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Modification of Montmorillonite through Intercalative Polymerization 认领 引用 被引量：8
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作者 Lin Jie +2 位作者 ZHI Bing HAN 《Chinese Chemical Letters》 SCIE CAS 2003年第1期108-109,共2页
Montmorillonite (MMT) was modified through intercalative polymerization of phenol and formaldehyde catalyzed by oxalic acid. The modified montmorillonite was delaminated at large, as demonstrated by XRD and TEM studie... Montmorillonite (MMT) was modified through intercalative polymerization of phenol and formaldehyde catalyzed by oxalic acid. The modified montmorillonite was delaminated at large, as demonstrated by XRD and TEM studies. It can disperse easily in epoxy resin to form exfoliated nanocomposites. The nanoscale silicate platelets dispersed in water can be metallized by silver deposition. 展开更多
关键词 Montmorillonite intercalative polymerization novolac resin nanocomposites.
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The Popularization and Application of Cold Storage Red Blood Cells or Whole Blood at -80 ℃ of the Rh(D) Negative Patients in Surgical Operation 认领 引用 被引量：5
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作者 YU Zhongqing +7 位作者 HU Lihua Han Min RAO Shenzong LUO Chengwei 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 2002年第2期155-157,共3页
Summary: The efficiency of cold storage red blood cells (CSRBC) or whole blood at -80 ℃ used in 27 Rh(D) negative patients during surgical operation was reported. The Rh(D) negative patients received the transfusion ... Summary: The efficiency of cold storage red blood cells (CSRBC) or whole blood at -80 ℃ used in 27 Rh(D) negative patients during surgical operation was reported. The Rh(D) negative patients received the transfusion of CSRBC or whole blood stored at -80 ℃ for 180 to 360 days. The changes in the indexes, such as blood TB, DB, K +, Na +, BUN, Cr, urine protein (URPO), UOB, Hb, HCT, serum total protein, relative to hemolytic reaction and blood volume before and after transfusion were observed. The results showed that after transfusion of CSRBC or whole blood 27 cases were negative for urine protein and UOB, and the levels of BUN and Cr were normal (P>0.05). Blood TB, DB, Hb, and HCT were increased, while pH, blood K + and blood Na + was normal with the difference being not significant before and after operation (P>0.05). Plasma protein was decreased, but there was no significant difference before and after operation (P>0.05). It was suggested that CSRBC or whole blood at -80 ℃ could be safely infused to the Rh(D) negative patients without side effects during the surgical operation. 展开更多
关键词 Rh(D) negative patient -80 ℃ cold storage red blood cells surgical operation hemolytic reaction
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Typical Form of Organizational Innovation and Development Trend 认领 引用 被引量：2
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作者 石春生 Fang +4 位作者 Xingdong YANG Cuilan Han Xinjuan 《High Technology Letters》 EI CAS 2004年第1期70-72,共3页
Nowadays the organization of enterprises is facing unprecedented change enterprises, and organizational innovation has become a magic weapon to increase enterprise competitieness. This paper analyzes the existing base... Nowadays the organization of enterprises is facing unprecedented change enterprises, and organizational innovation has become a magic weapon to increase enterprise competitieness. This paper analyzes the existing base of institutional framework and suggests several forms and the development trend of institutional framework of organizational innovation at present. 展开更多
关键词 企业 机构改革 市场竞争力 行政联合 顾客服务中心 无结构组织
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Synthesis, Crystal Structure and Biological Activity of a Novel Amino Acid Salt (HGly)_4[HPMo12O40 ]_2·22H_2O 认领 引用 被引量：4
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作者 HAN Zheng-bo +1 位作者 CHANG Ya-ping 《Chemical Research in Chinese Universities》 SCIE EI CAS 2003年第1期15-19,共5页
