band sequence 中文意思是什麼

band sequence 解釋
譜帶序
  • band : n 1 帶，繩；帶形物；箍；箍條；嵌條；鑲邊；鋸條； 〈pl 〉 （法官等的）寬領帶。2 束縛，羈絆；義務；...
  • sequence : n 1 繼續；接續；連續。2 順序；程序；次第；關系；關聯。3 後果；結果；接著發生的事；後事；後文。4 ...
  1. The signal we named it fundamental wave ; according to the fundamental wave, coefficients of the fundamental wave can be lined in a sequence. when the unique of the dissolve of the fundamental wave can be confirmed, the sequence of the coefficients can be regarded as one of representation forms of the signal itself ; theory of dissolvable signal shows that when order of the matrix of fundamental wave sampling equals to number of fundamental waves, the sequence of the sampling values from sampling points must be matched one by one with the sequence of the coefficients of fundamental waves. the sampling composed by sequences of the sampling values must be full sampling ; the relevant deductions of the theory of dissolvable signal shows that when sampling the signal, sampling frequency must be lager than the ratio of the number of fundamental waves to the occupation time of the fundamental waves ; to band - limited signals, when the fundamental wave is a sine signal, the results from the relevant deductions of theory of dissolvable signal is coherent to the classic sampling theory

    本文通過分析認為，當信號集中的任一信號可表示為一系列已知信號的線性代數和時，信號集便構成可分解信號集，已知信號稱為基波信號；對可分解信號而言，基波系數構成一序列，當對指定的基波信號集分解唯一確定時，系數序列本身便是信號的一個表示；可分解信號采樣定理指出當基波樣值矩陣的秩等於基波數時，則由采樣點處的采樣樣構成的樣值序列必與基波系數序列一一對應，從而由該樣值序列構成的采樣必為完全采樣；可分解信號采樣定理中的推論指出，對信號集進行采樣，采樣頻率必須大於其信號分解的基波數與其對應時長之比；對有限帶寬信號，若基波信號為正弦信號時，由可分解信號采樣定理推論給出的結論與經典采樣定理一致。
  2. Strain bl21, and gene expression was induced by iptg. the target proteins were directed into the periplasmic space by the staphylococcal protein a signal sequence preceding the rgd - hirudin gene. using ion exchange chromatography and gel filtration chromatography, the chimera proteins were purified, and both of them showed a single band in tricine - sds - page. the results of activity analysis suggested that these two chimera proteins not only have antithrombin activities, but gain platelet aggregation inhibitory activities as well

    通過離子交換層析和凝膠過濾層分別對兩種嵌合體蛋白進行純化，純化產物在tricine - sds - page中都顯示為單一條帶。活性分析結果表明兩種嵌合體蛋白在保留水蛭素抗凝血酶活力的同時，還呈現抗血小板聚集活性。
  3. A novel communication receiver which uses lapped transform ( lt ) incorporating modified median filter ( mmf ) algorithm is designed for narrow - band interference excision. the lt domain mmf algorithm takes full advantages of the direct sequence spread spectrum signal, as well as the characteristics of lt, performing the transform domain filtering twice. the first filtering locates the position of interference and mitigates most of them. the second filtering is performed in a small neighborhood of the located interference. so lt domain mmf algorithm can completely mitigate the interference without distorting the desired signal. simulation results demonstrate the improved ber performance and increased robustness of our receiver

    本文採用改進的重疊變換域中值濾波演算法進行變換域抗干擾處理.該演算法既考慮到直接序列擴頻信號的特點，同時又利用重疊變換的特性對變換域系數進行了二次濾波.該演算法節省處理時間，並且不需要有關干擾的先驗知識，系統性能不會隨干擾頻率變化而變化，因而是一種很穩健的處理方法
  4. The hwtx - i gene was chemically synthesized according to its known cdna sequence, the gene was inserted into vector ppic9k which contained aoxj promotor and the sequence of a secreting signal peptide - a - factor, the cloning ppic9k / hwtx - i was constructed and confirmed by two - step pcr and dna sequence analysis, then it was transformed into host strain gs115, a his + muts cell line was screened and multicopy transformants were screened by various g418 concentrations, the multicopy transformant was named gh1. gh1 was cultivated in flasks. after 6 days of induction by 0. 5 % methanol, the supernatant was checked by 16. 5 % tricine - sds page, which showed there was a band in the position of 3. 5 - 6. 1kd, then it was isolated and desalted by ultrofiltration followed by ion exchange of cm column, after reverse phase hplc of ci8 and vacuum drying, the purified rhwtx - 1 was obtained which was proved to be correct recombinant hwtx - i by tricine sds - page, maldi - tof mass spectrometry, amino acid composition analysis, the n - terminal amino acid sequence and its biological activity, the final field of the purified rhwtx - i was about 80mg / l, accounting for 23. 6 % of it total secretory proteins

