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Experimental Study of Energy-Saving Air-Conditioner with Hot Water

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湖南大学学报（自然科学版） 2009年第S1期36卷 75-78页

作者： CHEN jian-bo,CHEN Dan,LU Ying(university of Shanghai for science and technology,Shanghai,china) university of Shanghai for science and technology Shanghai 200000 China

Energy-saving air-conditioner with hot water is an air source heat pump air-conditioner,which can also supply hot *** hot water is heated by a double pipe condenser connected with an air-cooled condenser in series in the *** experiment of the energy-saving air-conditioner was carried out in the enthalpy-difference air-conditioner *** hot water temperature and the compressor's discharge and suction pressure were recorded in the working condition,where the ambient temperature was at 43 ℃,35 ℃,21 ℃,7 ℃,and 2 ℃ *** results showed that the system operated stably and *** system can supply 240 L hot water at 50 ℃ in the whole year,and its coefficience of performance(COP)is much higher than the conventional air source heat pump *** energy conservation was proved by comparing the thermal efficiency with other sourece water heaters.

关键词： air-conditioning water heaters energy conservation heat pump systems thermal efficiency

Development in oxide metallurgy for improving the weldability of high -strength low-alloy steel-Combined deoxidizers and microalloying elements

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International Journal of Minerals,Metallurgy and Materials 2024年第6期31卷 1263-1284页

作者： Tingting Li jian Yang State Key Laboratory of Advanced Special Steel School of Materials Science and EngineeringShanghai UniversityShanghai 200444China

The mechanisms of oxide metallurgy include inducing the formation of intragranular acicular ferrite(IAF)using micron-sized inclusions and restricting the growth of prior austenite grains(PAGs)by nanosized particles during *** chaotically oriented IAF and refined PAGs inhibit crack initiation and propagation in the steel,resulting in high impact *** work summarizes the com-bined effect of deoxidizers and alloying elements,with the aim to provide a new perspective for the research and practice related to im-proving the impact toughness of the heat affected zone(HAZ)during the high heat input *** complex deoxidation with other strong deoxidants,such as Mg,Ca,Zr,and rare earth metals(REMs),can improve the toughness of the heat-affected zone(HAZ)by re-fining PAGs or increasing IAF ***,it is difficult to identify the specific phase responsible for IAF nucleation because ef-fective inclusions formed by complex deoxidation are usually *** alloying elements,such as C,Si,Al,Nb,or Cr,con-tents can impair HAZ toughness.A high C content typically increases the number of coarse carbides and decreases the potency of IAF ***,Cr,or Al addition leads to the formation of undesirable *** reduces the high-temperature stability of the ***,V,and B can enhance HAZ ***-containing precipitates present good thermal *** or V(C,N)is ef-fective in promoting IAF nucleation due to its good coherent crystallographic relationship with *** formation of the B-depleted zone around the inclusion promotes IAF *** interactions between alloying elements are complex,and the effect of adding dif-ferent alloying elements remains to be *** the future,the interactions between various alloying elements and their effects on ox-ide metallurgy,as well as the calculation of the nucleation effects of effective inclusions using first principles calculations will become the focus of

关键词： oxide metallurgy technology heat affected zone high-strength low-alloy steel intragranular acicular ferrite microalloying element

Investigations of Inclusion Modification in High Grade Pipeline Steel

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Journal of Iron and Steel Research International 2011年第S2期18卷 358-364页

作者： LIU jian-hua1, BAO Yan-ping1, WANG Ming2, REN Yi2, ZHANG Shuai2, WANG Shuang2 (1. Institute of Metallurgical Engineering, university of science and technology beijing, beijing 100083, china 2. technology Center of ANSC, Angang Steel Company Limited, Anshan 114001, Liaoning, china) Univ Sci & Technol beijing Inst Met Engn Beijing 100083 Peoples R China Angang Steel Co Ltd Technol Ctr ANSC Anshan 114001 Liaoning Peoples R China

