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EFFECTS OF INhIBITORS ON I-METhYLADENINE INDUCED MATURATION OF STARFISh OOCYTES

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Journal of Oceanology and Limnology 1986年第4期4卷 379-382页

作者： harold h. Lee,徐权汉 University of Toledo Ohio USA Institute of Oceanology Academia Sinica Qingdao

1-methladenine (1-MA) induces starfish oocytes maturation via surface reaction followed by the appearance of a cytoplasmic maturation factor which in turn induces germinal vesicle breakdown (GVBD) to resume meiosis. Cellular mechanisms involved in GVBD were investigated by microinjection of metabolic inhibitors. Colchicine (Co) inhibited maturation, cytochalasin-B (CB) delayed GVBD and actinomycin-D-(Act-D) and puromycin (Pu) had no effect. It appears that the microtubule and the microfilament systems are associated with the nuclear membrane dissolution during the process of oocyte maturation of starnsh.

关键词： GVBD CB Co EFFECTS OF INhIBITORS ON I-METhYLADENINE INDUCED MATURATION OF STARFISh OOCYTES

Plant–water relations at multiple scales:integration from observations,modeling and remote sensing

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Journal of Plant Ecology 2011年第1期4卷 1-2页

作者： Richard h.Waring Jiquan Chen huilin Gao College of Forestry Oregon State UniversityCorvallisOR 97331USA Department of Environmental Sciences University of ToledoToledoOH 43606USA Department of Civil and Environmental Engineering University of WashingtonSeattleWA 98195-2700USA

Water is a unique substance because there is no substitute for the support of *** expanding demand of the world’s growing population and economy,combined with climate change,attempts are underway to reduce water use from both managed and natural ***,plant–water relations are assessed by field experiments and extrapolated through remote sensing and modeling *** overarching challenge,thus,is to understand the basic interactions between plants and their environment well enough to predict responses regionally and globally,both now and in the *** authors of this special issue share their insights to help bridge these gaps,and thereby speed the integration of plant–water relations to make more reliable and soundly based predictions at multiple spatial *** special issue contains nine papers that use a combination of observations,models,and remote sensing to interpret the role that plants as individuals,communities and components of the landscape play in the hydrologic cycle.

关键词： integration scales thereby

Relationship Between Coarse/Fine Aggregate Space Coefficient and Properties of Self-compacting Concrete

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武汉理工大学学报 2010年第17期32卷 158-164,169页

作者： LONG G C LIU Y h XIE Y J School of Civil Engineering and Architecture Central South UniversityChangsha 410075China Quality Intendance and Inspect Station of Construction Engineering Chenzhou 423000China

For the sake of expounding the relationship between coarse/fine aggregate volume content and properties of self-compacting concrete(SCC),a parameter of aggregate space coefficient is proposed to study systematically the effects of fine/ coarse aggregates on workability,strength and volume stability of SCC by experiments. The optimized coarse/fine aggregates volume content of SCC was discussed with regard to specified properties. Results indicate there is a close relationship between aggregate space coefficient and properties of SCC not only in fresh state but also in hardened state. With the increasing coarse/fine aggregate space coefficients,workability of fresh SCC will be improved,the compressive strength decreases slightly and shrinkage of SCC however increases. When coarse aggregate space coefficient ranges from 1.2 to 1.7 and the fine aggregate space coefficients is from 0.6 to 1.0,SCC can meet self-compactability requirements in fresh state and have a good volume stability and appropriate strength in hardened state. The results will benefits for developing a new mixing design method for SCC.