    將帶有hwtx -基因的ppic9k經blgii線性化后，轉化酵母宿主菌gs115原生質體后經篩選陽性克隆並經表型鑒定為his ~ + mut ~ s酵母菌，進一步用遺傳毒素g418篩選多拷貝的轉化菌株，命名為gh1 ；將gh1甲醇酵母菌用0 . 5的甲醇誘導表達，發酵上清經90飽和度的（ nh _ 4 ） _ 2so _ 4沉澱， yw - 3 （ mwc03000 ）的超濾膜超濾，再經cm陽離子交換， c _ （ 18 ）反相hplc純化得到分子量為4kd左右的組分，其中4289 . 05的組分經質譜鑒定，氨基酸組成分析和序列測定為正確的表達產物，生物學活性表明其活性為天然毒素活性70 % ，表達量為80mg / l 。
  5. This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller

    本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。
  6. This paper introduces the methods of hyperspectral images band selection based on the property of hyperspectral remote sensing images, utilizes the projection pursuit approach to find optimal solutions for a selected projection index based on dynamical evolutionary algorithm and then project a high dimensional data set into a low dimensional data space to produce a sequence of projection images, explores zero - detection method to threshold projection images to detect anomaly tar get

    摘要運用基於波段間相關性的高光譜影像波段選取方法進行波段的預選取，採用投影尋蹤的方法在動力演化演算法的基礎上尋找最佳投影方向，將高維數據投影至低維數據空間，在各投影分量圖像上採用零點檢測閾值化的方法進行異常目標的提取。
  7. Parallel structure of poly - phase decomposition and parallel mixer is applied in the ddc circuit, it solves the bottleneck in mixing and increases the handle speed. the partition of the tuning channel according to the digital mixing sequence, and the ddc by means of decimating first, the low - pass filtering and mixing realize efficiently the down - conversion of the variable carrier frequency band - pass signal. according to the structure of the ddc and the requirement of the frequency

    短數據快速測頻演算法的具體實現:使用并行流水線的設計方法，提高了系統的數據吞吐率，在100mhz的系統時鐘下，能夠實時處理400mhz ~ 600mhz速率a / d采樣的數據，在64點采樣， 100mhz系統時鐘情況下，初次測頻佔用時間640ns ，以後每次測頻佔用時間縮短到160ns ，實時地提供多相濾波下變頻所需的載頻位置信息，縮短了接收機的調諧時間。
  8. Filter poly - phase decomposition method is adopted in this dissertation. the partition of the tuning channel according to the digital mixing sequence, and the digital down - conversion by means of decimating first, the low - pass filtering and mixing realize efficiently the down - conversion of the variable carrier frequency band - pass signal

    本文採用濾波器多相分解方法，按數字混頻序列劃分調諧通道，使用先抽取，后低通濾波，再混頻的數字下變頻結構，高效實現了變載頻帶通信號數字下變頻。
  9. A pair of primers were designed and synthesized based on the published ge gene sequence of prv - rice strain for amplifying ge gene of prv min - a, yielding a 1. 7kb band. the segment was linked to puc19 plasma dna by means of t4 dna ligase, transformed into e. coli jm109 permissive cells, and incubated on lb fray containg amp, x - gal and iptg. small amount of plasma was extracted by base cleavaging for enzyme digest analysis and pcr, resulting in recombinant plasma puge dna containing prv ge

