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Linnebjer—A South Swedish Oak Forest and Meadow Area—Revisited after Half a Century

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Open Journal of Ecology 2016年第2期6卷 74-83页

作者： Folke O. Andersson Bengt Nihlgård Department of Ecology Swedish University of Agricultural Sciences Uppsala Sweden Department of Biology Lund University Lund Sweden

An oak forest and three wet meadows/fens were reinvestigated after 50 years concerning tree vitality, biomass and productivity, and soil chemistry. Sulphur and nitrogen deposition has changed dramatically during these years, and the aim was to analyse the differences in both the oak forest and the open field ecosystems. Trees were re-measured and soil profiles were resampled. Important visible changes in the oak forest were stated concerning the vitality of oaks. Aboveground there was a decrease in tree biomass, production and litter fall, but a huge increase in standing dead logs. During the years, the deposition of sulphur had decreased drastically, but nitrogen deposition was still high. Soil acidification in the forest had decreased, reflected in an increased base saturation in the forest, in spite of slightly lowered pH-values. Strongly increased amounts of exchangeable Ca and Mg now appeared in the forest soil, and a substantial transport of calcium and magnesium had obviously taken place from the forest soil to the meadow and fens during the years. However, the most important soil change was the accumulation of organic matter. The increased accumulation of organic matter in turn meant increased amounts of colloid particles and microsites for ion exchange in the soil. This favoured 2-valence base cations, and especially Ca and Mg that increased very much in all the studied ecosystems. Carbon as well as nitrogen had strongly increased in the forest, meadow and fen soils. This was interpreted as a natural result of increased vegetation growth due to high nitrogen deposition, increased global annual temperature and increased carbon dioxide concentration in air. It was concluded that the decreased deposition of sulphur had had a positive effect on soil chemistry, and that the deposition of nitrogen probably had stimulated vegetation growth in general, and contributed to increased amount of organic matter in the soils. However, in this studied oak forest, the decre

关键词： Oak Disease Tree Vitality Deposition of S and N Soil Acidification Soil C and N Accumulation Increased Amounts of Ca and Mg

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局部晚期乳腺癌的治疗

国外医学（肿瘤学分册） 1992年第6期19卷 353-354页

作者： Rubens rd 彭开桂

局部晚期乳腺癌死亡率高,近2000例患者的回顾调查表明,其5年生存率仅20％。这一类型偶而病情发展急骤呈炎性乳癌表现,但是通常情况下发展缓慢。随着公众对乳腺癌认识的提高及其治疗的进展,局部晚期乳腺癌的发病率将会逐步下降。目前,在... 详细信息

局部晚期乳腺癌死亡率高,近2000例患者的回顾调查表明,其5年生存率仅20％。这一类型偶而病情发展急骤呈炎性乳癌表现,但是通常情况下发展缓慢。随着公众对乳腺癌认识的提高及其治疗的进展,局部晚期乳腺癌的发病率将会逐步下降。目前,在联合王国每年新发病数约为3500例,占15％。而发展中国家乳腺癌则多属局部晚期。局部晚期乳腺癌具有以下一种或多种特征:皮肤浸润、皮肤卫星结节、广泛的皮肤桔皮样变与深部组织粘连。

关键词：乳腺癌药物疗法放射疗法

Determination of Optimal Due-Date for Single-Machine Scheduling with Dynamic Programming Approach

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Systems Science and Systems Engineering 2000年第3期10卷 373-379页

作者： LU Xiang\|nan School of Management, Zhejiang University, 20 Yugu rd. Hangzhou 310027, China

This paper presents a method of dealing with the problem of assigning a due date which can either be known or unknown to a set of simultaneously available jobs and sequencing them on a single machine. The objective is to determine the optimal job sequence when the due date is common and known or to determine an optimal combination of the common due date and job sequence when the due date is unknown that minimizes a cost function. A dynamic programming algorithm of finding the optimal solution to the problem is presented. It is shown that the due date can simply be chosen from the set of marginal points of an interval which is divide within [0,∞] by the sum of every possible combination the job sequences. Finally, an illustrative example is provided.