SiCa line was injected into liquid pipeline steel at the end of LF refining as calcium treatment, and samples were taken from liquid steel in ladles before and after calcium treatment, liquid steel in mould, and slabs. Results show that Ca content in steel decreased obviously after calcium treatment with production, and the compositions, morphologies and sizes of inclusions in steel also varied with time; Al2O3 inclusions turned to be fine irregular CaS-CaO-Al2O3 compound inclusions after calcium treatment, and then to be fine globular CaO-Al2O3 inclusions in mould, and finally changed to be a few larger irregular CaS-CaO-Al2O3 complex inclusions in slabs; reoxidation of molten steel treated by Ca deteriorates effect of calcium treatment. Thermodynamic study revealed that inclusion variations were related with preferential reactions among Ca, Al2O3 and S and precipitation of S in high sulfur capacity CaO-Al2O3 inclusions. New calcium treatment controlling rules were put forward according to the inclusion variations and requirements of pipeline on inclusion controlling.

关键词： pipeline steel inclusion modification calcium treatment

Comprehensive Control on Microstructures and Properties of Medium Carbon V-N Microalloyed Steel Seamless Oil-Well Tubes of Hot-Rolling Non-Quenched/Tempered

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Journal of Iron and Steel Research International 2011年第S1期18卷 696-700页

作者： LIU Sheng-xin 1,2,LIU Guo-quan 2,CHEN Yong 1,ZHANG Yong-gang 3,HUANG jian-kai 3 (1.school of Materials science and Engineering,Zhengzhou university,Zhengzhou 450002,Hennan china 2.school of Materials science and Engineering,university of science and technology beijing,100083,china 3.Wuxi Seamless Steel Tube Company Ltd,Wuxi 214026,jiangsu china) Zhengzhou Univ Sch Mat Sci & Engn Zhengzhou 450002 Hennan Peoples R China Univ Sci & Technol beijing Sch Mat Sci & Engn Beijing 100083 Peoples R China Wuxi Seamless Steel Tube Co Ltd Wuxi 214026 Jiangsu Peoples R China

The relationship between microstructures and mechanical properties of a medium carbon V-N microalloyed steel used for N80 seamless oil-well tubes of hot rolling non-quenched/tempered (non-Q and T) was *** results have shown that volume percentages of upper bainite,modified bainite and ferrite have a decisive influence on impact energies of steel *** the total volume percentage of bainite is larger than 5%,the impact energy of tubes can not satisfy with the industrial ***,if the total volume percentage of bainite is smaller than 5%,then the impact energy of steel tubes enhances with volume percentage of ferrite *** final microstructures have closely relation with tube billet quality,controlled cooling temperature after tube rolling and cooling method after *** quality of medium carbon V-N microalloyed steel for non-Q and T oil-well tubes can be produced through comprehensive control of microstructures and mechanical properties in sub-procedures,especially for tube billet quality and controlled cooling parameters.

关键词： medium carbon V-N microalloyed steel N80 grade seamless oil-well tube microstructure mechanical property

Editorial of special issue on the 20th anniversary of Wuhan National Laboratory for Optoelectronics(WNLO)

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Chinese Optics Letters 2024年第2期22卷 1-2页

作者： jian Wang WNLO Huazhong University of Science and Technology

On the occasion of the 20th anniversary of the founding of Chinese Optics Letters,Wuhan National Laboratory for Optoelectronics(WNLO)has also gone through 20 *** is one of six national research centers approved by the Ministry of science and technology of china in *** predecessor was Wuhan National Laboratory for Optoelectronics(preparatory),one of five national laboratories approved for preparatory construction by the Ministry of science and technology of china in November *** was jointly built by the Ministry of science and technology of china,Ministry of Education of china,Hubei Provincial Government,and Wuhan Municipal Government.

关键词： jointly anniversary Wuhan

Retinoblastoma in a young adult mimicking Coats'disease

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International Journal of Ophthalmology(English edition) 2012年第5期5卷 625-629页

作者： Zheng Zhang, Ji-Tong Shi, Ning-Li Wang, jian-Min Ma beijing Tongren Eye Center, beijing Tongren Hospital, Capital Medical university, beijing Ophthalmology & Vision science Key Lab, beijing 100730, china beijing Tongren Eye Center Beijing Tongren Hospital Capital Medical University Beijing Ophthalmology & Vision Science Key Lab Beijing 100730 China.

