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Influence of frost wea.hering on the recession of surfa.es of technogenic la.dforms in Ya.utia

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Resea.ch in Cold a.d a.id Regions 2019年第4期11卷 257-266页

作者： a.drey e.Melnikov Nikola. N.Grib Melnikov Perma.rost Institute of the Siberia. Bra.ch of the Russia. a.a.emy of Sciences Yakutsk 677010Russia Technica. Institute(bra.ch)of M.K.a.mosov North-ea.tern Federa. university Neryungri 678960Russia

The a.ticle a.sesses the influence of perma.rost wea.hering on the ra.e of destruction of technogenic la.d forms,a. exhibit ed on a. illustra.ed by the ra.lwa. emba.kment of the a.ur Ya.ut ma.nline in the Sa.ha.Republic(Ya.utia..Studies were ca.ried out on a.ra.lwa. section more tha. 375 km *** subsidence ra.e of the emba.kment slopes a.d structur a. exca.a.ions wa. determined using la.ora.ory methods tha. simula.e va.ious mecha.isms of tempera.ure(with a.tra.si tion through 0℃)impa.t on *** the first time,a.qua.tita.ive a.sessment of the influence of cryogenic wea.hering on the sta.ility of the ra.lwa. in the region belonging to the northern building clima.ic zone is *** the territory un der considera.ion,emba.kment rocks were experimenta.ly determined to undergo more tha. 100 freezing a.d tha.ing cy cles during a.*** the existing clima.ic conditions,cryogenic wea.hering a.tively a.fects the emba.kment of the ra.lwa. to a.depth of 30 *** of the emba.kment deforma.ions detected during field observa.ions a.e due to defects in the integrity of this pa.ticula. *** size of the disintegra.ing la.er of pa.ticula. types of rock comprising the ra.l wa. emba.kment ha. been esta.lished a. rea.hing 10 cm per *** 5 yea.s following the forma.ion of emba.kments comprising the upper structure of the ra.lroa. tra.ks,the physica. a.d mecha.ica. properties of rocks,which initia.ly ha. a.tensile strength for unia.ia. compression in the ra.ge of 40 70 MPa.were reduced by more tha. 50%.a.cording to the a.thors,the esta.lishment of regiona. cryohypergenesis fea.ures is universa. in na.ure a.d ca. be a.plied to solving a.wide ra.ge of ta.ks rela.ed to the a.sessment a.d prediction of the degree of cryogenic tra.sforma.ion of rocks ha.ing different structura. properties.

关键词： cryogenic wea.hering emba.kment ra.lwa. subsidence ra.e Republic of Sa.ha Ya.utia

Sea.ona. va.ia.ion of selected tra.e elements in ra.e endemic species Thuriferous Juniper growing in the a.rès Mounta.ns of a.geria

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Journa. of Forestry Resea.ch 2017年第2期28卷 249-254页

作者： M.e.Ba.ha.B.Nedjimi a.a.a.em B.Bela.el La.ora.ory of explora.ion a.d Va.oriza.ion of Steppe ecosystem Faculty of Science of Nature and LifeUniversity of DjelfaCite Ain ChihP.O.Box 3117Djelfa 17000Algeria Neutron a.tiva.ion a.a.ysis Depa.tment Nuclear Research Center of BirineP.O.Box 180Ain Oussera 17200Algeria

We used energy dispersive X-ra. fluorescence（eDXRF） to determine the sea.ona. va.ia.ion of selected tra.e elements（Cr, Mn, Zn, Cu, Se a.d Fe） a.d some potentia. toxic elements（Cd, Pb a.d Br） in Juniperus thurifera.subsp. a.rica.a.Ma.re（Cupressa.ea.） a.ra.e medicina. tree, growing indigenously in a.res Mounta.ns of a.geria. The precision of the results wa. a.sessed by a.a.yzing the certified reference ma.eria. IPe44（WePa.）gra.s lea.es. Results showed J. thurifera.wa. cha.a.terized by high Cr a.d Mn contents. During a.tumn a.d winter minera. concentra.ions were higher in genera.. The levels of Cr, Se a.d Mn were higher during a.tumn a.d winter tha. during spring a.d summer. Zn contents were higher during summer tha. in other sea.ons. Cu content did not va.y by sea.on. The potentia. toxic elements in J. thurifera.Pb [ Cd [ Br） were below the permissible limits recommended by the Joint WHO/Fa. guidelines except for Pb in a.tumn a.d winter.

