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| 1 | The Asymptotic Behavior of a Class of Second Order Differential Equation显示文摘In the paper the asympotic behavior of the solution of the following second order differential equation y+ q(t)f(y) =0 is investigated. Some results for asymptotic behavior of the nonoscillation solution are obtained. | FENG Zhao-sheng, WANC Xiao-hui, LI Jin-cheng ( Dept. of Math., Texas A&M University, College Station, TX 77843, USA Dept. of Stat., Texas A&M University, College Station, TX 77843, USA Basic Dep., Tianjin Vocational Tech. & Teaching College, Tianjin 3 | 2001 | Journal of Mathematical Research and Exposition2001，21，3： | 6 |
| 2 | THE BENCHMARK LAND PRICE SYSTEM AND URBANLAND USE EFFICIENCY IN CHINA显示文摘ABSTRACT: China began to introduce market principles and establish price mechanism to better manage land and improve land use efficiency in the late 1980s. Since then, land markets begin to emerge. A benchmark land price system, providing guidelines for land use rights selling and transferring, was established in order to overcome lack of market data and experiences in land transaction. The benchmark prices of land use rights are determined by land use, land use density (floor-land ratio), land grades, land improvement, and tenant resettlement costs. This paper first conducts a formal analysis based on modern urban economic theory. The formal model provides a theoretical foundation in which the benchmark land price system is assessed and evaluated in terms of land use and urban development. The paper then concludes that the benchmark price system has two theoretical problems. One is associated with the fact that floor-land ratio plays an important role in land price determination whereas the theory suggests the other way around. That is, floor-land ratio depends on land prices. The other problem is that the benchmark land price system does not provide adequate room for the substitution between land and capital inputs. The substitution is a key in achieving land use efficiency in land markets and urban development process. It is concluded that the practice of the benchmark land price system is at odd with reforms that aim to introduce market principles and mechanism to guide resource uses. Therefore, it is recommended that further land policy reform should be taken. | DING Cheng-ri(Department of Landscape Architecture and Urban Planning, Texas A &M University, Mail Stop 3137College Station, TX, 77843, USA) | 2001 | Chinese Geographical Science2001，11，4： | 4 |
| 3 | EXPLORATION OF Nb-BASED ADVANCED INTERMETALLIC MATERIAL显示文摘EXPLORATIONOFNb-BASEDADVANCEDINTERMETALLICMATERIALSDMDIMIDUK(Wright-Laboratory,MaterialsDirectorate,WL/MLLM,Wright-PattersonA... | D M DIMIDUK(Wright-Laboratory, Materials Directorate, WL/MLLM, Wright-Patterson AFB, OH45433-7817, USA)P R SUBRAMANIAN and M G MENDIRATTA (UES, Inc., Dayton, OH 45432, USA) | 1995 | Acta Metallurgica Sinica(English Letters)1995，8，Z1： | 3 |
| 4 | 直接评估吗啡刺激糖尿病人隐静脉内皮一氧化氮释放减少显示文摘to directly measure in real time basal and stimulated levels of NO released from human saphenous vein endothelium and to quantify the expression of the μopiate receptor, which has been linked with NO release. METHODS: Saphenous vein segments from patients with type 2 diabetes ( n = 12) and patients without diabetes (n =8) were obtained. The release of NO was measured directly from the endothelium using a NO-specific amperometric probe. NΩ-nitro-L-arginine methyl ester (L-NAME, 0.1 mmol/L), a NO synthase (NOS) inhibitor, or morphine (1 μmol/L), a stimulant, was administered and the measurements were repeated. Values were reported relative to the mean initial measurement of NO release from diabetic endothelium, which was defined as the relative