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| 1 | Grain Size and Wettability of TiO_2/SiO_2 Photocatalytic Composite Thin Filing显示文摘The uniform transparent TiO2/SiO2 photocatalytic composite thin films are prepared by sol-gel method on the soda lime glass substrates, and characterized by UV-visible spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), BET surface area, FTIR spectroscopy and X-ray photoelectron spectroscopy (XPS). It was found that the addition of SiO2 to TiO2 thin films can suppress the grain growth of TiO2 crystal, increase the hydroxyl content on the surface of TiO2 films, lower the contact angle for water on TiO2 films and enhance the hydrophilic property of TiO2 films. The super-hydrophilic TiO2/SiO2 photocatalytic composite thin films with the contact angle of 0° are obtained by the addition of 10%-20% SiO2 in mole fraction. | Jiaguo Yu, Xiujian Zhao, Jimmy C Yu, Jun Lin (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China Deportment of Chemised The Chinese University of Hong Kong, Hong Kong, | 2001 | Rare Metals2001，20，2： | 11 |
| 2 | Developmental Lead Exposure Alters the Distribution of Protein Kinase C Activity in the Rat Hippocampus显示文摘Chronic low-level lead (Pb) exposure in children is known to cause a deficit in learning and memory. In vitro studies have demonstrated that Pb altered protein kinase C (PKC) activityt Especially, hippocampal PKC has been correlated with performance in several learning tasks. The effects of Pb exposure on hippocampal PKC were investigated during development at various postnatal ages: postnatal day (PN) 7, 14, 28, and 56. Two-tenth % Pb acetate was administered to pregnant and lactating dams and then administered to weanling rats in drinking water. PKC activity was measured in both membrane and cytosolic fractions from the hippocampi of the controls and Pb-exposed animals. Pb-induced increase in PKC activity in the cytosolic fraction was obsereved in the PN56 rats. In contrast, PKC activity was decreased by Pb at PN7 in the membrane fraction. Furthermore, a significant decrease in the ratio of membrane to cytosolic PKC activity which is representative of PKC distribution was observed in the PN28 and PN56 Pb-exposed rats relative to the same-age controls. This study indicates that chronic Pb exposure during development influences hippocampal PKC activity and distribution. These changes may be involved in the subclinical neurotoxicity of chronic Pb exposure in young children. | HWEI-HSIEN CHEN TANGENG MA ARTHUR S. HUME AND ING K. HO(Deportment of Pharmacology and Toxicology, University ofMississippi Medical Center, 2500 North State Street,Jackson, MS 39216, USA) | 1998 | Biomedical and Environmental Sciences1998，11，1： | 7 |
| 3 | STUDY ON HARVESTED POPULATION WITH DIFFUSIONAL MIGRATION显示文摘This paper is devoted to the study of the dynamical behavior and harvesting problem of an exploited population with diffusional migration, for which a protective patch is established. We examine the effects of protective patch and harvest on the population resources and conclude that the protective patch is effective for the conservation of population resources and ecological environment, though in some cases the extinction can not be eliminated. The dangerous region, the parameters domains and the typical bifurcation curves of stability of steady states for the considered system are determined. The optimal harvest policy for the considered population is made also. The explicit expressions are obtained for the optimal harvesting effort, the maximum sustainable yield and the corre- sponding population density. Our results provide a theoretical evidence for the practical management of biological resources. | FAN Meng WANG Ke (Deportment of Mathematics, Northeast Normal University, Changchun 130024, China) ZHANG Yujuan ZHANG Shuwen LIU Huimin (Department of Mathematics, Anshan Teacher’s College, Anshan 114005, China) | 2001 | Journal of Systems Science & Complexity2001，14，2： | 7 |
| 4 | A New Concept in the Control of Iron Deficiency:Community-based Preventive Supplementation of At-Risk Groups by the Weekly Intake of Iron Supplements显示文摘Iron deficiency (ID), defined as an insufficient supply of iron to the cells of the body after iron reserves have been exhausted, is the most prevalent single nutritional deficiency, affecting over 2, 000 million people, mostly in the developing world. Infants, small children, adolescents and pregnant and fertile-age women are most vulnerable. Only about 50 % of people with ID develop iron deficiency anemia (IDA), since this is a late manifes tation of chronic ID. Based on the average daily iron requirement and on the rate of iron reutilization from red cell hemoglobin destruction, it can be estimated that after iron stores have been depleted, it takes about 4 months of ID erythropoiesis for adult women to have a drop in hemoglobin concentration [Hb] of 10 g/l, if the iron intake is only 70 % of requirement. IDA can be defined by a [Hb] below an appropriate cut-off point for age,sex, physiological condition and altitude above sea level, or by a [Hb] increment of morethan 10 g/l to the administration of adequate doses of iron. More than 85 % of the nutritional anemias are IDA alone, or of iron combined with folate or other nutrient deficiencies [WHO/UNICEF/UNU, 1997; Yip, 1994]. | FERNANDO E. VITERI(Deportment of Nutrilional Sciences and Toxicology, University ofCalifornia at Berkeley and United Nations Uliversity,Berkeley 94720, Chlifornia, USA) | 1998 | Biomedical and Environmental Sciences1998，11，1： | 5 |