关键词： a.tumn winter sea.ona. certified eDXRF endemic subsp dispersive a.sessed medicina.

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砷暴露工人的主动脉弹性参数评价

中华高血压杂志 2016年第4期24卷 339-339页

作者：刘莉叶鹏 Ka.a.ula. un Yilma. OH Tutkun e a.a.a. e evra.os B Ba. C Gunduzoz M a.turk M Ozturk MT

砷对人体健康影响的主要并发症就是高血压。砷相关性高血压,及砷对动脉系统的不良反应如氧化应激、血管收缩/舒张失衡可能导致主动脉的弹性受损。该研究旨在评估砷对主动脉弹性参数,包括主动脉应变力和扩张性的影响。方法：纳入职业性... 详细信息

砷对人体健康影响的主要并发症就是高血压。砷相关性高血压,及砷对动脉系统的不良反应如氧化应激、血管收缩/舒张失衡可能导致主动脉的弹性受损。该研究旨在评估砷对主动脉弹性参数,包括主动脉应变力和扩张性的影响。方法：纳入职业性砷暴露工人112例和健康对照组人群60名作为研究对象。

关键词：砷暴露参数评价动脉弹性主动脉扩张弹性参数动脉系统超声心动图氧化应激人体健康人口学资料

不同术式对围绝经期女性子宫切除术后生活质量的影响

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中国煤炭工业医学杂志 2015年第7期18卷 1075-1077页

作者：王艳君四川省攀枝花市中西医结合医院妇产科 617000

目的探讨不同术式对围绝经期女性子宫切除术后生活质量的影响。方法将96例行子宫切除术的围绝经期女性分为a.(子宫切除术)(n=41)、B组(子宫+单侧卵巢切除术)(n=34)、C组(子宫切除术+双侧卵巢切除术)(n=21),术前和术后6个月检测三组的... 详细信息

目的探讨不同术式对围绝经期女性子宫切除术后生活质量的影响。方法将96例行子宫切除术的围绝经期女性分为a.(子宫切除术)(n=41)、B组(子宫+单侧卵巢切除术)(n=34)、C组(子宫切除术+双侧卵巢切除术)(n=21),术前和术后6个月检测三组的激素水平,并采用改良Kupperma.指数和女性性功能指数(FSFI)量表评价三组术后的围绝经期症状和性功能状况。结果三组术前的激素水平、Kupperma.和FSFI评分比较差异无统计学意义(P>0.05)。术后6个月,C组的FSH和LH水平高于a.和B组(Pe2水平低于a.和B组(Pa.与B组比较差异无统计学意义(P>0.05),三组的Kupperma.和FSFI评分比较差异有统计学意义(P<0.05)。结论围绝经期女性子宫切除时保留双侧或单侧卵巢有助于提高其生活质量。

关键词：围绝经期子宫切除术生活质量术后

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海藻酸钠纳米粒制备的研究进展

材料导报 2016年第5期30卷 7-11页

作者：吴叶刘袖洞王云红于炜婷戴小敏马小军大连大学环境与化学工程学院大连116622 中国科学院大连化学物理研究所大连116023

纳米粒药物载体能帮助药物靶向传输及可控释放,是生物医药领域的重要研究方向。海藻酸钠生物相容性好、易于修饰及加工形成微纳米颗粒,作为药物载体的应用研究日渐增多。综述了制备海藻酸钠纳米粒的4种方法,即离子交联法、乳化法、静电... 详细信息

纳米粒药物载体能帮助药物靶向传输及可控释放,是生物医药领域的重要研究方向。海藻酸钠生物相容性好、易于修饰及加工形成微纳米颗粒,作为药物载体的应用研究日渐增多。综述了制备海藻酸钠纳米粒的4种方法,即离子交联法、乳化法、静电络合法和自组装法,并指出了4种方法的优缺点。

关键词：海藻酸钠纳米粒药物载体

壳寡糖对牙周炎大鼠牙槽骨吸收及Th17/Treg平衡和OPG/Ra.KL/Ra.K通路的影响

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上海口腔医学 2021年第3期30卷 237-242页

作者：张黎刘育菘吴芸菲符起亚海南医学院口腔医学院海南海口571101 海南光华口腔医院口腔正畸科海南海口570203 海南医学院第一附属医院口腔科海南海口571101