zero level of NO release. A RT-PCR was then performed on the endothelium to measureμ opiate receptor expression. RESULTS: Diabetic patients (n = 12) showed a relative and significantly diminished basal level of released NO, (0.049± 0.012) nmol/L, compared | Thomas V BILHNGER, James A VOSSWINKEL, Patrick CADET, Christos M RIALAS, Harold I MAGAZINE, George B STEFANO(Division of Cardiothoracic Surgery, Department of Surgery, University Hospital and Medical Center, HSC, T19-080, Stony Brook, New York 11794-8191 Neuroscience Research Institute, State University of New York College at Old Westbury, Old Westbury, New York , USA) | 2002 | Acta Pharmacologica Sinica2002，23，2： | 3 |
| 5 | Modeling contaminant transport in homogeneous porous media with fractional advection-dispersion equation显示文摘The newly developed Fractional Advection-Dispersion Equation (FADE), which is FADE was extended and used in this paper for modelling adsorbing contaminant transport by adding an adsorbing term. A parameter estimation method and its corresponding FORTRAN based program named FADEMain were developed on the basis of Nonlinear Least Square Algorithm and the analytical solution for one-dimensional FADE under the conditions of step input and steady state flow. Data sets of adsorbing contaminants Cd and NH4+-N transport in short homogeneous soil columns and conservative solute NaCI transport in a long homogeneous soil column, respectively were used to estimate the transport parameters both by FADEMain and the advection-dispersion equation (ADE) based program CXTFIT2.1. Results indicated that the concentration simulated by FADE agreed well with the measured data. Compared to the ADE model, FADE can provide better simulation for the concentration in the initial lower concentration part and the late higher concentration part of the breakthrough curves for both adsorbing contaminants. The dispersion coefficients for ADE were from 0.13 to 7.06 cm2/min, while the dispersion coefficients for FADE ranged from 0.119 to 3.05 cm1.856/min for NaCI transport in the long homogeneous soil column. We found that the dispersion coefficient of FADE increased with the transport distance, and the relationship between them can be quantified with an exponential function. Less scale-dependent was also found for the dispersion coefficient of FADE with respect to ADE. | HUANG Guanhua, HUANG Quanzhong, ZHAN Hongbin , CHEN Jing, XIONG Yunwu & FENG Shaoyuan College of Hydraulic and Civil Engineering, China Agricultural University, Beijing 100083, China Chinese-Israeli International Center for Research and Training in Agriculture, Beijing 100083, China Department of Geology and Geophysics, Texas A& M University, TZ77843-3115, USA | 2005 | Science China Earth Sciences2005，48，z2： | 3 |
| 6 | SOURCE RADIATION AND RESPONSES OF WAVE PROPAGATION显示文摘Recordings of seismic waves propagating from earthquake source to a station at the earth’s surface are a system response function. The convolution operator in time domain can be simplified as a multiplication operator in frequency domain. We discuss in frequency domain the separation of source, path and site effects for global scaling of earthquake source radiation. Also discussed are source scaling model, faulting mechanism, and the H/V inversion problems with crustal and near surface structures. Gross features of apparent source spectra appear to be not much region dependent although there may be difference between tectonic styles within a region of tectonic mixture for which we need further study as data accumulate. Vertical spectra may be a better approach to approximate source radiation, as it has less crustal amplification effects than horizontal spectra. The H/V ratio is evidently a comprehensive indicator of amplification effects from near surface to deep structure. This gives it potential as an inversion tool to deduce site crustal structure. | CHEN Sheng zao 1 and Gail M Atkinson 2 (1. Geomatrix Consultants, Inc., 2101 Webster St., 12 th Floor, Oakland, CA 94612, USA, formerly at Dept. Earth Sciences & Ottawa Carleton Geoscience Center, Carleton University, Ottawa, Canada 2. Dept. Ea | 2001 | Geotectonica et Metallogenia2001，25，1： | 2 |
