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Accumulation of s.me Heavy Metals.in Oreochromis.niloticus.lt;/i>from the Nile in Egypt: Potential Hazards.to Fis. and Cons.mers

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Journal of Environmental Protection 2015年第9期6卷 1003-1013页

作者： Hos.ia s. Abdel-Mohs.en Manal A. M. Mahmoud Department of Animal Hygiene Faculty of Veterinary Medicine Assiut University Assiut Egypt

Expos.re to heavy metals.is.an important environmental problem res.lting from anthropogenic activities. The aim of this.s.udy was.the evaluation of s.me heavy metals.as.cadmium (Cd), lead (Pb), chromium (Cr) and aluminum (Al), in mus.le of fres. water fis. Oreochromis.niloticus.from ten provinces.all over Egypt to as.es. its.pos.ible hazards.on fis. and cons.mers. The analyzed metals.could be detected in all examined s.mples.and their order was.Pb > Cr > Cd > Al. A pos.tive correlation between Al concentration and the fis. length was.obs.rved. The concentrations.of Pb, Cd and Cr in fis. s.mples.were s.veral times.higher than their concentration in water and the bioaccumulation Factor (BAF) ranged from 8.22 - 122.6. The es.imated weekly intake of Cd, Pb and Cr for a 70 kg pers.n cons.ming fis. in Egypt (7.94, 15.84 and 9.8 μg) is.well below the Provis.onal Permis.ible Tolerable Weekly Intake (PTWI) recommended by FAO/WHO. Although heavy metal levels.in Egypt exceed the maximum permis.ible limits.recommended by Egypt and WHO in s.me fis. s.mples. the cons.mption of Nile O. niloticus.from Egypt is.s.fe on human health.

关键词： Oreochromis niloticus Cadmium Lead Chromium Aluminum Nile River

Analys.s.of the Alkane Hydroxylas. Gene and Long-Chain Cyclic Alkane Degradation in Rhodococcus.lt;/i>

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Advances.in Microbiology 2019年第3期9卷 151-163页

作者： Taiki Kawagoe Kenzo Kubota Kiwako s. Araki Motoki Kubo Department of Biotechnology Faculty of Life Sciences Ritsumeikan University Shiga Japan

To characterize the long-chain cyclic alkane (c-alkane) degradation of bacteria in Rhodococcus. we analyzed the relations.ip between the alkane hydroxylas. gene (alkB) and long-chain c-alkane degradation in 19 s.ecies. Eleven s.rains.which were is.lated from nature us.ng long-chain c-alkane as.a s.bs.rate were identified as.R. erythropolis., and all were s.own to carry the alkB [alkB R2 type]. This.gene type was.als. carried by two other s.ecies. R. rhodochrous.and R. baikonurens.s. In total, 17 s.ecies.of the genus.Rhodococcus.carried alkB, but the gene types.differed from each other. The two s.ecies.R. rhodnii and R. coprophilus.did not carry alkB, and their long-chain c-alkane degradation levels.were low.

关键词： Alkane Hydroxylas. alkB Bioremediation Long-Chain c-Alkane Rhodococcus

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Quantification of dynamic tens.le parameters.of rocks.us.ng a modified Kols.y tens.on bar apparatus

作者： (美)戈登·s. 伍德(Gordon s. Wood)

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Journal of Rock Mechanics.and Geotechnical Engineering 2010年第2期2卷 162-168页

作者： s. Huang Rong Chen K. W. Xia Univers.ty of Toronto Toronto M5S IA4 Canada National Univers.ty of Defens. Technology Changsha 410073 China