关键词： self-compacting concrete aggregate space coefficient workability compressive strength shrinkage

hard Winter Wheat and Flour Properties in Relation to Breadmaking Quality of Straight-dough Bread:Flour Particle Size and Bread Crumb Grain

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食品科学 2006年第11期27卷 164-170页

作者： S h Park O K Chung P A Seib USDA-ARS Grain Marketing and Production Research Center Manhattan KS 66502 USA Department of Grain Science and Industry Kansas State University Manhattan KS 66506 USA

Samples of 12 hard winter wheats and their flours that produced breads varying in crumb grain scores were studied for 38 quality parameters including: wheat physical and chemical characteristics; flour ash and protein contents,starch damage,swelling power,pasting characteristics,and flour particle size distribution; dough properties determined by a mixograph; and breadmaking properties for pup loaves (100g flour). Only two parameters,the protein content of wheat and the granulation of flour,showed significant correlations with bread crumb grain scores. Protein content of wheat ranging 12.9%～14.5% determined by an NIR method showed a weak inverse relationship (r =-0.61,ph bread crumb grain score. Flour particle size distribution measured by both Alpine Air Jet Sieve and NIR methods revealed that the weight wt % of particles less than 38μm in size and representing 9.6%～19.3% of the flour weights was correlated positively (r =0 .78,ph crumb grain score,whereas wt % of flour particles larger than 125μm had an inverse relationship (r =-0.60,ph crumb grain score.

关键词： hard Winter Wheat and Flour Properties in Relation to Breadmaking Quality of Straight-dough Bread

On a Fast Integral Equation Method for Diffraction Gratings

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Communications in Computational Physics 2006年第6期1卷 984-1009页

作者： A.Rathsfeld G.Schmidt B.h.Kleemann Weierstrass Institute for Applied Analysis and Stochastics Mohrenstr.3910117 BerlinGermany Carl Zeiss AG Corporate Research and TechnologyOptical Design73446 OberkochenGermany

The integral equation method for the simulation of the diffraction by optical gratings is an efficient numerical tool if profile gratings determined by simple crosssection curves are *** method in its recent version is capable to tackle profile curves with corners,gratings with thin coated layers,and diffraction scenarios with unfavorably large ratio period over *** discuss special implementational issues including the efficient evaluation of the quasi-periodic Green kernels,the quadrature algorithm,and the iterative solution of the arising systems of linear ***,as an example we present the simulation of echelle gratings which demonstrates the efficency of our approach.

关键词： Diffraction gratings integral equation method preconditioning

SIGNET-RING MUCINOUS ADENOCARCINOMA OF ThE PANCREAS

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Chinese Medical Sciences Journal 1994年第3期9卷 176-178页

作者： W.h.Chow LouisT.C.Chow DepartmentofAnatomicalandCellularPathology PrinceofWalesHospitalShatinHongKong Consulatantphysician DepartmentofMedicineGranthamHospitalAberdeenHongKong.

ＳＩＧＮＥＴ－ＲＩＮＧＭＵＣＩＮＯＵＳＡＤＥＮＯＣＡＲＣＩＮＯＭＡＯＦＴＨＥＰＡＮＣＲＥＡＳＬｏｕｉｓＴ．Ｃ．ＣｈｏｗａｎｄＷ．Ｈ．Ｃｈｏｗ（ＤｅｐａｒｔｍｅｎｔｏｆＡｎａｔｏｍｉｃａｌａｎｄＣｅｌｌｕｌａｒＰａｔｈ... 详细信息

ＳＩＧＮＥＴ－ＲＩＮＧＭＵＣＩＮＯＵＳＡＤＥＮＯＣＡＲＣＩＮＯＭＡＯＦＴＨＥＰＡＮＣＲＥＡＳＬｏｕｉｓＴ．Ｃ．ＣｈｏｗａｎｄＷ．Ｈ．Ｃｈｏｗ（ＤｅｐａｒｔｍｅｎｔｏｆＡｎａｔｏｍｉｃａｌａｎｄＣｅｌｌｕｌａｒＰａｔｈｏｌｏｇｙ，ＰｒｉｎｃｅｏｆＷａｌ...