A novel compound, (HGly) 4[HPMo 12 O 40 ] 2·22H 2O, was synthesized and characterized by means of elemental analysis, IR and X ray diffraction. The compound crystallized in a monoclinic space group Cc with a =4 0... A novel compound, (HGly) 4[HPMo 12 O 40 ] 2·22H 2O, was synthesized and characterized by means of elemental analysis, IR and X ray diffraction. The compound crystallized in a monoclinic space group Cc with a =4 0060(0 8) nm, b =1 2527(0 3) nm, c =1 9930(0 4) nm, β =96 36(3)°, V =9 940(3) nm 3, Z =2, R 1=0 0576, wR 2 =0 1746. The anti tumor activity of this compound was tested in two human tumor cell lines in vitro . 展开更多
关键词 Polyoxometalate Gly Crystal structure Biological activity
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Sampled-data Iterative Learning Control for Singular Systems 认领 引用 被引量：3
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作者 孙鹏 FANG +2 位作者 Zhong Han Zhengzhi 《High Technology Letters》 EI CAS 2004年第3期70-73,共4页
Sampled-data iterative learning control (SILC) for singular systems is addressed for the first time. With the introduction of the constrained relative degree, an SILC algorithm combined with a feedback control law is ... Sampled-data iterative learning control (SILC) for singular systems is addressed for the first time. With the introduction of the constrained relative degree, an SILC algorithm combined with a feedback control law is proposed for singular systems. Convergence of the algorithm is proved in sup-norm, while the conventional convergence analysis is in λ-norm. The final tracking error uniformly converges to a small residual set whose level of magnitude depends on the system dynamics and the sampling-period. Due to inequalities to estimate the level of the existing results of SILC, convergence is guaranteed not only at the sampling instants but on the entire operation interval, so that the inter-sample behavior is guaranteed, which is more practical for real implementation. 展开更多
关键词 奇异系统 机器人控制 试验数据迭代学习控制 算法收敛
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Seismotectonic environment of occurring the February 3, 1996 Lijiang M=7.0 earthquake, Yunnan Province 认领 引用 被引量：4
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作者 HAN Zhu-jun +7 位作者 GUO Shun-min XIANG Hong-fa ZHANG Jia-sheng RAN Yong-kang 《Acta Seismologica Sinica(English Edition)》 2004年第4期453-463,共11页
Lijiang-Daju fault, the seismogenic fault of the 1996 Lijiang M=7.0 earthquake, can be divided into Lijiang-Yuhu segment in the south and Yuhu-Daju segment in the north. The two segments show clear difference in geolo... Lijiang-Daju fault, the seismogenic fault of the 1996 Lijiang M=7.0 earthquake, can be divided into Lijiang-Yuhu segment in the south and Yuhu-Daju segment in the north. The two segments show clear difference in geological tectonics, but have the similar dynamic features. Both normal dip-slip and sinistral strike-slip coexist on the fault plane. This kind of movement started at the beginning of the Quaternary (2.4~2.5 Ma B.P.). As to the tectonic types, the detachment fault with low angle was developed in the Early Pleistocene and the normal fault with high angle only after the Mid-Pleistocene (0.8 Ma B.P.). Based on the horizontal displacements of gullies and the vertical variance of planation surfaces cross the Lijiang-Daju fault at east piedmont of Yulong-Haba range, the average horizontal and vertical slip rates are calculated. They are 0.84 mm/a and 0.70 mm/a since the Quaternary and 1.56 mm/a and 1.69 mm/a since the Mid-Pleistocene. The movements of the nearly N-S-trending Lijiang-Daju fault are controlled not only by the regional stress field, but also by the variant movement between the Yulong-Haba range and Lijiang basin. The two kinds of dynamic processes form the characteristics of seismotectonic environment of occurring the 1996 Lijiang earthquake. 展开更多
关键词 the 1996 Lijiang earthquake variant movement basin boundary fault seismotectonic envi-ronment
