1Niche construction can lead to stable coexistence of diverse genotypes in spatially structured population, which supports a stable polymorphism even without heterozygote superiority.(2)With habitat deterioration, niche construction accelerates the formation of steady polymorphism and hence impedes the harmful influences of environment on the population, which might embody a life-history strategy of organism under the unfavorable environment.(3)Niche construction results in the coexistence with alternative polymorphism through genotype-environment feedback and limited gene flow.(4)The niche-constructing organism is an active force to alter its environment and hence the direction of natural selection in order to better survival.(5)Spatial dynamics and distribution pattern of metapopulation are profoundly influenced by time-lagged niche construction.(6)Metapopulation size can reach a fixed level in the recency effect and equal weighting of time lag but is statistical stability in primacy effect, which implies the primacy effect is most remarkable.(7)The increment in the relative weightingof each generation\' niche construction and the length of time lag are significant factors for system destabilization.(8)Moderate capacity of positive niche construction benefits the metapopulation persistence.(9)The narrowing of niche breadth can decrease the metapopulation size and thereby increase the extinction risk.(10)The coupled function of time lag and niche construction make the system oscillation and generate the spiral wave, spiral-broken and circular wave in heterogeneous habitat.The spatial distributions of metapopulation and resource content are complementary due to a phase lag of their both frequencies.(12)Metapopulation persistence with niche construction depends not only on the balance between colonization and extinction, but also on the balance between the ability of niche construction and natural dissipation of habitat.(13)Metapopula-tion can survive under certain condition when the percent of suitable patches in habitat is lower than the ration of extinction to colonization.(14)Two thresholds exist in the process of transition of habitat quality dynamics from unsuitable to suitable, which include the intensity of niche construction and the initial condition of system.(15)Metapopulation size is positive correlated with the ability of positive niche construction, which means that organism or population who has strongly positive influences on their environment plays an important role to maintain the available habitat.

通過上述幾個(gè)方面的研究免费看一级a片网站，主要得出以下15條結(jié)論：(1)生態(tài)位構(gòu)建可使空間結(jié)構(gòu)種群黑人国产在线，甚至是在沒有雜合子優(yōu)勢的條件下，形成多種可能的穩(wěn)定基因型分布模式；(2)隨著環(huán)境的破壞與惡化黄业网站在线免费观看，種群的生態(tài)位構(gòu)建作用加速其較早形成穩(wěn)定多態(tài)以阻礙環(huán)境對種群的不利影響柚木在线无码视频精品，解釋了有機(jī)體在不利環(huán)境下的一種生活史對策；(3)生態(tài)位構(gòu)建作用通過基因型—環(huán)境反饋機(jī)制及有限的基因交流導(dǎo)致基因型多態(tài)的穩(wěn)定共存日韩视频05；(4)有機(jī)體的生態(tài)位構(gòu)建作用是一種積極的動(dòng)力改變環(huán)境進(jìn)而改變其自然選擇的方向精品人人；(5)生態(tài)位構(gòu)建的時(shí)滯作用對集合種群動(dòng)態(tài)和空間分布產(chǎn)生深刻影響；(6)集合種群大小在時(shí)滯的嶄新效應(yīng)和等權(quán)重效應(yīng)下達(dá)到一固定值yy6080新觉伦AA午夜视频伊人，而在首位效應(yīng)下達(dá)到統(tǒng)計(jì)穩(wěn)定欧美a日本在线一，表明首位效應(yīng)的影響最顯著；(7)首位效應(yīng)下生態(tài)位構(gòu)建相對權(quán)重的增量和時(shí)滯的長度是影響系統(tǒng)不穩(wěn)定性動(dòng)態(tài)的關(guān)鍵因素A片AA；(8)適中的生態(tài)位構(gòu)建強(qiáng)度有利于集合種群的續(xù)存91网免费在线观看；(9)生態(tài)位寬度變窄會(huì)減少集合種群的數(shù)量從而增加其滅絕風(fēng)險(xiǎn)；(10)時(shí)滯和生態(tài)位構(gòu)建的雙重作用使系統(tǒng)產(chǎn)生周期振蕩在线观看自拍日韩欧美视频网站大全，并在異質(zhì)性環(huán)境中產(chǎn)生穩(wěn)定的螺旋波91最新视频网址，破碎的螺旋波和環(huán)形波三種分布模式；(11)集合種群與資源含量的空間分布因?yàn)橄鄿パa(bǔ)欧美又大又粗；(12)具有生態(tài)位構(gòu)建的集合種群續(xù)存不僅取決于侵占率與滅絕率之間的平衡，而且依賴于生態(tài)位構(gòu)建能力同其生境的自然消耗速率之間的妥協(xié)宾馆色哟哟；(13)當(dāng)生境中適合侵占的斑塊比例小于其侵占率與滅絕率之比時(shí)欧美粗吊，生態(tài)位構(gòu)建作用促使集合種群在一定條件下續(xù)存：(14)生境斑塊的狀態(tài)從不適合到適合轉(zhuǎn)變過程中存在生態(tài)位構(gòu)建強(qiáng)度和系統(tǒng)初始條件這兩個(gè)閾值；(15)集合種群的大小同正生態(tài)位構(gòu)建能力正相關(guān)插逼视频免费黄片，意味著對環(huán)境具有較強(qiáng)正作用的有機(jī)體對維持有效生境起積極作用欧美日韩在线观看二区视频。

Finally,we study meson mixing in asymmetric nuclear matter with spontaneous breaking of isospin symmetry in the framework of two flavor NJL model.