关键词：粘液瘤肿瘤转移肿瘤细胞胰腺腺癌

Numerical　sea　ice　prediction　in　China

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Acta Oceanologica Sinica 1998年第2期17卷 167-185页

作者： Wu h. Bai S. Zhang Z. National Research Center for Marine Environmental Forecasts State Oceanic Administration Beijing 100081 China

ＮｕｍｅｒｉｃａｌｓｅａｉｃｅｐｒｅｄｉｃｔｉｏｎｉｎＣｈｉｎａＷｕＨｕｉｄｉｎｇ，ＢａｉＳｈａｎ，ＺｈａｎｇＺｈａｎｈａｉ１（ＲｅｃｅｉｖｅｄＳｅｐｔｅｍｂｅｒ１２，１９９６；ａｃｃｅｐｔｅｄＪｕｎｅ５，１９９７）... 详细信息

ＮｕｍｅｒｉｃａｌｓｅａｉｃｅｐｒｅｄｉｃｔｉｏｎｉｎＣｈｉｎａＷｕＨｕｉｄｉｎｇ，ＢａｉＳｈａｎ，ＺｈａｎｇＺｈａｎｈａｉ１（ＲｅｃｅｉｖｅｄＳｅｐｔｅｍｂｅｒ１２，１９９６；ａｃｃｅｐｔｅｄＪｕｎｅ５，１９９７）Ａｂｓｔｒａｃｔ──Ａｄｙｎａｍｉ...

关键词： prediction sea ice China Numerical

Comment on "On linking climate to Chinese dynastic change:Spatial and temporal variations of monsoonal rain"

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Chinese Science Bulletin 2010年第32期55卷 3734-3737页

作者： ChENG hai EDWARDS R Lawrence hAUG Gerald h Institute of Global Environmental Change Xi'an Jiaotong University Xi'an 710049 China Department of Geology and Geophysics University of Minnesota Minneapolis MN 55455 USA Geological Institute Department of Earth Sciences ETH Ziirich CH-8092 Ziirich Switzerland

An article by Zhang et al. questions the interpretation of our oxygen isotope record from Wanxiang Cave and the sediment titanium record from Lake huguang Maar,and the possible linkage between climate change and Chinese culture. In response,we explain that their approach lacks logical rigor and their major argument is broadly consistent with,rather than contradictory to our original conclusions. We also note that climate-culture relationships similar to those that we observe in China have been observed for other cultures around the world.

关键词：气候变化时空变化中国雨水季风挂钩氧同位素记录中华文化

Anticancer Activity of Peganum harmala and haloxylon salicornicum Leaf Extracts on Lung Cancer A549 and Prostate Cancer PC-3 Cell Lines

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American Journal of Plant Sciences 2023年第11期14卷 1360-1374页

作者： Naif M. Alhawiti Waeel h. Alramadhan William Boadi Elbert Lewis Myles Department of Biological Science Tennessee State University Nashville TN USA Department of Chemistry Tennessee State University Nashville TN USA

Cancer is a worldwide disease that ranks as the second-largest cause of death after cardiovascular disease. In 2019, the estimated number of cancer deaths was around 10 million worldwide and 600,000 in the United States. Due to the high side effects of the available treatments for cancer, such as chemotherapy and radiotherapy, a demand for alternative treatments has been a goal for scientists with less toxicity and side effects. Lung cancer is the most common type of cancer worldwide and the leading cause of death in the United States. In addition, prostate cancer is the second-leading cause of cancer death in American men after lung cancer. Natural sources discovered to have therapeutic medicinal properties against human diseases are the plants Peganum harmala and haloxylon salicornicum. The aim of this study is to test the anticancer activity of leaf extracts of Peganum harmala and haloxylon salicornicum on lung cancer (A549) and prostate cancer (PC3) cell lines. The anticancer activity of P. harmala and h. salicornicum was studied using the assays: crystal violet viability, lipid peroxidation, and caspase-3 techniques, which were evaluated in vitro on two human cancer cell lines. The results of the study showed that both plants’ extracts reduced the viability of both cancer cell lines, which depended on the concentration of the extract. Also, P. harmala showed more potent activity against both types of cancer than h. salicornicum. P. harmala and h. salicornicum decreased the lipid peroxidation that induces cancer as well as increased the expression of caspase-3, which causes apoptosis and cell death. This study concluded that P. harmala and h. salicornicum leaf extracts showed significant anticancer properties, which might be due to the presence of phytochemicals, including flavonoids and phenolics.

关键词： Peganum harmala haloxylon salicornicum Lung Cancer Prostate Cancer Lipid Peroxidation Caspase-3 Apoptosis