lt a lt b 中文意思是什麼

lt a lt b 解釋
字元串a值小於字元串b值
  • lt : x線斷層照相術
  • a : an 用在以母音音素開始的詞前〉 indefinite art 1 〈普通可數名詞第一次提到時，冠以不定冠詞主要表示類...
  • b :
  1. To dress the question if other virulence gene were present in this kind of strains, 152 of 436 irp2 - hybridized strains were re - confirmed and selected for this study. the virulence genes or putative virulence genes detected by pcr or hybridization include heat stable toxin ( st ) & heat labile toxin ( lt ) for enterotoxigenic e. coli ( etec ), invasive plasmid antigen b ( ipab ) for enteroinvasive e. coli ( eiec ), epec adherence factor ( eaf ), epec secretion protein c ( espc ) for enteropathogenic e. coli ( epec ), hemolysin ( hlya ) and shiga toxins ( sltl and slt2 ) for enterohaemorrhagic e. coli ( ehec ) and eaggec probe for entero - aggregative e. coli ( eaggec ). the prra and yc73 genes of pathogenicity associated island ( pai ) of urepathogenic e. coli ( upec ) and " o " island 28 ( rtx 615 ) gene was also detected, the later was a newly discovered putative pathogenicity island in e. coli o157 : h7

    為探討攜帶小腸結腸炎耶爾森氏菌的hpi毒力島的大腸桿菌是否具有其他已知的毒力基因，選取82株由原位雜交和pcr方法初篩irp2陽性的大腸桿菌菌株，進行在致瀉性大腸桿菌的25個毒力基因的檢測，包括腸產毒性大腸桿菌的熱穩定毒素st和熱不穩定毒素lt ，腸侵襲性大腸桿菌的侵襲蛋白b基因ipab ，腸致病性大腸桿菌的eaf 、 espc基因，腸出血性大腸桿菌的溶血素hly 、志賀毒素1 （ slt1 ） 、志賀毒素2 （ slt2 ）基因，腸集聚性大腸桿菌的eaggec探針，以及在泌尿道致病性大腸桿菌和o157 ： h7大腸桿菌中新發現的毒力島基因。
  2. Human bone morphogenetic protein 3 is a member of tgf - b superfamily. lt can induce the differentiation of cartilage and bone tissue in mesenchymal cell. and is important to bone self - repairment and bone development during embryo morphogenesis. in addition, some other biological activities of hbmp - 3 have also been found. such as inducing development of embryo and stimulating differentiation of neural and blood cells. therefore, there is a great prospect in the use of hbmp - 3. there is trace content of hbmp - 3 in human body. it has been expressed in the expression system of eukaryotes and prokaryotes respectively, but its application is restricted because of defects in the process and modification after translation in prokaryotic cells and higher costs and lower yields existed in eukaryotic expression system

    人骨形成蛋白3 （ hbmp - 3 ）屬于tgf -超家族的一員，可以誘導間充質細胞分化為軟骨和骨，在胚胎時期骨骼發育和骨再生修復中起著重要的作用，而且對胚胎發育過程中中胚層的誘導和分化、造血組織的發育以及神經系統的發育和修復等都起著重要作用，因而hbmp - 3有廣闊的市場前景。它在人體內含量極微，盡管研究人員已經在原核細胞和真核細胞表達系統中分別進行了表達，但是由於原核表達系統缺乏翻譯后的加工修飾，真核表達系統存在成本高、產量低等特點，限制了其在臨床上的應用。
  3. On [ a, b ] the product l = l2 lt of operator l { and l2 is selfadjoint if and only if 4

    討論一類兩個四階對稱微分算式生成的積運算元的自伴性； 4
  4. The second chapter includes two parts going into particulars of the relation between advanced b / l > antidated b / l dissension and trade contract. lt is a stipulation of the period of shippment or delivery in international trad contract and in credit contract. and the date of b / l signed is deemed to the date of shippment or delivery. it must accord with the credit contract

