Adaptation is the heart and soul of evolution.

適應(yīng)是進(jìn)化的心臟和靈魂。

Some nonexistence results for p-degenerate sub-elliptic first order evolution inequalities associated with the generalized Baouendi-Grushin vector fields are given. The method is an improvement of the admissible function method in Euclidean space. The proof hardly depends on the properties of the generalized Baouendi-Grushin vector fields.

通過改進(jìn)歐氏的容許函數(shù)法人人鲁，應(yīng)用廣義Baouendi-Grushin向量場(chǎng)的一些性質(zhì)www.nlvnja.com，選取特殊的容許函數(shù)，利用Hlder不等式和Young不等式人人操人人摸在线，證明了由廣義Baouendi-Grushin向量場(chǎng)構(gòu)成的p-退化次橢圓一階發(fā)展不等方程久久久久亚洲AV无码专区电影，在適當(dāng)條件下非平凡弱解的不存在性。

It is important to learn origin, evolution, spread of adzuki bean through research genetic diversity of adzuki bean germplasm resources.

研究野生小豆種質(zhì)資源遺傳多樣性對(duì)了解小豆的起源毛毛黄色A片、演化和傳播途徑具有重要價(jià)值www,高潮,c0m。

The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

確定了粗粒土與結(jié)構(gòu)接觸面厚度約為5～6倍的平均粒徑，首次揭示了接觸面的細(xì)觀結(jié)構(gòu)異向性以及由此所引起的宏觀剪切異向性亚洲A级黄片在线，發(fā)現(xiàn)了在單調(diào)和往返剪切荷載作用下土顆粒破碎和剪切壓密兩種物態(tài)變化機(jī)制共同支配著接觸面力學(xué)性質(zhì)的變化天天舔，通過細(xì)觀分析證實(shí)了接觸面的變形可分解為一般同時(shí)發(fā)生的土與結(jié)構(gòu)交界面上的滑移變形以及結(jié)構(gòu)面位移約束范圍之內(nèi)土體本身的剪切變形兩部分，觀測(cè)到接觸面受剪時(shí)表現(xiàn)出明顯的相對(duì)法向位移18禁黄网站禁片无遮挡，并可分解為可逆性和不可逆性兩個(gè)分量超碰人人爆乳人人熟女超碰；(4)建立了第一個(gè)能夠統(tǒng)一地描述單調(diào)與往返剪切特性、剪應(yīng)變與體應(yīng)變耦合特性永久黄网站色视频免费大全91、細(xì)觀結(jié)構(gòu)和宏觀剪切異向性以及土顆粒破碎等物態(tài)變化特性的土與結(jié)構(gòu)接觸面彈塑性損傷本構(gòu)數(shù)學(xué)模型国产日韩在线播放观看小视频，并采用多種法向邊界條件復(fù)雜加載路徑的試驗(yàn)成果驗(yàn)證了新模型的合理性和有效性；(5)提出了新模型的二青青青草视、三維有限元格式并結(jié)合實(shí)際邊值問題進(jìn)行了應(yīng)用計(jì)算分析久久精品青春五月天综合网，比較了不同接觸面本構(gòu)模型對(duì)計(jì)算結(jié)果的影響国产在线视欧美亚综合，證實(shí)了新模型及其有限元格式不僅能夠合理地描述土與結(jié)構(gòu)接觸面的主要力學(xué)特性，還能夠較好地反映土體與結(jié)構(gòu)物在接觸面處的滑移国内免费合计自拍偷拍小视频、脫開等不連續(xù)現(xiàn)象。

During the process of long-time adaptive evolution, wetland plants adopted a series of special strategies to acclimate to salt stress. The main strategies are: 1 life history adjustment, e. g., to adjust seed germination time, implement seed dormancy and viviparity, and change reproductive manner to escape from direct salt stress, 2 morphological adjustment, e. g., to adjust biomass allocation pattern, age stem, defoliate, and carnify vegetative organs to isolate the redundant Na(superscript +) to the inactive-metabolism shoots or exclude the Na(superscript +)from tissues; 3 anatomic adjustment, e. g., to sink stoma, develop aerenchyma, and thicken cuticle and phellogen to maintain normal photosynthesis and respiration; 4 physiological and biochemical adjustment, e. g., to exclude and excrete salt, compartmentalize ions, adjust osmosis, do selective absorption, regulate hormones, and induce antioxidative enzymes to maintain the osmotic equilibrium and eliminate the active oxygen in cell; and 5 molecular level adjustment, e. g., to start up many salt-induced genes to regulate the metabolic responses to salt stress.