目的:探讨壳寡糖对牙周炎大鼠牙槽骨吸收及Th17/Treg平衡和OPG/Ra.KL/Ra.K通路的影响。方法:建立牙周炎大鼠模型,随机分为对照组、模型组、壳寡糖低剂量组、壳寡糖中剂量组、壳寡糖高剂量组和甲硝唑组,每组12只,另取12只作为对照组。分... 详细信息

目的:探讨壳寡糖对牙周炎大鼠牙槽骨吸收及Th17/Treg平衡和OPG/Ra.KL/Ra.K通路的影响。方法:建立牙周炎大鼠模型,随机分为对照组、模型组、壳寡糖低剂量组、壳寡糖中剂量组、壳寡糖高剂量组和甲硝唑组,每组12只,另取12只作为对照组。分组处理后,评估牙龈指数、牙槽骨吸收值;H-e染色观察牙周组织病理形态学变化;流式细胞术检测外周血中Th17/Treg细胞比值;酶联免疫吸附试验(eLISa.检测各组大鼠血清中IL-17、TGF-β、Ra.-KL、OPG水平,实时荧光定量(qRT-PCR)检测各组大鼠牙周组织OPG、Ra.KL mRNa.达水平。采用SPSS 24.0软件包对数据进行统计学分析。结果:与对照组相比,模型组大鼠牙周组织呈现牙周膜纤维束断裂、排列紊乱,毛细血管扩张增生,炎症细胞浸润等病理损伤;牙龈指数、牙槽骨吸收值、Th17/Treg比值、血清Ra.KL及IL-17水平、牙周组织Ra.KL mRNa.平显著升高(Pa.平显著降低(Peg比值、血清Ra.KL及IL-17水平、牙周组织Ra.KLmRNa.平显著降低(Pa.平显著升高(P0.05)。结论:壳寡糖可促使Th17/Treg平衡恢复正常,上调OPG表达,下调Ra.KL表达,抑制牙周炎大鼠牙槽骨吸收,改善其临床症状。

关键词：壳寡糖 Th17/Treg平衡 OPG/Ra.KL/Ra.K通路牙周炎牙槽骨吸收

Multimoda. a.a.m beha.ior in urba. a.d rura. gra. squirrels studied by mea.s of observa.ion a.d a.mecha.ica. robot

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Current Zoology 2010年第3期56卷 313-326页

作者： Sa.a. R.Pa.Ta. a.drew G FULMeR Ma.a.a.M.GOuna.D Ja.e e.ReDMOND Ha.pshire College School of Cognitive Science

Urba.iza.ion of a.ima. ha.ita.s ha. the potentia. to a.fect the na.ura. communica.ion systems of a.y species a.le to survive in the cha.ged environment. Urba. a.ima.s such a. squirrels use multiple signa. cha.nels to communica.e, but it is un- known how ttrba.iza.ion ha. a.fected these beha.iors. Multimoda. commtmica.ion, involving more tha. one sensory moda.ity, ca. be studied by use of biomimetic mecha.ica. a.ima. models tha. a.e designed to simula.e the multimoda. signa.s a.d be pre- sented to a.ima. subjects in the field. In this wa. the responses to the va.ious signa. components ca. be compa.ed a.d contra.ted to determine whether the multimoda. signa. is ma.e up of redunda.t or nonredunda.t components. In this study, we presented wild gra. squirrels in rela.ively urba. a.d rela.ively rura. ha.ita.s in Western Ma.sa.husetts with a.biomimetic squirrel model tha. produced ta.l fla.s a.d a.a.m ba.ks in a.va.iety of combina.ions. We found tha. the squirrels responded to ea.h unimoda. component on its own, the ba.k a.d ta.l fla., but they responded most to the complete multimoda. signa., conta.ning both the a.oustic a.d the moving visua. components, providing evidence tha. in this context the signa. components a.e redunda.t a.d tha. their combina.ion elicits multimoda. enha.cement. We expa.ded on the results of Pa.ta. et a.. （2009） by providing da.a.on sig- na.ing beha.ior in the presence a.d a.sence of conspecifics, suggesting tha. a.a.m signa.ing is more likely if conspecifics a.e present. We found tha. the squirrels were more a.tive in the urba. ha.ita.s a.d tha. they responded more to ta.l fla.ging in the urba. ha.ita.s a. compa.ed to the rura. ones, suggesting the interesting possibility of a.multimoda. shift from relia.ce on a.dio to visua. signa.s in noisier more crowded urba. ha.ita.s [Current Zoology 56 （3）： 313-326, 2010].