    第二章預借、倒簽提單糾紛與貿易合同關系，分兩部分詳細論述。國際貿易中一般都對賣方規定一個交貨期或付運期，並將這個日期相應地規定在信用證上，提單簽發日期被認為是裝船期和裝運期，這一日期必須是在信用證規定的裝運期內才是可以結匯的提單。
  5. Natural autoantibody ( naa ) refers to antibodies that are present in the surum of healthy individuals in the absence of deliberate immunization with the targeted antigen. previous studies have showed that human immunity system includes a huge and complicated autoantibody repetoire. to date, several hundred naa have been found and proved to exist in normal individuals, including autoantibody targeted rbc, mhc, dna, transferrin, keratin, diphosphatidyglycerd, idiotype of igg, etc. naa, characterized by binding to various and nonspecific antigen, reacting rapidly, keeping conservative relatively, has been widely claimed to be an important constituted component of innate immunity. lt was proposed that the production of naa was related to positive selection of b lymphocytes

    對naa的研究表明，健康人體免疫系統中存在著一個龐大而復雜的自身抗體網路。包括抗角蛋白自身抗體（ antikeratinautoantibody ， akautoab ）在內，迄今已經發現並證實的naa有數百種，如抗rbc 、 mhc 、 dna 、轉鐵蛋白、脂類和多糖的抗體以及jerne免疫調節網路中的抗獨特型抗體（ anti - idiotypeantibody ）等。由於個體出生即有naa ，且naa具有作用范圍廣、沒有特異的選擇性、反應出現快、有相對的穩定性等天然免疫的特點， naa被認為是天然免疫（ innateimmunity / naturalimmunity ）的重要組成部分。
  6. Objective the origin and the nature of the hodgkin and reed - sternberg ( h / rs ) cell of hodgkin ' s lymphoma ( hl ) has been attracting a lot of medical researchers engaged in studying it, for its character by scattered large atypical cells residing in a complex admixture of inflammatory cells. great improvement has been made since a new method of isolation of single h / rs cells from a frozen section had been set up by kuppers in 1994, and many studies have approved of the b - cell derivation of h / rs cell. lt has been reported that h / r - s cells might partly be originated from b - cell in our research before, but at the same time, we also found that only 18. 8 % of h / rs cells express cd20, 31. 3 % of immunoglobulin heavy chain ( igh ) rearrangement have been revealed

    目的霍奇金淋巴瘤（ hodgkin ' slymphoma ， hl ）由於它的惡性腫瘤細胞? h rs細胞一般只佔腫瘤組織的極少部分（不到1 ） ，且散在分佈在背景細胞間，因此對于h rs細胞的來源和性質研究一直是人們探索的目標。 1994年德國科隆大學k ppers等發展了一種從冰凍組織切片上用顯微操作儀挑取單個h rs細胞的顯微切割方法進行h rs細胞基因分析后，人們對h rs細胞來源的研究有了突破性的進展，多數支持b細胞來源。我們的前期研究也支持部分h rs細胞為b細胞來源，但我們發現只有18 . 8的h rs細胞表達cd20 ， 31 . 3的hl檢測到igh基因重排克隆性條帶。
  7. The third chapter including four part expounding the relation between delivery cargo without presentation b / l dissension and trade contract. lt is a legal duty of carrier to delivery cargo against presentation b / l. the first part analyses the cause of delivery cargo without presentation b / l and delivery cargo without presentation b / l dissension ; the second part discusses how risk carrier will be suffered at delivery goods without presentation b / l ; the third part simply review the attitude of our national justice practice to delivery goods without presentation b / l dissension ; the fourthly part generalize several kinds of the carrier not take responsibility on basis of learning theory and national inside and outside prejudication, incorporation trade factor