| 5 | Inhibition of the Specific ~3H-DL-Glu Binding in the Hippocampus of Rat Brain by Lead显示文摘The effect of Pb2+ on 3H-DL-Glutamate (3H-DL-Glu) binding in the membrane preparations from the hippocampus of rat brain was investigated with a view to explaining the cognitive and learning deficits produced by the heavy metal. The results indicated that Pb2+ (3. 1-25. 0 μmol.L -1 ) inhibited 3 H-DL-Glu binding in a concentration-dependent manner . Scatchard analysis further revealed that at a concentration of 6. 3 μmol.L-1 Pb2 + interfered with binding mainly through significantly decreasing the density of binding sites. This finding provided an important insight into Pb2+ -induced impairments in learning and memory previously documented in children and in experimental animals chronically exposed to | ZHANG HENG-SHAN ZHAO XI-LONG SONG LI-HUA AND QIN YU-HUI(Deportment of Taxicology, Institute of Environmental HealthMinitoring, Chinese Academy of PreventiveMedicine, Beijing 100021, China) | 1998 | Biomedical and Environmental Sciences1998，11，1： | 2 |
| 6 | A targeted review of study outcomes with short ( < or =7m) endosseous dental implants placed in partially edentulous patients 显示文摘 | Hagi D Deporter DA Pilliar RM | 2004 | Periodontology2004，75，6： | 1 |
| 7 | Hazard to man and the environment posed by the use of urban waste compost :A review 显示文摘 | ISABELLE DEPORTES JEAN LOUIS BENOIT GUYOD DENIS ZMIROU | 1995 | The Science of the Total Environment1995，172，： | 1 |
| 8 | Dental implant design effect on bone remodeling显示文摘 | Pilliar R M Deporter D A Watson P A | 1991 | J Biomed Mater Res1991，25，4： | 1 |
| 9 | Hazard to man and the environment posted by the use of urban waste compost: a review 显示文摘 | Deportes I Benoit-Guyod J L Larsson L | 1995 | Sci Total Environ1995，172，： | 1 |
| 10 | A histological accessment of the initial healing reponse adjacent to porous surfaced 显示文摘 | Deporter DA Watson PA Pilliar RM | 1986 | J Dent Res1986，65，8： | 1 |
| 11 | Hazard to Man and the Environment Posed by the Use of Urban Waste Compost : A Review 显示文摘 | DEPORTES I BENOIT-GUYOD J L ZAMIROU D | 1995 | Science of the Total Environment1995，172，23： | 1 |
| 12 | The degradative role of the fibroblast in the remodelling and turnover of collagen in soft connective tissue显示文摘 | Cate AR Deporter DA | | 0，，01： | 1 |
| 13 | New Device for Melting without a Crucible,Fusion of High Melting Oxides in a Multitubular Furnace显示文摘 | Roulin Y Vitter G Deportes C C | 1969 | Revue Internationale des Hautes Temperatures des Refractaires(in French)1969，6，： | 1 |
| 14 | 显示文摘 | Pilliar R M Deporter D A Watson P A | 1998 | Oral Health1998，7，： | 1 |
| 15 | TWO NEW ARISTOLACTAMS FROM ARISTOLOCHIA CINNABARINA显示文摘TWO NEW ARISTOLACTAMS FROM ARISTOLOCHIA CINNABARINA￥HongLI;YoujiSAKAGAMI;ShingoMARUMO;XinMinCHEN(ChengduInstituteofBiology,Ac... | Hong LI Youji SAKAGAMI Shingo MARUMO Xin Min CHEN(Chengdu Institute of Biology, Academia Sinica, Chengdu 610041)(Deportment of Agricultural Chemistry, Nagoya University, Chikusa-Ku, Nagoya 464,Japan.) | 1994 | Chinese Chemical Letters1994，5，3： | 1 |
| 16 | Simplifying management of the posterior maxilla using short, porous--surfaced dental implants and simultaneous indirect sinus elevation显示文摘 | Deporter D Todescan R Caudry S | 2000 | Int J Periodontics Restorative Dent2000，20，5： | 1 |
| 17 | 显示文摘 | Taehe A Gan L Deporter D A | 2004 | Int J Oral Maxillofac Impls2004，19，： | 1 |
| 18 | Simplifying management of the posterior maxilla using short, porous-surfaced dental implants and simultaneous indirect sinus elevation 显示文摘 | Todescan R Caudry S | 2000 | Int J Periodontics Restorative Dent2000，20，5： | 1 |
| 19 | Comprehensive combinatory standard correction: a calibration method for handing instrumental drifts of gas chromatography-mass spectrometry systems 显示文摘 | Deport C Ratel J Berdagu e J L | 2006 | J Chromatogr A2006，1116，12： | 1 |
| 20 | Porous-surfaced dental implants in the partially edentulous maxilla: assessment for subclinical mobility显示文摘 | Deporter D Todescan R Riley N | 2002 | Int J Pefiodont Restor Dent2002，22，2： | 1 |
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