting formulas that have been summarized to calculate the moment *** other theorists have emphasized its effect on the sealing efficiency,proposing that installation of protrusion could alleviate gas ***,the protrusion shape which is an influential factor on the sealing efficiency has not been focused in previous *** the experimental method of measuring CO2 volume fraction,cavity pressure,and power consumption,we investigated the effects of several typical protrusion shapes on various parameters for two sealing structures,in order to obtain the optimal *** showed that a variation of the protrusion shape had little impact on the static pressure,but the total pressure and the sealing efficiency increased in different ***,even though the hexagon shape resulted in the highest sealing efficiency,we observed that the drop shape had the best overall performance in all of the eight models,which could result in higher efficiency of the turbine *** combination of a radial seal structure and protrusion could improve sealing efficiency better.

关键词： Axial seal Cavity Gas ingestion Protrusion shape Radial seal Sealing efficiency Turbine

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

Low-Temperature Photothermal Therapy:Strategies and Applications

引用

Research 2021年第1期2021卷 1085-1122页

作者： Xiulin yi Qiu-yi Duan Fu-Gen wu State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast University2 Sipailou RoadNanjing 210096China

Although photothermal therapy(PTT)with the assistance of nanotechnology has been considered as an indispensable strategy in the biomedical field,it still encounters some severe problems that need to be *** heat can induce treated cells to develop thermal resistance,and thus,the efficacy of PTT may be dramatically *** the meantime,the uncontrollable diffusion of heat can pose a threat to the surrounding healthy ***,low-temperature PTT(also known as mild PTT or mild-temperature PTT)has demonstrated its remarkable capacity of conquering these obstacles and has shown excellent performance in bacterial elimination,wound healing,and cancer ***,we summarize the recently proposed strategies for achieving low-temperature PTT based on nanomaterials and introduce the synthesis,characteristics,and applications of these ***,the combination of PTT and other therapeutic modalities for defeating cancers and the synergistic cancer therapeutic effect of the combined treatments are ***,the current limitations and future directions are proposed for inspiring more researchers to make contributions to promoting low-temperature PTT toward more successful preclinical and clinical disease treatments.

关键词： treatment thermal directions

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

Effect of protrusion amount on gas ingestion of radial rim seal

引用

Chinese Journal of Aeronautics 2020年第3期33卷 893-901页

作者： Zeyu wu Xiang LUO Nan CAO Xue LI hang CHEN School of Energy and Power Engineering Beihang UniversityBeijing 100083China National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics Beihang UniversityBeijing 100083China

In this paper, the effect of different amount of protrusion on various parameters in rotor–stator system was experimentally studied by measuring CO_2 concentration and pressure, in order to obtain the optimal protrusion *** parameters of different dimensionless sealing flow were measured under the condition that the annulus Reynolds number was 4.39 × 10~5 and the rotating Reynolds number was 1.05 × 10~*** results show that the change of the amount of protrusions has little effect on the static pressure in the cavity, and the static pressure change near the sealing ring is almost *** the total pressure and sealing efficiency increase first and then decrease with the increase of the amount of *** variation of power consumption is the same.A complex vortex structure will appear at the high radius region when the protrusion is *** the other hand, the protrusion can effectively reduce the minimum sealing flow of the rotor–stator ***, considering the sealing efficiency and power consumption,the best range of the protrusion amount is about *** ratio near this range can optimally balance the alleviation of the gas ingestion and the reduction of the power consumption.

关键词： Gas ingestion Protrusion amount Radial seal Rotor–stator cavity Sealing efficiency Turbine

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

Sonoafterglow luminescence for in vivo deep-tissue imaging

引用

Chinese Chemical Letters 2024年第10期35卷 9-10页

作者： Shihong wu Ronghui Zhou hang Zhao Peng wu State Key Laboratory of Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041China Analytical&Testing Center Sichuan UniversityChengdu 610064China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

Optical imaging is a key technique to study the pathological process and disease diagnosis,but there is still a great challenge to achieve highly sensitive in vivo deep-tissue *** interferences from the intrinsic autofluorescence and light scattering and re-absorption are typically observed in biological tissues,which severely impair target signal sensing and *** address the above issues,using of afterglow luminescence for imaging has been *** to its long lifetime,the images can be collected after ceasing the excitation,thus could eliminate the ***,the current afterglow luminescence still requires photoexcitation(mainly ultraviolet or visible light),the penetration depth of which is still limited for deeptissue imaging.

关键词： scattering luminescence excitation

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

Misdiagnosed dystrophic epidermolysis bullosa pruriginosa:A case report

引用

World Journal of Clinical Cases 2021年第13期9卷 3090-3094页

作者： Zi Wang yi Lin Xing-wu Duan Hai-Yan hang Xia Zhang Ling-Ling Li Department of Dermatology Dongzhimen Hospital Affiliated to Beijing University of Chinese MedicineBeijing 100000China

BACKGROUND Dystrophic epidermolysis bullosa pruriginosa(DEB-Pr)is a rare subtype of DEB,characterized by recurrent pruritus of the extremities,pruritus papules,nodules,and mossy-like *** date,fewer than 100 cases have been *** report a misdiagnosed 30-year-old man with sporadic late-onset DEB-Pr who responded well to tacrolimus treatment,thereby serving as a guide to correct diagnosis and *** SUMMARY A 30-year-old man presented with recurrent itching plaques of 1-year duration in the left tibia that aggravated and involved both legs and the *** revealed multiple symmetrical,purple,and hyperpigmented papules and nodules with surface exfoliation involving the tibia and dorsum of the neck with negative Nissl's sign,no abnormalities in the skin,mucosa,hair,or fingernail,and no local lymph node *** were never reported prior to *** immunoglobulin E level was 636 IU/*** manifestations suggested *** examination showed subepidermal fissure,scar tissue,and *** immunofluorescence showed no obvious ***,we were unable to perform electron microscopy or genetic research following his *** treated him with topical *** 2 wk,the itching alleviated,and the skin lesions began to *** adverse reactions were observed during *** Topical tacrolimus is a safe treatment option for patients with DEB-Pr and can achieve continuous relief of severe itching.