Retinoblastoma is the most common childhood primary intraocular malignancy, with the majority of cases being diagnosed before 5 years of age. Retinoblastoma in adults is extremely rare. Here, we report the case of a 20-year-old man who presented with a 3 year history of blurred vision in the right eye. Imaging did not reveal the typical presentation of retinoblastoma. After considering Coats’ disease, a diagnosis of late-presenting retinoblastoma was made through cytological analysis. Diagnosis of retinoblastoma should be considered in the presence of uncertain mass lesions in the fundus of an adult.

关键词： adult retinoblastoma Coats'disease cytological analysis

Effect of Titanium,Antimony,Cerium and Carbon Nanotubes on the Morphology and Microhardness of Mg-based Icosahedral Quasicrystal Phase

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Journal of Materials science & technology 2010年第1期26卷 27-32页

作者： Zhifeng Wang, Weimin Zhao, Haipeng Li, jian Ding, Yongyan Li and Chunyong Liang school of Materials science and Engineering, Hebei university of technology, Tianjin 300130, china school of Materials science and Engineering Hebei University of Technology Tianjin 300130 China

For the first time, petal-like and spherical Mg-based icosahedral quasicrystal phase （I-phase） were obtained by introducing Ti, Sb, Ce and C nanotubes into Mg-Zn-Y alloy under normal casting conditions. The formation mechanism and stability criterion of spherical I-phase were discussed. The morphology and microhardness of I-phase and their determinants were studied in this paper. The results show that the different value of microhardness of I-phase could be attributed to the different kinds of the fourth component and its content, and its different innate characters. The final morphology of icosahedral quasicrystalline （IQC） is decided by the size of critical stable radius Rr, the content of the fourth component and degree of undercooling.

关键词： Quasicrystal Magnesium alloy Morphology Microhardness

Quantum Teleportation of One-to-Many Using (n+1)-Particle Entanglement

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Communications in Theoretical Physics 2007年第10期48卷 623-625页

作者： SHA Jin-Qiao FANG jian-Xing jianG Wei-Xing school of Physical science and technology,Suzhou university,Suzhou 215006,china school of Physical science and technology Suzhou University Suzhou 215006 China

In this paper,quantum teleportation of one-to-many using(n+1)-particle entanglement is *** thesender(Alice)wants to transmit an unknown quantum state to a distant receiver(Bob),similar to the previous schemes,Alice performs Bell-state measurement on particles belonging to herself and informs the receiver the results through theclassical *** that,it needs to perform the Hadamard operation on the other(n-1)particles and measurethem as *** the aid of the measurement results,Bob can operate a corresponding unitary transformation on hisparticle to reconstruct the original *** course,the reconstruction may realize at either location of n,but it cannotrealize at all locations at the same time.

关键词： quantum teleportation quantum entangled state unitary transformation

Source mechanism of strong aftershocks (M_s≥5.6) of the 2008/05/12 Wenchuan earthquake and the implication for seismotectonics

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science china Earth sciences 2009年第6期52卷 739-753页

Dozens of >M5, hundreds of >M4, and much more >M3 aftershocks occurred after the 2008/05/12 Wenchuan earthquake, which were well recorded by permanent and portable seismic stations. After relocated with P arrival, the >M3 aftershocks show two trends of distribution, with most of the aftershocks located along the north-east strike consistent with Longmenshan fault system, yet there is a north-west trend around the epicenter. It seems that substantially more aftershocks occur in regions with crystalline bedrocks. Then we collected waveform data from National Digital Seismograph Network and regional seismograph network of china, and employed 'Cut and Paste' method to obtain focal mechanisms and depths of the big aftershocks (M≥5.6). While most of those aftershocks show thrust mechanism, there are some strike slip earthquakes in the northern-most end of the rupture. Focal mechanisms show that the events located on the southern part of central Beichuan-Yingxiu Fault (BY) are mainly thrust earthquakes, which is consistent with initial mechanism of the main shock rupture. In the north part the aftershocks along the BY are also dominated by thrust slip, which is quite different from the right slip rupture of the main shock. Around Qingchuan-Pingwu Fault, the focal mechanisms are dominated by right-slip rupture with large depths (~18 km). So we suspected that in the north part the main shock might rupture on two faults: Beichuan Fault and Qingchuan-Pingwu Fault. The complex pattern of aftershock mechanisms argues for presence of a complicated fault system in the Longmenshan area.

关键词： focal mechanism seismotectonics Wenchuan earthquake cut and paste.