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BIFURCATIONS OF SUBHARMONIC SOLUTIONS IN PERIODIC PERTURBATION OF A HYPERBOLIC LIMIT CYCLE 认领 引用 被引量：1
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作者 HAN Mao-an +1 位作者 GU Sheng-shi 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2002年第8期981-986,共6页
Bifurcations of subharmonic solutions of order m of a planar periodic perturbed system near a hyperbolic limit cycle are discussed. By using a Poincare map and the method of rescaling a discriminating condition for th... Bifurcations of subharmonic solutions of order m of a planar periodic perturbed system near a hyperbolic limit cycle are discussed. By using a Poincare map and the method of rescaling a discriminating condition for the existence of subharmonic solutions of order m is obtained. An example is given in the end of the paper. 展开更多
关键词 bifurcation subharmonic solution limit cycle
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Analyses on Four Models and Cases of Enterprise Informatization 认领 引用 被引量：1
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作者 石春生 Han +4 位作者 Xinjuan YANG Cuilan ZHAO Dongbai 《High Technology Letters》 EI CAS 2003年第3期75-80,共6页
The basic conditions of the enterprise informatization in Heilongjiang province are analyzed and 4 models are designed to drive the industrial and commercial information enterprise. The 4 models are the Resource Integ... The basic conditions of the enterprise informatization in Heilongjiang province are analyzed and 4 models are designed to drive the industrial and commercial information enterprise. The 4 models are the Resource Integration Informatization Model, the Flow Management Informatization Model, the Intranet E-commerce Informatization Model and the Network Enterprise Informatization Model. The conditions for using and problems needing attentions of these 4 models are also analyzed. 展开更多
关键词 informatization model resource integration intranet e-commerce network enterprise
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Morphology of Films of SEBS Triblock Copolymers 认领 引用
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作者 HAN Xia +5 位作者 LIU Honglai DONG Yaming Hu Ying 《Chinese Journal of Chemical Engineering》 SCIE EI CAS 2005年第4期498-503,共6页
Surface morphologies of the films of poly [styrene-b-（ethylene-co-butene）-b-styrene] （SEBS） have been studied by using tapping-mode atomic force microscopy （TM-AFM）. The films of block copolymer were prepared bo... Surface morphologies of the films of poly [styrene-b-（ethylene-co-butene）-b-styrene] （SEBS） have been studied by using tapping-mode atomic force microscopy （TM-AFM）. The films of block copolymer were prepared both by spin-coating on mica and by solvent-casting on different solution surfaces. For spin-coating samples, the effect of solution concentration, solvent, and annealing temperature are investigated. It is shown that changing the concentration of the solution makes no difference on the morphology of the film of the block copolymer. The microstructures are quite stable during thermal annealing; only the size of the domains changes toward the equilibrium configuration. However, solvent annealing can notably change the microstructures. When different selective solvents are used for film spin-coating, different morphologies can be obtained and explained by the different solubility parameters of the solvents. As expected, significant different morphologies in the top and the bottom surfaces of the casting films were observed. The images of the top surfaces reveal cylinder microdomains, while those of the bottom surfaces were spherical morphologies. 展开更多
关键词 atomic force microscopy （AFM） morphology block copolymer spin-coating solvent-casting
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中国商贸产业发展与结构变动的趋势研究 认领 引用 被引量：2
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作者 晏维龙 胡荣华 +1 位作者 HAN Yao 《产业经济研究》 2001年第1期39-44,共6页
本文根据中国商贸产业发展的历史与逻辑,分析商贸发展与经济发展、城市发展,商贸发展中的内部结构、市场结构、产权结构、组织结构、业态结构、经营结构、技术结构的变化与调整等问题.