关键词： Differential diagnoses Dystrophic epidermolysis bullosa pruriginosa Pruritus Nodular prurigo Histopathological examinations Case report

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

Phase Residual Estimations for PCVs of Spaceborne GPS Receiver Antenna and Their Impacts on Precise Orbit Determination of GRACE Satellites

引用

Chinese Journal of Aeronautics 2012年第4期25卷 631-639页

作者： TU Jia GU Defeng wu yi yi Dongyun College of Science National University of Defense TechnologyChangsha 410073China

In-flight phase center systematic errors of global positioning system（GPS） receiver antenna are the main restriction for improving the precision of precise orbit determination using dual-frequency *** approach is one of the valid methods for in-flight calibration of GPS receiver antenna phase center variations（PCVs） from ground *** this paper,followed by the correction model of spaceborne GPS receiver antenna phase center,ionosphere-free PCVs can be directly estimated by ionosphere-free carrier phase post-fit residuals of reduced dynamic orbit *** the data processing of gravity recovery and climate experiment（GRACE） satellites,the following conclusions are ***,the distributions of ionosphere-free carrier phase post-fit residuals from different periods have the similar systematic ***,simulations show that the influence of phase residual estimations for ionosphere-free PCVs on orbit determination can reach the centimeter ***,it is shown by in-flight data processing that phase residual estimations of current period could not only be used for the calibration for GPS receiver antenna phase center of foretime and current period,but also be used for the forecast of ionosphere-free PCVs in future period,and the accuracy of orbit determination can be well improved.

关键词： global positioning system precise orbit determination phase center variations phase residual estimation GRACE

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

π-Conjugated cyanostilbene-based optoelectric functional materials

引用

Chinese Chemical Letters 2016年第8期27卷 1155-1165,1465页

作者： Cheng hang Hong-Wei wu Liang-Liang Zhu State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan University

π-Conjugated organic luminescent materials are essential components for modern optical and photoelectric *** review mainly probes into the recent work in the progress of smart π-conjugated organic systems in the form of cyanostilbene and its derivatives,which can regulate its excellent features in response to a variety of physical or chemical stimuli（***,light,magnetism,electric field,polarity,pH and solvent environment）.As a result of its extensive applicability and adaptability,cyanostilbene and its derivatives have been planted into different structural architectures such as polymers,functional nanoparticles,solid membranes,supramolecular systems and so *** review will first give a general description of the preparation and characterization of cyanostilbenebased optoelectric luminophores and then focus on their peculiar functional properties in the need for advanced material applications,such as AIEE（aggregation-induced enhanced emission effect）,solidstate emission,photovoltaics,photolithography and photochromism to be further processed *** purpose of this review is to give a platform of practical organic materials,mostly cyanostilbene and its derivatives,based on stable aromatic derivatives,to contribute to the booming of modern π-conjugated photoelectric materials that integrate with contemporary physics,material chemistry,bioengineering,medical science and aerospace altogether.

关键词： Cyanostilbene Multi-mode stimuli-response Photoisomerization Intelligent materials Conjugated polymers Supramolecular electronics

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

Subsurface Damage in Scratch Testing of Potassium Dihydrogen Phosphate Crystal

引用

Chinese Journal of Mechanical Engineering 2009年第1期22卷 15-20页

作者： WANG Ben wu Dongjiang GAO hang KANG Renke GUO Dongming Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education Dalian University of Technology Dalian 116024 China

Potassium dihydrogen phosphate （KDP） is an important electro-optic crystal, often used for frequency conversion and Pockels cells in large aperture laser systems. To investigate the influence of anisotropy to the depth of subsurface damage and the profiles of cracks in subsurface of KDP crystal, an experimental study was made to obtain the form of subsurface damage produced by scratches on KDP crystal in [100], [120] and [110] crystal directions on （001） crystal plane. The results indicated that there were great differences between depth and crack shape in different directions. For many slip planes in KDP, the plastic deformation and cracks generated under pressure in the subsurface were complex. Fluctuations of subsurface damage depth at transition point were attributed to the deformation of the surface which consumed more energy when the surface deformation changed from the mixed region of brittle and plastic to the complete brittle region along the scratch. Also, the process of subsurface damage from shallow to deep, from dislocation to big crack in KDP crystal with the increase of radial force and etch pit on different crystal plane were obtained. Because crystallographic orientation and processing orientation was different, etching pits on （100） crystal plane were quadrilateral while on （110） plane and （120） plane were trapezoidal and triangular, respectively.

关键词： potassium dihydrogen phosphate (KDP) crystal scratch subsurface damage

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：