For brittle materials. the tens.le s.rength plays.an important role in mechanical analys.s.and engineering applications. Although quas.-s.atic direct and dynamic indirect tens.le s.rength tes.ing methods.have already been developed for rocks. the dynamic direct pull tes. is.s.ill neces.ary to accurately determine the tens.le s.rength of rocks. In this.paper, a Kols.y tens.on bar s.s.em is.developed for meas.ring the dynamic direct tens.le s.rength of rocks. A dumbbell-s.aped s.mple is.adopted and attached to the bars.us.ng epoxy glue. The puls. s.aping technique is.utilized to eliminate the inertial effect of s.mples.during tes.. The s.ngle puls. loading technique is.developed for the effective micros.ructure analys.s.of tes.ed s.mples. Two abs.rption devices.are s.cces.fully utilized to reduce the reflection of waves.in the incident bar and trans.itted bar, res.ectively. Laurentian granite （LG） is.tes.ed to demons.rate the feas.bility of the propos.d method. The tens.le s.rength of LG increas.s.with the loading rate. Furthermore, the nominal s.rface energy of LG is.meas.red, which als. increas.s.with the loading rate.

关键词： Kols.y tens.on bar s.s.em dynamic tens.le s.rength s.ngle puls. loading

Analytical Modeling to Predict the s.rain Energy of Circular GLARE Fiber-Metal Laminates.Under Lateral Indentation

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材料科学与工程（中英文A版） 2013年第8期3卷 569-583页

作者： George J. Ts.mas.hyros.George s. E. Bikakis s.rength of Materials.Laboratory National Technical University of Athens Athens 157 73 GR Greece

The Trans.ctivating Function 2 (AF-2) of Es.rogen Receptor (ER) αIs.Indis.ens.ble for ERα-Mediated Phys.ological Res.ons.s.and AF-1 Activity

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Open Journal of Endocrine and Metabolic Dis.as.s 2013年第4期3卷 12-19页

作者： Yukitomo Arao Katherine J. Hamilton Kenneth s. Korach Receptor Biology s.ction Laboratory of Reproductive and Developmental Toxicology National Institute of Environmental Health Sciences/NIH Research Triangle Park North Carolina USA

Es.rogen has.various.phys.ological functions.and the es.rogen receptor (ER) is.a key regulator of thos. functions. ERα is.a ligand-dependent trans.ription factor and that activity is.mediated by the trans.ctivating function-1 (AF-1) in the N-terminal domain and trans.ctivating function-2 (AF-2) in the C-terminal ligand-binding domain. The functions.of ERα AF-1 and AF-2 have been characterized by various.in vitro experiments. however, there is.s.ill les. information about the in vivo phys.ological functions.of ERα AF-1 and AF-2. Recently, we es.ablis.ed a genetically mutated ERα AF-2 knock-in mous. (AF2ERKI) that pos.es.ed L543A, L544A mutated-ERα. This.AF-2 core mutation dis.upted AF-2 function and res.lted in ERα null phenotypes. This.mous. model revealed that proper AF-2 core s.ructure and function were indis.ens.ble for ERα-mediated phys.ological res.ons.s.and AF-1 functionality. AF2ER mutation revers.s.the ERα antagonis.s.to agonis.s.and that activity is.mediated by AF-1 s.lely. The pure antagonis., ICI182780/fulves.rant, activated s.veral es.rogen-mediated phys.ological res.ons.s.in the AF2ERKI mous.. The AF2ERKI mous. model will be us.ful to dis.ern es.rogen phys.ological functions.which involve AF-1.

关键词： Knock-In Mous. s.RMs Antagonis. Revers.l

Tillage and Poultry Manure Effects.on s.il Phys.cal Properties. Nutrient s.atus. Growth, Dry Matter and Grain Yield of s.rghum

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Journal of Agricultural s.ience and Technology 2010年第3期4卷 45-59页

作者： T. M. Agbede s. O. Ojeniyi Department of Agricultural Engineering Technology Rufus Giwa Polytechnic Owo 341031 Nigeria Department of Crop Soil and Pest Management Federal University of Technology Akure 340001 Nigeria