关键词 中国商贸产业 结构变动 趋势
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The Simulation of High Reynolds Number Cavity Flow Based on Fractional Volumetric Lattice Boltzmann Method 认领 引用
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作者 HAN Shan-ling +3 位作者 ZHU Ping LIN Zhong-qin 《Journal of Shanghai Jiaotong university(Science)》 EI 2005年第4期373-376,共4页
The fractional volumetric lattice Boltzmann method with much better stability was used to simulate two-chmensional cavity flows. Because the effective viscosity was reduced by the fraction factor, it is very effective... The fractional volumetric lattice Boltzmann method with much better stability was used to simulate two-chmensional cavity flows. Because the effective viscosity was reduced by the fraction factor, it is very effective for simulating high Reynolds number flows. Simulations were carried out on a uniform grids system. The stream lines and the velocity profiles obtained from the simulations agree well with the standard lattice Boltzmann method simulations. Comparisons of detailed flow patterns with other studies via location of vortex centers are also satisfactory. 展开更多
关键词 lattice Boltzmann method cavity flow fraction factor high Reynolds number flow
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谷物中的霉菌及霉菌毒素 认领 引用 被引量：3
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作者 胡兰 LIU +2 位作者 Li-xia HAN Ya-dong 《辽宁农业科学》 2001年第2期35-37,共3页
关键词 谷物 霉菌污染 霉菌毒素
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ELASTIC ANALYSIS OF ORTHOTROPIC PLANE PROBLEMS BY THE SPLINE FICTITIOUS BOUNDARY ELEMENT METHOD 认领 引用
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作者 SU Cheng +1 位作者 HAN Da-jian 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2002年第4期446-453,共8页
Non-singular fictitious boundary integral equations for orthotropic elastic plane problems were deduced according to boundary conditions by the techniques of singular-points-outside-domain. Then the unknown fictitious... Non-singular fictitious boundary integral equations for orthotropic elastic plane problems were deduced according to boundary conditions by the techniques of singular-points-outside-domain. Then the unknown fictitious load functions along the fictitious boundary were expressed in terms of basic spline functions, and the boundary-segment-least-squares method was proposed to eliminate the boundary residues obtained. By the above steps, numerical solutions to the integral equations can be achieved. Numerical examples are given to show the accuracy and efficiency of the proposed method. 展开更多
关键词 orthotropic plane problem spline function boundary element method
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Autosomal recessive hereditary auditory neuropathy 认领 引用
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作者 王秋菊 顾瑞 +12 位作者 曹菊阳 Yu Liming GUO WEIWEI YU Ning ZHOU Na Han Dongyi YANG Weiyan 《中华耳科学杂志》 2003年第1期8-13,18,共6页
Objectives: Auditory neuropathy (AN) is a sensorineural hearing disorder characterized by absent or abnormal auditory brainstem responses (ABRs) and normal cochlear outer hair cell function as measured by otoacoustic ... Objectives: Auditory neuropathy (AN) is a sensorineural hearing disorder characterized by absent or abnormal auditory brainstem responses (ABRs) and normal cochlear outer hair cell function as measured by otoacoustic emissions (OAEs). Many risk factors are thought to be involved in its etiology and pathophysiology. Three Chinese pedigrees with familial AN are presented herein to demonstrate involvement of genetic factors in AN etiology. Methods: Probands of the above - mentioned pedigrees, who had been diagnosed with AN, were evaluated and followed up in the Department of Otolaryngology Head and Neck Surgery, China PLA General Hospital. Their family members were studied and the pedigree diagrams were established. History of illness, physical examination,pure tone audiometry, acoustic reflex, ABRs and transient evoked and distortion- product otoacoustic emissions (TEOAEs and DPOAEs) were obtained from members of these families. DPOAE changes under the influence of contralateral sound stimuli were observed by presenting a set of continuous white noise to the non - recording ear to exam the function of auditory efferent system. Some subjects received vestibular caloric test, computed tomography (CT)scan of the temporal bone and electrocardiography (ECG) to exclude other possible neuropathy disorders. Results: In most affected subjects, hearing loss of various degrees and speech discrimination difficulties started at 10 to16 years