在長(zhǎng)期的適應(yīng)進(jìn)化過程中日本中文在线中文幕，濕地植物形成了多種適應(yīng)鹽脅迫的策略深夜在线观看网址，主要有：1生活史方面，植物可通過種子萌發(fā)時(shí)間的調(diào)整国产操老逼视频、種子體眠国产在线久、胎生、繁殖方式的改變等逃避鹽度的直接傷害黄片免费看3区；2形態(tài)學(xué)方面视频欧美日韩，植物可通過生物量分配模式的調(diào)整、莖的老化曰韩视频第一页、落葉及營(yíng)養(yǎng)器官的肉質(zhì)化等將多余的Na隔離到代謝不活躍的莖中或?qū)⑵渑懦鲶w外99黄色视频在线观看；3解剖學(xué)方面，植物可通過氣孔下陷亚洲欧美啊啊啊啊久久久、發(fā)達(dá)的通氣組織欧美一级A片免费不卡全部完曰久、增加細(xì)胞木栓層、角質(zhì)層及柵欄組織的厚度等以維持植物正常的光合作用和呼吸作用欧美操屄；4生理生化方面国产乱子伦牲交视频，植物可通過離子區(qū)隔化、拒鹽外国熟妇性交、泌鹽城中村嫖娼吊带、選擇性吸收、滲透調(diào)節(jié)免费看黄网址国产精品、激素調(diào)節(jié)及抗氧化物酶的誘導(dǎo)等來維持細(xì)胞內(nèi)正常的滲透壓日本黄色美女网站，清除胞內(nèi)活性氧分子；5分子水平方面性爱网址大全，植物可通過多種與鹽脅迫相關(guān)的基因來調(diào)控細(xì)胞內(nèi)的多種代謝反應(yīng)又黄又爽爽女性爽喷水视频。

The evolution of the aesthetic ideal of aestheticism in modern Chinese literature is closely related to Jiangnan culture.

從文化與文學(xué)的關(guān)系上來看，中國(guó)新文學(xué)唯美主義審美理想的生成日韩视频精品第一页在线观看网站，與江南文化有著內(nèi)在的關(guān)聯(lián)久久国产精品电影网。

Firstly, we calculate the Lie point symmetry of 1+2-dimensional nonlinear evolution equation:Which arises from the motion of plane curves in affine geometry.

我們首先計(jì)算了來自射影幾何的平面曲線運(yùn)動(dòng)的非線性發(fā)展方程：所容許的李點(diǎn)對(duì)稱群。

We concentrate on the different pronunciations of stop and affricative initials in MC and in today's Min dialect and conclude that the differences result from the overlapping of many phonetics levels during the evolution of Min dialect.

通過分析古全濁聲母中的塞音AV福利网站、塞擦音字在現(xiàn)代閩語的讀音異同嗷嗷喷水，結(jié)論認(rèn)為這是閩語自身演變的多種語音層次疊置的結(jié)果。

1The axial evolution law on the structure and the aerodynamic characteristics of the asymmetric flows around slender bodies of revolution at incidences is summarized:whether the flow asymmetry is powerless or powerful,the flow always appears in the structure that lee-side vortices rise,and shed vortices form,and new lee-side vortices come into being alternately on opposite sides of a slender body of revolution axially from nose apex downstream to afterbody,and always induces the sectional side force of waving quasi-sinusoidally downstream axially.

1總結(jié)出細(xì)長(zhǎng)旋成體有攻角非對(duì)稱繞流流場(chǎng)結(jié)構(gòu)和氣動(dòng)力特性的軸向演化規(guī)律：無論非對(duì)稱性強(qiáng)弱www.国产盗摄.com，沿軸向從頭部尖頂往后體日韩一区二区无码影视大全，非對(duì)稱繞流總是呈現(xiàn)為左国产无套视频在线观看AA在线、右兩側(cè)背渦交替從物面向上飄起、形成脫落渦麻豆国产香蕉久久精品、再衍生出新生背渦的流場(chǎng)結(jié)構(gòu)咬美女奶子舔她的逼视频，并誘導(dǎo)出沿軸向呈類似正弦曲線形式振蕩分布的截面?zhèn)认蛄Α?/p>

In chapter 2, we study how the circumburst environment influences the temporal evolution of the afterglow.

在第二章，我們以1998年5月19日發(fā)現(xiàn)的一個(gè)γ暴---GRB980519為例真人实拍AV在线播放，研究了γ暴暴周環(huán)境對(duì)余輝隨時(shí)間演化關(guān)系的影響18岁观看网站。