    用t _ 4dna連接酶使ge基因與經bamhi 、 kpni同樣雙酶切的puc19質粒dna連接；用連接產物轉化大腸桿菌jml09感受態細胞，置含amp 、 x - gal和iptg的lb平板上培養12 20小時；挑取白色菌落於選擇性培養基擴大培養，堿裂解法小量提取質粒dna ，並進行酶切分析鑒定，結果獲得整合有prvge基因的重組質粒pugedna ，並與其它prv分離株進行ge基因序列同源性分析。
  10. Aiming at the problem of intercepting the direct sequence spread spectrum communication signal, this paper makes full use of the wave characteristic of base - band signal after it is applied to shaping filter is made, and an algorithm which is based on the average power serial is given

    摘要針對直接序列擴頻通信信號的偵察問題，充分利用擴頻基帶信號發送成型濾波后的波形特點，提出了一種基於最大平均功率序列的演算法。
  11. We analyzed the anti - jam and band inside anti - interfere performance of the system, and the low probability intercept ( lpi ) of the traditional direct sequence spread spectrum ( dsss ) modulations in the uav platform ' s applications. so a new modulation technique using a multi - level pseudo noise ( pn ) code has been presented. the new multi - level pn code is built from a high speed pn code through a low passed filter ( lpf )

    分析了系統抗阻塞式干擾和抗帶內頻帶干擾的性能，以及常規bpsk qpsk - dsss調制在無人機通信中存在的安全隱患，提出了一種用多電平pn碼進行擴頻調制的方法：採用高速pn碼，經過低通濾波器，產生多電平pn碼進行直序擴頻調制，能在低信噪比情況下有效抵抗平方率檢測器對系統載波的檢測。
  12. The mrna and protein expression were assayed by rt - pcr and sds - page. the results were found that the specific 740bp dna bases of il - 6 was detected by rt - pcr in the recombinant bacteria and a new protein band was found in sds - page with molecular mass of about 49 kda which is consisted of a 23 kda protein deduced from the il - 6 gene sequence and gst ( 26 kda )

    以iptg誘導融合蛋白表達，經rt - pcr檢測發現740bp的特異性il - 6條帶；通過sds - page分析，在49kd處出現gst ? pil6融合蛋白條帶，其表達量占總細菌蛋白量的30 ，證明豬il - 6基因得到了正確轉錄和表達。
  13. Part two : studies ; l. the sox gene of dinodon refozonatum was amplified by using a pair of primers which can amplify the conservative motif ( hmg - box ) of human sry gene. the amplification band was observed in both male and female dinodon refozonatum, whose length was consistent with that of human sry gene, which about 220bp. the result of sscp analysis showed that there were many differences in the sox gene sequence between dinodon refozonatum and human, and there was a few differences between male and female dinodon refozonatum. 2. using a pair of degenerate primers based on the conservative region, hmg - box, of human sry gene, six different fragments were amplified from either female or male dinodon refozonatum, then cloned by using pmd18 - t vector and sequenced

    結果顯示： （ 1 ）赤鏈蛇基因的擴增片段與人sry基因擴增片斷大小相同，為220bp左右； （ 2 ）雌、雄赤鏈蛇sox基因的擴增片段大小雖然與人的相同，但其單鏈遷移率與人的有較大差異，而且雌雄個體間有明顯差異，預示該基因的dna序列在雌雄個體中可能有差異； 2 、參照人sry基因hmg - box保守區的序列，又設計一對兼并引物，擴增了赤鏈蛇的sox基因，並對擴增產物進行了克隆和測序。
  14. The technology of direct sequence spread spectrum / code division multipul access ( dsss / cdma ) are applied in the broadband code division multiplex wireless communication systems, which means transmitting data at the rate of 2. 048mbps using four e1 lines within the band of 20mhz. in this paper, the theory of the whole debice is first analysized specified for the system asic design and optimizing its performance

    寬帶碼分復用無線傳輸系統是採用直接序列擴頻/碼分多址（ dsss / cdma ）技術，在20mhz頻帶內實現四路2 . 048mbps的e1鏈路數據速率的無線傳輸。本文首先分析了整個數傳設備實現原理，針對系統asic設計和優化整機集成性能出發，提出並實現了基於fpga控制pm4314e1晶元的介面模塊完成對e1鏈路信號的監控和告警功能的改進方案。
  15. Results from hspice simulation and foundation show that the band - gap voltage reference of ic is 3. 126v, has a psrr of 65db, an accuracy of 23ppm / in [ 0, 70 ], and the band - pass filter has an gain of 73db, whose band - pass frequency is 0. 1hz ~ 10hz. comparator ’ s window is 700mv. time sequence and functions of digital circuits are normal