关键词： Scheduling Single Machine System Dynamic Programming

瑞典南部相邻桦树和欧洲云杉林分的地表植被和土壤特征(英文)

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生态学报 2001年第5期21卷 721-729页

作者：史作民 Magnus Dahlgren Bengt Nihlgrd 中国林业科学研究院森林生态环境与保护研究所北京100091 隆德大学生态系

对瑞典南部 2 3对相邻的桦树和欧洲云杉林分的地表植被和土壤特征进行了研究。桦树和欧洲云杉林分曲芒发草( Deschampsia flexuosa L.)和苔藓植物的频度几乎没有区别 ,但桦树林分越桔 ( Vaccinium myrtillus L.)和黑果越桔 ( Vac-cinium... 详细信息

对瑞典南部 2 3对相邻的桦树和欧洲云杉林分的地表植被和土壤特征进行了研究。桦树和欧洲云杉林分曲芒发草( Deschampsia flexuosa L.)和苔藓植物的频度几乎没有区别 ,但桦树林分越桔 ( Vaccinium myrtillus L.)和黑果越桔 ( Vac-cinium vitis-idaea L.)的频度远大于欧洲云杉林分的频度。欧洲云杉林分各层土壤 (腐殖质层、0～ 1 0 cm矿物质土壤层和1 1～ 30 cm矿物质土壤层 )的酸度稍大于桦树林分各层土壤的酸度。欧洲云杉林分土壤可交换性 K、Ca和 Mg离子的含量稍大于桦树林分土壤的含量 ,但差别不明显 ,只有可交换性 Na离子的含量在欧洲云杉林分土壤中明显偏高。由于现在硫沉降明显降低。

关键词：桦树欧洲云杉林分地表植被土壤特征瑞典南部

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碘(Ⅰ)大环四胺配合物的合成及表征

成都科技大学学报 1992年第3期 85-88,94页

作者：王世华 JM温菲尔德 rd皮柯克成都科技大学化学系格拉斯哥大学化学系

以配体诱导歧化,氧化及取代法首次成功合成了饱和大环四胺的碘(Ⅰ)配合物,产物由元素分析、红外、电子及核磁共振谱表征。光谱分析表明,碘正离子的配位并未引起大环多胺构型的改变。

关键词：大环四胺合成碘络合物

Interaction between antigen presenting cells and autoreactive T cells derived from BXSB mice with murine lupus

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Cell Research 2007年第6期17卷 556-564页

作者： Peng Yang Bo Li Ping Lv Yan Zhang Xiao-Ming Gao, Department of Immunology, Peking University Health Science Center, Peking University, 38 Xueyuan rd, Beijing 100083, China Department of Immunology Peking University Health Science Center Peking University Beijing China

Systemic lupus erythematosus (SLE) is a typical autoimmune disease involving multiple systems and organs. Ampleevidence suggests that autoreactive T cells play a pivotal role in the development of this autoimmune disorder. This studywas undertaken to investigate the mechanisms of interaction between antigen presenting cells (APCs) and an autoreactiveT cell (ATL1) clone obtained from lupus-prone BXSB mice. ATL1 cells, either before or after γ-ray irradiation, wereable to activate naive B cells, as determined by B cell proliferation assays. Macrophages from BXSB mice were able tostimulate the proliferation of resting ATL1 cells at a responder/stimulator (R/S) ratio of 1/2.5. Dendritic cells (DCs) weremuch more powerful stimulators for ATL1 cells on a per cell basis. The T cell stimulating ability of macrophages and Bcells, but not DCs, was sensitive to γ-ray irradiation. Monoclonal antibodies against mouse MHC-Ⅱ and CD4 were ableto block DC-mediated stimulation of ATL1 proliferation, indicating cognate recognition between ATL1 and APCs. Ourdata suggest that positive feedback loops involving macrophages, B cells and autoreactive T cells may play a pivotalrole in keeping the momentum of autoimmune responses leading to autoimmune diseases.