最后，我們在兩味NJL模型的框架下研究了非對稱核物質(zhì)體系在同位旋對稱性自發(fā)破缺時(shí)的介子混合現(xiàn)象亚洲日韩一区在线。

For the first time, we studied isospin effects on the two particle correlation functions, the light particle multiplicity and their ratio in HIC''s at intermediate energies, and find they are sensitive probes for the density dependence of the symmetry energy.

在國際上首次研究了重離子碰撞中兩核子關(guān)聯(lián)函數(shù)和輕粒子產(chǎn)生的多重性及比率的同位旋效應(yīng)麻豆黄大色黄大片女爽一次，發(fā)現(xiàn)它們敏感于核物質(zhì)對稱能的密度相關(guān)性。

After adding isospin dependent high order correction terms to existing relativistic mean field models, the density dependence of symmetry energy and the neutron skin thickness S for 208Pb are studied.

在現(xiàn)有的平均場模型中引入同位旋相關(guān)的高階修正項(xiàng)国产a视频精品免费观看，研究了核物質(zhì)對稱能的密度依賴性和208Pb的中子皮厚度男人网站。

The complexing properties of compounds 10a, 10b, 11a and 11b toward alkali metal ions were studied by 〓H NMR titration, ESI-MS, UV-Vis spectra, Fluoresence spectra and liquid-liquid extraction. The results show:(1) the 1:1 complexes were formed.(2) The calix-crown 10a, 11a have a higher selectivity for Na〓 ions, whereas 10b, 11b for K〓 ions.(3) The complexing ability toward alkali metal ions was enhanced when the calix-crown have side arm carbonyl.(3) The coordination of alkali metal ions toward phenoxy, carbonyl and crown ethereal oxygens take place by rotation around the carbon-carbon bond of carbonyl and methylene.

六，用〓H NMR滴定色阁视频一区在线视频，ESI-MS欧美一级裸体视频,免费看，UV-Vis，F(xiàn)luorescence插的爽视频，液-液萃取實(shí)驗(yàn)研究了10a黄视频网站在线看，10b，11a和11b對金屬離子的配位性質(zhì)又粗又黑欧美硬大视频，研究結(jié)果表明：1）杯芳烴冠醚衍生物同堿金屬離子形成了1：1配合物天天一级欧美，化合物10a、11a對Na〓具有較高的配位能力免费一级无码淫片AA片，化合物10b无码理论在线观看、11b對K〓具有較高的配位能力免费看乱女伦一级A片；2）在杯冠醚環(huán)的旁邊引入帶有羰基氧原子的基團(tuán)作為側(cè)臂參與配位可以加強(qiáng)對堿金屬離子的配位能力；3）金屬離子分別同苯酚氧国产福利最新，羰基氧先锋每日资源涩涩，聚氧醚鏈氧發(fā)生了配位，配位過程中側(cè)鏈基團(tuán)涉及到了羰基碳與亞甲基碳的碳碳鍵的旋轉(zhuǎn)過程欧美淫秽。

We studied the densities of superheavy nuclei with the Skyrme-Hartree-Fock model.

用Skyrme-Hartree-Fock模型計(jì)算了超重核的密度分布久操视视频一区二区，并討論了其形狀和同位旋相關(guān)性。

However, the helium isotope analysis data are quite different between them. The abnormal of helium isotope made sure of extraterrestrial origin of iron cosmic spherules.

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The square wave anodic stripping voltammetric methodology using a screen printed carbon electrode in situ plated in mercury was developed by the authors to determine lead in tea.

建立了同位鍍汞法修飾的絲網(wǎng)印刷碳電極電化學(xué)方波溶出伏安法快速檢測茶葉中的鉛的方法。

Two test pieces with satin surface and rib surface were designed under conditions of different distribution of heat flow density and different air flux.

流場計(jì)算中亚洲皇冠成人无码影院在线观看，采用同位網(wǎng)格上的SIMPLER算法和低雷諾數(shù)κ-ε湍流模型igao国产，對流擴(kuò)散項(xiàng)采用SMART格式離散；溫度場計(jì)算中采用整場離散亚洲人成亚洲精品，整場求解国产原创同事在线视频。

Ironing shir ts 與 a place 同位 The first plan, attacking at night, was turned down.

第一個(gè)計(jì)劃是夜襲，被拒絕了青青国产在线视频。