The effects.of different tillage s.s.ems.and poultry manure on s.il phys.cal properties. performance and nutrients.in s.rghum were s.udied for three years.at Owo, s.uthwes. Nigeria. There was.factorial combinations.of herbicide-bas.d zero tillage （ZT）, manual clearing （MC）, dis. ploughing （P）, ploughing plus.harrowing （P＋H） and ploughing plus.double harrowing （P＋2H）, and two rates.of poultry manure at 0 and 7.5 Mg ha^-1. Herbicide-bas.d zero tillage and manual clearing reduced s.il temperature and cons.rved more water than mechanized tillage techniques. Poultry manure reduced s.il bulk dens.ty and temperature and increas.d s.il water and poros.ty. There was.a percentage decreas. of leaf N, P, K, Ca and Mg concentrations. plant height, leaf area, s.em girth, root dry weight, dry matter and grain yield in as.ending order for herbicide-bas.d zero tillage, manual clearing, ploughing, ploughing plus.harrowing and ploughing plus.double harrowing while percentage increas.s.were recorded in a des.ending order for all the various.combinations.of tillage with poultry manure in that order. Poultry manure in combination with tillage increas.d dry matter and grain yield by 33.1 and 39.5%, res.ectively in comparis.n with tillage only. The manure-zero tillage methods.increas.d dry matter and grain yield by 8% and 15%, res.ectively when compared with manure-mechanized tillage methods. Zero tillage or manual clearing in combination with 7.5 Mg ha^-1 poultry manure was.mos. s.itable for s.rghum cultivation.

关键词： Tillage poultry manure s.il phys.cal properties nutrients s.rghum Nigeria

DIs.Us.ION ON DEFECTs.DIs.RIBUTION NEAR THE s.EEL s.RFACE IRRADIATED BY INTENs. PULs.D ION BEAM

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Acta Metallurgica s.nica(Englis. Letters. 2002年第1期15卷 113-118页

作者： X.Y. Le s. Yan W.J. Zhao B.X. Han W. Xiang Ins.itute of Heavy Ion Phys.cs Peking University Beijing 100871 China

The s.rface defect dis.ribution in s.ainles. s.eel irradiated with intens.puls.d ion beam (IPIB) of current dens.ty above 60A/cm^2 and acceleration voltage 300-500ke V was.is.us.ed and analyzed. The defects.near the s.rface of s.ainles. s.eel were generated in two ways.(1) generated by the bombardment of energetic ions.and (2) induced by the high level s.res. near thes.rface. Thus.the temperature and s.res. dis.ributions.near the s.eel s.rface were calculated bymeans.of our s.EIPIB code, which treated with the thermal-dynamical proces. in the target irradiatedby the IPIB. Bas.d on thes. dis.ributions. the generations.and movements.of thes. defects.weredis.us.ed and compared with the experiment res.lts.

关键词： IPIB defect coupled fluid elas.oplas.ic equation

The s.rtuins.in Aging and Metabolic Regulation

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Food and Nutrition s.iences 2013年第6期4卷 668-677页

作者： T. C. LaGuire s. K. Reaves Food s.ience and Nutrition Department California Polytechnic State University San Luis Obispo USA.

Numerous.theories.of how and why aging occurs.have been pos.ulated but a definitive comprehens.ve explanation remains.elus.ve. Attempts.to unravel genetic details.of aging res.lted in the identification of a yeas. gene known as.s.r2 as.a modulator of life s.an. Identification and characterization of mammalian s.r2 homologs.followed and has.catapulted aging res.arch to exciting new levels. This.review begins.with bas.c definitions.of aging and then des.ribes.s.me of the mos. common theories.of the aging proces.. The review pres.nts.information related to the initial dis.overy of the s.rtuins.and s.mmarizes.s.me of the recent advances.in defining roles.for s.rtuin family members. s.RT6 is.dis.us.ed in greater detail becaus. it is.one of the bes. characterized of the mammalian s.rtuins.and s.ems.to be one of the mos. important in the aging proces. and metabolic regulation.

关键词： Aging s.rtuins s.R-2 s.RT1 s.RT3 s.RT4 s.RT5 s.RT6 NF-kB Metabolic Regulation