positive contraction 中文意思是什麼
positive contraction
解釋
主動收縮- positive : adj 1 確實的，明確的；確定的；無條件的 （opp qualified implied inferential）; 絕對的，無疑問的，...
- contraction : n 1 縮短，收縮；【醫學】攣縮。2 （開支等）縮減；收斂，狹窄；縮度。3 【語法】縮略〈如將 never 略成...
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Sufficient conditions are obtained for the existence of bounded positive solutions of the n - order delay differential equations with nonlinear neutral term, on the basis of lebesgue ' s monotone convergence theorem and banach contraction theorem
摘要利用控制收斂定理和壓縮映射原理研究了一類具非線性中立項時滯微分方程有界正解的存在性，獲得了其存在有界正解的充分條件。 -
According to the theory of continuous - time markov chains, given a g - matrix q, it is possible that there exist infinite transition functions and therefore there maybe exist infinite positive contraction semigroups ( co semigroups ) on l1 derived from q - matrix q. but each positive contraction semigroup has and only has one infinitesimal generator
給定一個q -矩陣q ，可能存在無窮多個轉移函數，從而在l1空間上可能有無窮多個正的壓縮半群（ c _ 0半群）與之對應，而每個正的壓縮半群有且僅有一個無窮小生成元。 -
After electrophorised on 1 % agarose gel, the pcr production was purified with agarose gel dna extraction kit. the segment was ligated with vector pmd18 - t and then was tranformed into the competent cell of dh5 a. a construction mstnd - pmd18t was generated by inserting the sequence of 254bp into pmd18 - t vector and selecting the sense clones. positive clone was identified by three ways : endonuclease digestion, pcr and sequencing. the result showed that the cloned sequence coincides with the designed sequence. this construction was digested with nco i and xho i and ligated the pet28a ( + ) vector digested with the same enzymes using dna ligation kit. the production of ligation reaction was transformed into the competent cell of bl21 ( de3 ). after 12 - 16 hours of culture, several colnes appeared on the plate. some positive clones were selected to extract their plasmid. these plasmids were digested by nco i and xho i and indentified by pcr. a contraction, mstnd - pet28a was generated. the result showed that the cloned sequence coincides with the designed sequence
F _ 1長38bp ， r _ 1長36bp ，其它片段均40bp長， f _ 1和r _ 1片段兩端分別加上限制性內切酶nco和xho的識別位點序列。用成對單鏈片段進行延伸反應，然後用其他單鏈片段作為引物，進行pcr擴增，用dna快速純化回收試劑盒回收所得254bppcr產物，與pmd18 - t載體連接、轉化dh _ 5 。受體菌感受態細胞，利用藍白斑遺傳學篩選法篩選陽性克隆，提取其質粒，採用nco和xho雙酶切鑒定，獲得了254bp的片段；用pmd18 - t載體上的特異引物rv - m和m13 - 47進行pcr鑒定，獲得300bp的片段。 -
In a contraction, positive work is done on the system.
在壓縮過程中，對體系作正功。 -
On the other hand, a positive inotropic response was induced by il - 2 in isolated rat atria, indirectly by activating myocardial 3 - adrenoceptors by release of catecholamines, and directly by increasing the production of second messenger camp. in the isolated rat heart, stimulation of cardiac k opioid receptors has been shown to induce ventricular ectopic beats and to reduce the force of ventricular contraction
通過文獻調研和我們的預實驗，我們假設， il - 2的心臟作用涉及心肌細胞收縮力和細胞內鈣的變化，其信號轉導途徑可能並非通過自身受體，而是通過存在於心肌細胞膜上的阿片受體發揮作用的；其對血管的作用可能循相關途徑。 -
It is natural to ask the following question : what relationship is between g - matrix q and the infinitesimal generators of the positive contraction semigroups derived from g - matrix q
人們自然會提出如下問題： q -矩陣q與這些正的壓縮半群的生成元之間有什麼關系呢
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