中国砖格丝孢菌研究I.砖格孢属

在进行中国砖格丝孢菌分类研究中,发现砖格孢属一个新种和两个中国新记录种。新种是泰山砖格孢Dictyosporiumtaishanensis,新记录种是索兰砖格孢Dictyosporiumsolani和七臂砖格孢Dictyosporiumheptasporum。分别对三个种进行了中文描述,并附图,新种有拉丁文描述。研究标本保存在山东农业大学植物病理学标本室(HSAUP)。     

中国砖格丝孢菌研究I.砖格孢属*

在进行中国砖格丝孢菌分类研究中,发现砖格孢属一个新种和两个中国新记录种。新种是泰山砖格孢Dictyosporiumtaishanensis,新记录种是索兰砖格孢Dictyosporiumsolani和七臂砖格孢Dictyosporiumheptasporum。分别对三个种进行了中文描述,并附图,新种有拉丁文描述。研究标本保存在山东农业大学植物病理学标本室(HSAUP)。     

中国砖格丝孢菌研究Ⅰ.砖格孢属

在进行中国砖格丝孢菌分类研究中,发现砖格孢属一个新种和两个中国新记录种。新种是泰山砖格孢Dictyosporium taishanensis,新记录种是索兰砖格孢Dictyosporium solani和七臂砖格孢Dictyosporium heptasporum。分别对三个种进行了中文描述,并附图,新种有拉丁文描述。研究标本保存在山东农业大学植物病理学标本室(HSAUP)。     

中国砖格丝孢菌研究Ⅰ.砖格孢属

在进行中国砖格丝孢菌分类研究中,发现砖格孢属一个新种和两个中国新记录种.新种是泰山砖格孢Dictyosporium taishanensis, 新记录种是索兰砖格孢Dictyosporium solani和七臂砖格孢Dictyosporium heptasporum.分别对三个种进行了中文描述,并附图,新种有拉丁文描述.研究标本保存在山东农业大学植物病理学标本室(HSAUP).     

中国—记录属——扇格孢属

扇格孢属中国新记录属 Mycoenterolobium R.D.Goos Mycologia 62: 171, 1970. 模式种:宽孢扇格孢 M. platysporum R.D.Goos 宽孢扇格孢中国新记录种图 1     

中国砖格孢子丝孢菌研究V.—— 单格孢属

报道单格孢属的两个新种和三个中国新记录种,新种为长圆孢单格孢Monodictys oblongispora和脑形单格孢Monodictys cerebriformis,中国新记录种为光滑单格孢Monodictys levis, 黑素单格孢Monodictys melanopa, 多变单格孢Monodictys fluctuata。研究标本保存在山东农业大学植物病理学标本室(HSAUP)。     

中国单格孢属分类研究I(英文)

匍柄霉属1个新种和1个新记录种。新种是矩卵单格孢Ulocladium oblongo-obovoideum,新记录种是倒卵单格孢U. obovoideum。新种的模式标本和新记录种的标本保存于山东农业大学植物病理系标本室(HSAUP)。     

中国单格孢属分类研究Ⅰ

匍柄霉属1个新种和1个新记录种,新种是矩卵单格孢Ulocladium oblongo-obovoideum,新记录种是倒卵单格孢U.obovoideum。新种的模式标本和新记录种的标本保存于山东农业大学植物病理系标本室（HSAUP）。     

中国一新记录属——扇格孢属

扇格孢属 中国新记录属 Mycoenterolobium R.D.Goos Mycologia 62: 171, 1970. 模式种：宽孢扇格孢 M. platysporum R.D.Goos 宽孢扇格孢 中国新记录种 图 1 Mycoenterolobium platysporum R.D.Goos, Mycologia 62: 171, 1970. Fig. 1 菌体在自然基质上扩散型,黑色。菌丝无色至近无色,具隔膜,壁光滑,宽1.5～2.5 m。分生孢子单生,顶生或侧生,扇形、扁平状,砖格状分隔,以脐部为起点多细胞呈放射状排列,暗褐色至黑色,表面光滑60～150×55～100m,侧面观细胞作两层排列,厚20～25m。 基质及产地：榕树Ficus microcarpa …     

中国单格孢属分类研究

匍柄霉属1个新种和1个新记录种。新种是矩卵单格孢Ulocladium oblongo-obovoideum,新记录种是倒卵单格孢U. obovoideum。新种的模式标本和新记录种的标本保存于山东农业大学植物病理系标本室(HSAUP)。     

The fallacy of the Principle of Procreative Beneficence

The claim that we have a moral obligation, where a choice can be made, to bring to birth the 'best' child possible, has been highly controversial for a number of decades. More recently Savulescu has labelled this claim the Principle of Procreative Beneficence. It has been argued that this Principle is problematic in both its reasoning and its implications, most notably in that it places lower moral value on the disabled. Relentless criticism of this proposed moral obligation, however, has been unable, thus far, to discredit this Principle convincingly and as a result its influence shows no sign of abating. I will argue that while criticisms of the implications and detail of the reasoning behind it are well founded, they are unlikely to produce an argument that will ultimately discredit the obligation that the Principle of Procreative Beneficence represents. I believe that what is needed finally and convincingly to reveal the fallacy of this Principle is a critique of its ultimate theoretical foundation, the notion of impersonal harm. In this paper I argue that while the notion of impersonal harm is intuitively very appealing, its plausibility is based entirely on this intuitive appeal and not on sound moral reasoning. I show that there is another plausible explanation for our intuitive response and I believe that this, in conjunction with the other theoretical criticisms that I and others have levelled at this Principle, shows that the Principle of Procreative Beneficence should be rejected.     