    Hspice和foundation軟體模擬的結果顯示，帶隙基準電壓源為3 . 126v ，電源電壓抑制比為65db ，溫度系數為23ppm / ;帶通濾波放大部分增益為73db ，帶通頻率為0 . 1hz ~ 10hz ;雙限電壓比較器窗口為700mv ，功能良好，數字電路時序正確，功能正常。
  16. The results were found that the specific 670bp dna bases of cgh was detected by rt - pcr in the recombinant bacteria and a new protein band was found in sds - page with molecular mass of about 50 kda which is consisted of a 23. 6 kda protein deduced from the cgh gene sequence and gst ( 26 kda )

    Rt - pcr分析確證重組質粒在大腸桿菌中能正確轉錄； sds - page分析證明誘導重組質粒表達了融合蛋白，分子量約為50kd ，與預期的26kd的gst帶和23 . 6kd的草魚生長激素基因編碼蛋白質構成的融合蛋白大小一致。
  17. Two specific primers were designed and synthesized based on the conservative sequence contrasted to drosophila and other species mt gene by computer retrieving, which were named primerl and primer2, the sequence of primer1 was : 5 " caa gtg aat cat ctc agt gc3 ", and that of primer2was : 5 " tgt aga gag aca aga tgc ag 3 ". rt - pcr technique was adoped to synthesizing the first - band of cdna, the second - band of cdna and expanding dna directly only by one step

    根據已發表的果蠅以及其它生物的mt基因的保守序列，通過計算機同源檢索比較，設計兩個擴增引物，命名為引物1和引物2 ，引物1的序列是： 5 』 caagtgaatcatctcagtgc3 』 ，引物2的序列是： 5 』 tgtagagagacaagatgcag3 』 。
  18. ( 2 ) a new digital frequency - hopping communication system based on cipher - quasi - chaotic sequence is proposed, which combines the cryptography and frequency - hopping technology. the system ' s protocol, base - band signal processing and modulation / demodulation algorithms of the radio - frequency part are designed, and the hardware experiment conducted on a prototype of the system show that the system functions well. the finite precision problem arising while taking use of chaotic signal to generate pseudo - random sequence is studied and the anti - tracking capability of the cipher - quasi - chaotic sequence is studied with the volterra - tls method proposed in this dissertation

    （ 2提出一種新的基於密碼準混飩序列的密碼與跳頻技術相結合的跳頻通信系統，並且進行了協議部分、拂信號處聊分、射頻調制解調演算法部分的模擬研究和系統的硬體實驗研究；研究了利用混飩信號產生偽隨機序列的有限精度實現問題，利用本文提出的m業肚m 113方法對密碼準混飩序列產生的跳頻碼的抗鵬干擾能力進行了模擬實驗研究。
  19. Sds - page and activity staining analysis revealed that all of clones 2, 5 and 9 exhibited a single active band with 83 - kd in size, whereas clone 3 exhibited four different bands with 64 kd, 70kd, 76kd and 83 kd after construcing a series of deleted subclones from the plasmid prepared from clone - 5, a complete nucleotide sequences comprising of 3, 205 bps wes determined. one open reading frame ( orf ) was found in this sequence, which was comprised of 2, 661 bps and could encode a polypeptide with 887 amino acid residues

    利用基因分析軟體genetyx對clone - 5質粒的核苷酸序列進行分析，並搜索日本dna數據庫（ dnadatabankofjapan ，簡稱ddbj ） ，推斷clone - 5質粒的幾丁質酶基因含有一個2 ， 261bp的開放閱讀框（ orf ） ，編碼一條887個氨基酸的幾丁質酶蛋白； orf上游有一個啟動子。
  20. The hardware design includes pl2101 power line node, realization of narrow - band interferences in direct sequence spread spectrum signal using frequency - domain algorithm

    其中硬體設計包括pl2101電力線節點、窄帶干擾自適應抑制系統的實現。
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