关键词： SLE T cells antigen presenting cells

Deep Tectonic Processes and Superaccumulation of Metals Related to Granitoids in the Nanling MetaUogenic Province,China

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Acta Geologica Sinica(English Edition) 1999年第2期73卷 181-192页

作者： PEI Rongfu, WANG Ping’an, and PENG Cong Institute of Mineral Deposits, CAGS, 26 Baiwanzhuang rd., Beijing 100037 Institute of Geomechanics, CAGS, Beijing 100081 CAGS Inst Mineral Depositis Beijing 100037 Peoples R China CAGS Inst Geomech Beijing 100081 Peoples R China

The Nanling region is an important nonferrous and rare metal metallogenic province in South China, in which most of the deposits are related to granitoids in genesis. It covers southern Hunan, southern Jiangxi, Guangxi, Guangdong and Fujian provinces, with a total area of about 550,000 km2. This metallogenic province is well known in the world for its rich tungsten and tin resources. In the past 40-odd years, a vast amount of mineral exploration activities and studies of the geology of mineral deposits have been carried out and great achievements obtained in the province. This paper is focused on a discussion about the deep tectonic processes in the orogenic belt during the Mesozoic and their contribution to the superaccumulation of metals. Tectonically, this metallogenic province is composed of three units: (1) the marginal continental orogenic belt in the Southeastern Coast fold system in the Yanshanian; (2) the intercontinental orogenic belt in the collision suture belt between the Yangtze and Cathay-sian plates mainly in the Caledonian; and (3) the intracontinental orogenic belt induced by subduction of the ocean crust and delimination of the mantle lithosphere in the Yanshanian. It is suggested that superaccumulation of metals in this metallogenic province was caused by the existence of mantle rooted tectonics at the depth based on comprehensive studies of geophysical information of seismic, geothermal and magnetotelluric surveys in Nanling and its adjacent areas. The Xihuashan wolframite quartz vein deposit, the Shizhuyuan W, Sn, Mo, Bi greisen-skarn deposit and the Dachang tin-polymetallic deposit are three typical examples of the deep tectonic processes. However, this kind of deep tectonic processes only act as the 'engine' of the superaccumulation of metals, which means that they should have to correspond with the super-crust ore-controlling pattern of 'lines-rows-clusters' (L-R-C). This recog-nization is expected to play an important role in assessment of

关键词： deep tectonic process superaccumulation of metals Nanling China

Serum positive cagA in patients with non-ulcer dyspepsia and peptic ulcer disease from two centers in different regions of Turkey

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World Journal of Gastroenterology 2003年第4期9卷 833-835页

作者： Ender Serin Uur Yilmaz Ganiye Künefeci Birol zer Yüksel Gümürdülü Mustafa Gülü Fazilet Kayaseluk Sedat Boyaciolu Ba kent University Faculty of Medicine Department of GastroenterologyAdana Teaching and Medical Research CenterDadalolu Mahallesi39 SokakNo:601250 AdanaTurkey Ba■kent University Faculty of Medicine Department of GastroenterologyAnkara HospitalDadalolu Mahallesi39 SokakNo:601250 AdanaTurkey Ba■kent University Faculty of Medicine Department of PathologyAdana Teaching and Medical Research Center Dadalolu Mahallesi39 SokakNo:601250 AdanaTurkey

AIM: To investigate and compare frequencies of serum positive cagA in patients from two separate regions of Turkey who were grouped according to the presence of peptic ulcer disease or non-ulcer ***: One hundred and eighty Helicobacter pyloripositive patients with peptic ulcer disease or non-ulcer dyspepsia were included in the study. One hundred and fourteen patients had non-ulcer dyspepsia and 66 had peptic ulcer disease (32 with gastric ulcers and/or erosions and 34with duodenal ulcers). Each patient was tested for serum antibody to H. pylori cagA protein by enzyme ***: The total frequency of serum positive cagA in the study group was 97.2 %. The rates in the patients with peptic ulcers and in those with non-ulcer dyspepsia were 100% and 95.6%, respectively. These results were similar to those reported in Asian studies, but higher than those that have been noted in other studies from Turkey and Western ***: The high rates of serum positive cagA in these patients with peptic ulcer disease and non-ulcer dyspepsia were similar to results reported in Asia. The fact that there was high seroum prevalence regardless of ulcer status suggests that factors other than cagA might be responsible for ulceration or other types of severe pathology in H. pylori-positive individuals.

关键词： Helicobacter pylori Adult Biological Markers Dyspepsia Female Gastric Mucosa Helicobacter Infections Humans Male Peptic Ulcer Reproducibility of Results Turkey Urease

模向各向导性和侧向非均匀N层模型中的勒夫波传播

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世界地震译丛 1989年第1期20卷 50-56页

作者： Sing.,rd 邹钟毅