of age. Their audiological evaluation showed absence of acoustic reflex and ABRs. As expected in AN, these subjects exhibited near normal cochlear outer hair cell function as shown in TEOAE & DPOAE recordings. Pure- tone audiometry revealed hearing loss ranging from mild to severe in these patients. Autosomal recessive inheritance patterns were observed in the three families. In Pedigree Ⅰ and Ⅱ, two affected brothers were found respectively, while in pedigree Ⅲ, 2 sisters were affected. All the patients were otherwise normal without evidence of peripheral neuropathy at the time of this writing. Conclusions: In this study, patients with feature of non- syndromic hereditary auditory neuropathy were identified in three Chinese families.Pedigree analysis indicates autosomal recessive inheritances in the pedigrees. The observed inheritance and clinical audiologic findings are different from those previously described for non-syndromic low-frequency sensorineural hearing loss. This information should facilitate future molecular candidate genes screening for understanding the mechanism of AN. 展开更多
关键词 auditory neuropathy inheritance pattern autosomal recessive audiology candidate genes screening otology
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Research in historical earthquakes in the Korean peninsula and its circumferential regions 认领 引用
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作者 ZHAI Wen-jie +3 位作者 WU Ge HAN Shao-xin 《Acta Seismologica Sinica(English Edition)》 2004年第3期366-372,共7页
The historical earthquake data is one of the important foundations for seismic monitoring, earthquake fore-cast and seismic safety evaluation. However, the recognition of earthquake is limited by the scientific and te... The historical earthquake data is one of the important foundations for seismic monitoring, earthquake fore-cast and seismic safety evaluation. However, the recognition of earthquake is limited by the scientific and techno-logical level. Therefore, the earthquake can only be described using perfect earthquake catalogue after the seismo-graph is invented. Before this time, the earthquake parameters were determined according to the earthquake disas-ter on the surface and the written records in history, and the earthquake level was measured using earthquake in-tensity.　　…… 展开更多
关键词 Korean peninsula historical earthquake three elements of earthquake
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Basic flbroblast growth factor protects auditory neurons and hair cells from noise exposure and glutamate neurotoxicity 认领 引用
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作者 翟所强 王大君 +4 位作者 王嘉陵 Han Dongyi YANG Weiyan 《中华耳科学杂志》 2003年第1期1-7,共7页
The purpose of the present study was to determine protectivie effects of basic fibroblast growth factor (bFGF) on cochlear neurons and hair cells in vitro and in vivo. In experiment I, cultured spiral ganglion neurons... The purpose of the present study was to determine protectivie effects of basic fibroblast growth factor (bFGF) on cochlear neurons and hair cells in vitro and in vivo. In experiment I, cultured spiral ganglion neurons (SGNs) prepared from P3 mice were exposed to 20mM glutamate for 2 hours before the culture medium was replaced with fresh medium containing 0, 25, 50, and 100 ng/ml bFGF, respectively. Fourteen days later, all cultures were fixed with 4% paraformaldehyde, and stained with 1% toluidine blue. The number of surviving SGNs were counted and the length of SGNs neurites were measured. Exposure to 20 mM glutamate for 24 hours resulted in an inhibition on neurite outgrowth of SGNs and elevated cell death. Treatment of the cultures with bFGF led to promotion of neurite outgrowth and elevated number of surviving SGNs. Effects of bFGF were dose dependent with the highest potency at 100 ng/ml. In experiment Ⅱ, in vivo studies were carried out with guinea pigs in which bFGF or artificial perilymph was perfused into the cochlea to assess possible protective effects of bFGF on cochlear hair cells and compound action potentials(CAP). The CAPs were measured before, immediatly and 48 hours after exposure to noise. Significant differences in CAP were observed (p＜0. 05 ) among the bFGF perfused group, control group(t =3. 896 ) and artificial perilymph perfused group (t =2. 520) at 48 hours after noise exposure, Cochleae were removed and hair cell Loss was analyzed in surface preparations prepared from all experimental animals. Acoustic trauma caused loss of 651 and 687 inner hair cells in the control and artificial perilymph perfused group, respectively. In sharp contrast, only 31 inner hair cells were lost in the bFGF perfused ears. Similarly, more outer hair cells died in the control and perilymph perfuesed group (41830 and 41968, respectively) than in the group treated with bFGF (34258). Our results demonstrate that bFGF protected SGNs against glutmate neurotoxicity in vitro. In addition, treatment with bFGF also protected hair cells from acoustic trauma. 展开更多