| 7 | The Synthesis of a New Macrocyclic Dinucleating Ligand,3,6,9,17,20,23-Hexaaza-29,30-Dihydroxy-13,27-Dimethyl-Tricyclo[23,3,1,1^(11,15)]Triaconta-1(28),11,13, 15(30),25,26-Hexaene显示文摘A new dinucleating 24-membered hexaazadiphenol macrocyclic ligand, 3,6,9,17,20, 23-hexaaza-29,30- dihydroxy-13,27-dimethyl-tricycl [23, 3, 1, 1 11,15] triaconta -1(28), 11,13,15(30),25, 26-hexaene, BDBPH, was synthesized by the NaBH4 reduction of the Schiff-base obtained from the [2+2] condensation between diethylenetriamine and diformyl -p-cresol. The structure was characterized by elemental analysis, 1HNMR and FAB-MS. The synthetic method was also discussed. | Guo Qiang SHANGGUAN Arthur E. MARTELL Zhong Ren ZHANG (Department of Chemistry, Jining Medical College, Jining 272013Department of Chemistry, Texas A&M University, College Station, Texas 77842 USA) | 2000 | Chinese Chemical Letters2000，11，7： | 2 |
| 8 | Metabolic cardio- vas- cular disease risk factors and their clustering in sub- clinical hypothyroidism 显示文摘 | Ashizawa K Imaizumi M Usa T | 2010 | Clin Endocrinol2010，72，5： | 1 |
| 9 | Biophotons:ultraweak light emission from living systems显示文摘 | Devaraj B Usa M Inaba H | 1997 | Current Opinion in Solid State&Materials Science1997，2，1： | 1 |
| 10 | Platelet-rich plasma promotes the proliferation of human muscle derived progenitor cells and maintains their stemness显示文摘 | Li H Usas A Poddar M | 2013 | PLoS One2013，8，64： | 1 |
| 11 | Metabolic cardiovasculardis- ease risk factors and their clustering in subclinical hypothyroidism 显示文摘 | Ashizawa K lmaizumi M Usa T | 2010 | Clin Endocrinol(Oxf)2010，72，5： | 1 |
| 12 | Optimum extrusion-cooking conditions for maximum expansion properties of corn starch显示文摘 | Hanna M A(Lineoln USA) | 1988 | Journal of Food Science1988，66，1： | 1 |
| 13 | Metabolic cardiovascular disease risk factors and their clustering in subclinical hypothyroidism显示文摘 | Ashizawa K Imaizumi M Usa T | 2010 | Clin Endocrinol (Oxf)2010，72，5： | 1 |
| 14 | Metabolic cardiovas :ular disease risk factors and their clustering in subclinical hypot- hyroidism 显示文摘 | Ashizawa K Imaizumi M Usa T | 2010 | Clin Endocrinol (Oxf)2010，72，5： | 1 |
| 15 | Screw configuration effects on corn starch expansion during extrusion显示文摘 | Sokhey A S Kollengode A N Hanna M A (Lincoln USA) | 1994 | Journal of Food Science1994，59，4： | 1 |
| 16 | Optimum extrusion- cooking conditions for maximum expansion properties of corn starch 显示文摘 | Chinnaswamy R Hanna M A ( Lincoln USA) | 1988 | Journal of Food Science1988，66，1： | 1 |
| 17 | Metabolic cardio- vascular disease risk factors and their clustering in subclinical hypotKyroidism显示文摘 | Ashizawa K Imaizumi M Usa T | 2010 | Clin Endocrinol(Oxf)2010，72，5： | 1 |
| 18 | Radiation dose-response relationships for thyroid nodules and autoimmune thyroid diseases in Hiroshima and Nagasaki atomic bomb survivors 55 ~ 58 years after radiation exposure显示文摘 | Imaizumi M Usa T Tominaga T | 2006 | JAMA2006，295，9： | 1 |
| 19 | Prevalence of interrelat- ed autoantibodies in thyroid diseases and autoimmune disorders 显示文摘 | Nakamura H Usa T Motomura M | 2008 | J Endocrinol Invest2008，31，10： | 1 |
| 20 | Locally advanced thyroid cancer: therapeutic options显示文摘 | Avenia N -Rag'usa M Monacelli M | 2004 | Chir Ital2004，56，4： | 1 |
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