    憑正本提單交貨是承運人的一項法另義務，第一部分分析了無單放貨的原因及無單放貨糾紛產生的原因；第二部分論述了承運人在無單放貨中所承擔的風險；第三部分簡單回顧我國司法實踐對無單放貨糾紛案件中承運人責任所持態度的演變；第四部分從學術理論到國內外判例，結合貿易因素，概括了承運人不承擔無單放貨責任的幾種情形。
  8. The first chapter includes two parts going into particulars of the relation between note - made b / l dissension and trade contract. lt require that the seller delivery cleanness b / l to buyer in international trade. unless have got in particular promise. and bank refuse to accept not cleanness b / l, as a result. seller usually demand carrier sign cleanness b / l in international trade

    應考慮並結合貿易因素去判決承運人在提單糾紛中的責任。第一章提單批註糾紛與貿易合同關系，分兩部分詳細闡述。國際貿易中，除非有特別約定，往往要求賣方提供清潔提單，不清潔提單是不被銀行所接受的。
  9. And the two pah ' s of pcr primers that bind to the adapter and the sequence of f fragment close by tn5 respectively were also designed. the genomic dna of b8 was isolated, digested with bamh i, and ligated to the adapter. using the two pairs of the primers, two rounds of pcr were performed hi turn and a fragment of 239bp was amplified successfully. lt was proved by cloning and sequencing that 18bp of the fragment is the sequence opposite to f fragment on the left of tn5 insertion site in b8f, the other is part of the 728 bp of f fragment. this result makes it possible to continue to carry out chromosome walking, to clone and sequence the whole genes of b fragment and f fragment, and to reveal the antagonistic molecular mechanism of b8

    試驗研究設計併合成了由40和44個堿基的寡聚脫氧核苷酸組成的染色體爬行接頭，在接頭序列和測定的f片段近tn5的序列上，設計了2對染色體爬行用的pcr引物，從b8菌株中提取基因組dna ， bamhi酶切，與染色體爬行接頭連接，依次用2對引物進行pcr ，擴增出239bp產物，經克隆、測序，發現其中18bp為擴增的相應于f片段在b8f菌株tn5插入位點對面的序列，其餘則為f片段728bp序列的一部分，為進一步進行染色體爬行，克隆和測定整個b和f基因，揭示陽菌株的拮抗分子機制提供了技術資料貯備。
  10. Fde and dde have been extensively developed since 1959, and each branch has been set up a complete theory system. now, more and more scholars study fde and explore further developments. also, fde with infinite delay is one of the fields of great interest to people. in fact, fde with infinite delay has undergone a rapid development since 1870s. hale and kato gave a normal and set up the b phase space theory in 1978. under the basic theory, people studied the stability, boundedness and periodic solution of rfde. for example : in [ 4 ], huang qichang introduced the concept of uniformly forgetful functional, discussed the boundedness and stability of solution ; [ 5 ] - [ 8 ] discussed the existence of periodic solutions, generalized the results of rfde with finite delay. however, for nfde with infinite delay, few people discuss it, and many problems have not been solved. so there are some very interesting developments. lt is worth while generalizing the results of fde with fini te delay or rfde with infinite delay to nfde with infinite delay. because of the difficulty of infinite delay, we may discuss neutral volterra integro - differential equations, and obtain simple results

    自1959年以來，無論是一般的泛函微分方程還是具體的微分差分方程，其發展是非常迅速的，在每一分支中都形成了一套完整的理論體系，如今越來越多的學者涉足這一領域探求更新的發展，無窮時滯泛函微分方程就是他們研究的主要對象之一。準確地說，無窮時滯泛函微分方程興起於19世紀七十年代， 1978年hale與kato提出b空間的公理體系。在此體系下建立了方程的基本理論，並研究了解的穩定性、有界性、周期解等問題，如[ 4 ]利用一致健忘的liapunov泛函討論了解的有界性和穩定性， [ 5 ] - [ 8 ]討論了周期解的存在性，推廣了有限時滯的相關結果。
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