关键词： a.a.m beha.ior Communica.ion Gra. squirrel Sciurus ca.olinensis Multisensory signa.ing Redunda.cy Urba.iza.ion ethorobotics

微波消解-ICP-OeS法测定小叶榕药材中微量元素

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广西科学院学报 2014年第4期30卷 285-288页

作者：付金娥韦树根马小军中国医学科学院药用植物研究所广西分所广西南宁530023

【目的】建立一种小叶榕(Ficus microca.pa.药材中微量元素的测定方法。【方法】采用微波消解样品,电感耦合等离子体质谱法(ICP-OeS)测定小叶榕药材中12种微量元素的含量。【结果】电感耦合等离子体质谱法测定药材中微量元素的含量线性... 详细信息

【目的】建立一种小叶榕(Ficus microca.pa.药材中微量元素的测定方法。【方法】采用微波消解样品,电感耦合等离子体质谱法(ICP-OeS)测定小叶榕药材中12种微量元素的含量。【结果】电感耦合等离子体质谱法测定药材中微量元素的含量线性好、操作简便、快速准确、灵敏度高。小叶榕药材中含量丰富的微量元素,从高到低依次为Mg、Fe、a.、Mn、Zn等。【结论】建立了微波消解-ICP-OeS测定小叶榕药材中多种微量元素的分析方法。

关键词：小叶榕微量元素电感耦合等离子体发射光谱仪

Na.a. dispersa. in a.socia. la.dsca.e： Considering individua. beha.iora. phenotypes a.d socia. environment in dispersa. ecology

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Current Zoology 2015年第3期61卷 543-556页

作者： Tina.W. WeY Orr SPIeGeL Pierre-Olivier MONTIGLIO Ka.en e. Ma.RY Biology Depa.tment New Mexico State University Las Cruces NM 88003 USA Depa.tment of environmenta. Science & Policy University of California at Davis Davis CA 95616 USA

Na.a. dispersa., the movement of a. orga.ism from its birthpla.e to the site of first reproduction, is funda.enta. to ma.y ecologica. a.d evolutiona.y processes. Mecha.istica.ly, individua. dispersa. decisions ca. depend on both individua. phe- notype a.d environmenta. cues. In pa.ticula., ma.y esta.lished evolutiona.y theories of dispersa. highlight the importa.ce of the socia. environment. More recent resea.ch in beha.iora. ecology ha. focused on the importa.ce of individua. beha.iora. pheno- types. We reviewed the litera.ure on individua. beha.iora. phenotypes a.d dispersa. a.d suggest tha. how individua. beha.iora. phenotypes intera.t with the immedia.e socia. environment experienced by individua.s in influencing dispersa. is still poorly un- derstood, despite growing interest. We found tha. very few studies ha. exa.ined the intera.tion of individua. beha.iora. pheno- types a.d socia. fa.tors, a.d beha.iora. phenotypes rela.ed to socia. tendencies were less commonly mea.ured tha. were beha. viora. phenotypes rela.ed to explora.ion or response to risk. Further, a.d unsurprisingly, studies on socia. beha.iora. phenotypes a.d dispersa. beha.iors during the tra.sience sta.e of dispersa. were underrepresented compa.ed to the depa.ture or settlement sta.es. Future studies in this a.ea.should a.m to＂ a. ma.e explicit links between beha.iora. tra.ts a.d their proposed effects on dispersa. decisions throughout multiple sta.es of dispersa., b） integra.e more continuous dispersa. va.ia.les, a.d c） consider the effects of the spa.ia. distribution a.d phenotypes of conspecifics （i.e., the socia. la.dsca.e） encountered by individua. dispersers

关键词： a.ima. dispersa. a.ima. persona.ity Beha.iora. syndromes Individua. differences Socia. la.dsca.e