Stages of life: A new metaphysics of conceptionism

When a human being comes into existence is crucial in bioethics. Conceptionism is the view that a human being comes into existence at conception. The twinning argument is an influential objection to this view. All versions of the twinning argument rely on a metaphysics of material objects, namely, endurantism. Given this, a strategy for defending conceptionism against the twinning argument is to deny endurantism and adopt an alternative metaphysics of material objects. A version of this strategy which has been debated in this journal is to adopt perdurantism, or the ‘multiple occupancy view’, on which monozygotic twins share the zygote region as a temporal part. We present a novel version of this strategy: conceptionists can evade the twinning argument by adopting an exdurantist metaphysics of material objects. We suggest reasons for thinking that this is a plausible and, indeed, preferable way for conceptionists to avoid the twinning argument.     

Genetic aspects of the organization of legumin genes in pea

We have compared physical and genetic maps of the region around the legJ gene in pea. In this vicinity there are four B-type legumin genes, arranged as two close pairs. The detection of a recombination event within this gene cluster allows the orientation of this group of genes within the surrounding linkage group to be determined. The relationship between physical and genetic distances in this region is discussed, as are the implications of this for relating physical and genetic maps elsewhere in the pea genome.     

静态荧光光谱法研究杜氏盐藻的生长规律

测量了杜氏盐藻不同生长期的静态荧光光谱,得出了杜氏盐藻生长规律曲线。通过与传统的分光光度计法和血球计数板法研究盐藻生长规律的比较发现,该方法反映的是活盐藻细胞浓度的变化情况,更能反映盐藻实际生长规律;不仅操作简便,灵敏度高,而且可以实现远距离非接触测量。     

The role of a beta-bulge in the folding of the beta-hairpin structure in ubiquitin

It is known that the peptide corresponding to the N-terminal beta-hairpin of ubiquitin, U(1-17), can populate the monomeric beta-hairpin conformation in aqueous solution. In this study, we show that the Gly-10 that forms the bulge of the beta-turn in this hairpin is very important to the stability of the hairpin. The deletion of this residue to desG10(1-16) unfolds the structure of the peptide in water. Even under denaturing conditions, this bulge appears to be important in maintaining the residual structure of ubiquitin, which involves tertiary interactions within the sequence 1 to 34 in the denatured state. We surmise that this residual structure functions as one of the nucleation centers in the folding process and is important in stabilizing the transition state. In accordance with this idea, deleting Gly-10 slows down the refolding and unfolding rate by about one half.     

Genetic identification of hybrid camelids

North American zoos in 1984 had the first opportunity in many years to obtain South American camelids after a long embargo on imports. The Rio Grande Zoo in Albuquerque, New Mexico, purchased two alpacas and one presumptive llama during this period. The llama, however, appeared to be phenotypically intermediate between a llama and an alpaca. In an attempt to ascertain the identity of this animal, it and purebred individuals of llama and alpaca were compared at 22 presumptive genic loci using starch-gel electrophoresis. Genic differences between llama and alpaca suggest this animal to be a hybrid. If further tests prove consistent with the findings of this study, this technique will provide a simple assay using easily obtained blood for identifying llama and alpaca. The use of genetic management techniques such as this in zoos holds great potential for helping to preserve pure breeding lines of closely related interfertile animals.     

Prospects for the involvement of cancer stem cells in the pathogenesis of osteosarcoma

Osteosarcoma (OS) is one of the most common bone tumors in children and adolescents that cause a high rate of mortality in this age group and tends to be metastatic, in spite of chemotherapy and surgery. The main reason for this can be returned to a small group of malignant cells called cancer stem cells (CSCs). OS-CSCs play a key role in the resistance to treatment and relapse and metastasis through self-renewal and differentiation abilities. In this review, we intend to go through the different aspects of this malignant disease, including the cancer stem cell-phenotype, methods for isolating CSCs, signaling pathways, and molecular markers in this disease, and drugs showing resistance in treatment efforts of OS.     

维甲酸与精子发生

维生素A的活性代谢物维甲酸在哺乳动物精子发生过程中发挥着重要的调节作用,但其具体调节机制并不十分清楚。该文拟对睾丸内维甲酸的运输、代谢、信号系统以及维甲酸调控精子发生的研究进展进行简单总结。     

Microbial biosorption of metals: potential in the treatment of metal pollution

The phenomenon of metal biosorption by microorganisms has been thoroughly documented. Although this phenomenon is exhibited by both living and non-living forms of biomass, the purpose of this chapter will be to review biosorption by the latter. In addition, the application of various technological processes required for exploitation of this phenomenon in waste treatment will be examined.