关键词 Basic fibroblast growth factor Cochlea Spiral ganglion neurons excitotoxicity, acoustic trau- ma, hair cells
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ON SOME PROPERTIES OF LIENARD SYSTEMS 认领 引用
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作者 HAN Mao-an 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2002年第4期454-462,共9页
Some sharp sufficient conditions for generalized Lienard systems to have positive or negative semi-orbits which do not cross the vertical isocline are given. Applications of the main results to some polynomial systems... Some sharp sufficient conditions for generalized Lienard systems to have positive or negative semi-orbits which do not cross the vertical isocline are given. Applications of the main results to some polynomial systems are also presented. 展开更多
关键词 Lienard system local property global property
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Comparison of Compositions and Structural Characterizations of Synthetic Nano-hydroxyapatite and Mineral Phase from Porcine Femoral Bone 认领 引用 被引量：4
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作者 张利 LI +8 位作者 Yubao WANG Xuejiang Peng Xuelin Zuo Yi Han Jimei 《High Technology Letters》 EI CAS 2004年第4期48-51,共4页
In the paper, nano-hydroxyapatite was synthesized by hydrothermal treatment. The crystal morphology and compositions of the synthetic HA were investigated using TEM, IR, XRD and XPS techniques and were compared with t... In the paper, nano-hydroxyapatite was synthesized by hydrothermal treatment. The crystal morphology and compositions of the synthetic HA were investigated using TEM, IR, XRD and XPS techniques and were compared with those of porcine femoral bone apatite. The results showed that the synthetic HA is nanometer rod crystal similar to the bone apatite, and the average crystal sizes calculated by Scherrer equation for the four samples (HA dried at 80℃, unburned bone apatite, HA calcined at 750℃ and bone apatite calcined at 750℃) are 20.6, 21.7, 22.5 and 27.6nm, respectively. Moreover, the essential compositions for the synthetic HA and bone apatite are almost the same. 展开更多
关键词 猪 股骨 矿物 羟磷灰石 分析方法
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EPR Study of a New Crystal of the Binuclear Copper(Ⅱ) Cluster Compound- Cu_2(α-C10H_7CH_2CO_2)_4-(DMF)_2 ·(DMF)_2·H_2O 认领 引用
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作者 孙琼丽 Han Shi－Yi 《Chinese Journal of Structural Chemistry》 SCIE CAS 1994年第1期9-15,共7页
In this paper, single crystal EPR study of a new binuclear copper (Ⅱ) cluster compound-[Cu2(α-C(10) H7CH2CO2)4 (DMF)2]·[DMF]2·H2O](DMF= (CH3)2NCOH) at room temperature is reported. The lines of △Ms=±... In this paper, single crystal EPR study of a new binuclear copper (Ⅱ) cluster compound-[Cu2(α-C(10) H7CH2CO2)4 (DMF)2]·[DMF]2·H2O](DMF= (CH3)2NCOH) at room temperature is reported. The lines of △Ms=±1 allowing transition and △M=2 forbiding transition are shown in EPR spectra. The experimental data are consistent with the calculated results by the leastsquares fitting prograrn in three principal planes of g and D tensors. The spin Hamiltonian parameters are as follows: gx=2. 1482, gy=2. 0529 ,gz=2. 3905, D= 0. 348 cm￣(-1) and E =0. 01 cm-1. The diagrams of the energy levels have been obtained when the magnetic field is oriented to three principal axes. The polycrystal EPR spectra have been measured at room temperature and 77K, respectively.and the parameters of these spectra are given (g∥= 2. 094, g⊥= 2. 425, D= 0. 37 cm-1,E=0). The parameter of the isotropic magnetic exchange interaction J=-254cm-1 is determined, and that of the anisotropic magnetic exchange J1=-153 cm-1 is calculated. The average magnetic susceptibility of the polycrystal sample χ= 1. 39 ×10-6 (c. g. s) has been measured by Faraday powder method. Thus the average magnetic mornent μ=1. 43 B. M. can be calculated. It is shown that the exchange interactions between the metal ions of the binuclear copper(Ⅱ) cluster compound are confirmed antiferromagnetic In nature. 展开更多
关键词 EPR spectroscopic binuclear copper cluster spin parameter magnetic exchange
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