上海同田生物對照品
—同田標準 行業(yè)標準中文名:‘2-O-沒食子;鸾z桃苷’
英文名:2-O-galloylhyperin
分子式:C28H24O16
分子量:616.48
CAS號: 53209-27-1
純度: >98%
產(chǎn)品編號:E-0476
‘2-O-沒食子酰基金絲桃苷2-O-galloylhyperin’隨貨附HPLC檢測報告,10mg每支標準裝,部分可提供C、H 譜圖,歡迎大家來電來函。聯(lián)系電話:021-51320588-8008 /400 820 3059 /13818494109/13381604842/email:sales2@tautobiotech.com特色優(yōu)勢: 1. 國內(nèi)對照品行業(yè)領(lǐng)導(dǎo)者,長達13年對照品的專業(yè)研發(fā)及標準制定 2. 高效穩(wěn)定的專利純化技術(shù)-高速逆流色譜技術(shù)的運用 3. 特有的高速逆流色譜對照品研發(fā)中心及生產(chǎn)中心,保證對照品的質(zhì)量可控性及批量生產(chǎn)的穩(wěn)定性 4. 嚴格的質(zhì)量控制,通過全面的檢測(1HNMR 13CNMR MS HPLC) 5. 部分對照品已獲得國家質(zhì)量監(jiān)督檢驗檢疫總局頒發(fā)的標準物質(zhì)證書 6. 完善的庫存及供應(yīng)體系,所有產(chǎn)品均能現(xiàn)貨供應(yīng) 7. 高效的銷售團隊,99%的咨詢可即時回復(fù) 8. 已在瑞士、新加坡、泰國、韓國、比利時、西班牙等十三個國家設(shè)立代理商
ISO 9001: 2000 質(zhì)量管理體系認證,產(chǎn)品種類近3000種
‘2-O-沒食子;鸾z桃苷2-O-galloylhyperin’
http://www.tautobiotech.com/BRM/ProductShow.asp?ArticleID=786
深圳嘉典盛自動化有限公司主要產(chǎn)品為可程式控制器(PLC)、遠端輸出/輸入模組(RTU)、工業(yè)電腦(IPC).經(jīng)營品牌:三菱、歐姆龍,艾默生
Synonyms | Listeriolysin-O, LLO, hlyA. |
Introduction | Listeriolysin O (aka LLO) is a hemolysin produced by Listeria monocytogenes bacteria, the pathogen responsible for causing listeriosis. The toxin may be regarded as a virulence factor, since it is crucial for the virulence of L. monocytogenes. LLO is a single polypeptide protein encoded by the hlyA gene and composed of 529 residues. LLO is a thiol-activated cholesterol-dependent pore forming toxin protein; therefore, it is activated by reducing agents and inhibited by oxidizing agents. Still, LLO differs from other thiol-activated toxins, as its cytolytic activity is maximized at a pH of 5.5. Inside the acidic phagosomes (average pH ~ 5.9) of cells that have phagocytosed L. monocytogenes, LLO is selectively activated by maximizing activity at a pH of 5.5. Following the phagosome lysis by LLO, the bacterium breaks out into the cytosol, where it is able to grow intracellularly, and the toxin has reduced activity in the more basic cytosol. Thus, LLO permits L. monocytogenes to break out from the phagosomes into the cytosol without harming the plasma membrane of the infected cell, which allows the bacteria to live intracellularly, where they are sheltered from extracellular immune system factors such as the complement system and antibodies. LLO also brings about dephosphorylation of histone H3 and deacetylation of histone H4 in the early phases of infection, before entry of L. monocytogenes into the host cell. The pore-forming activity is not implicated in causing the histone modifications. The modifications of the histones affect the down regulation of genes encoding proteins involved in the inflammatory response. Therefore, LLO may be significant in subverting the host immune response to L. monocytogenes. At its NH2-terminus it possesses a 25 residues long typical signal sequence excited during the secretion process. Moreover, in its NH2-terminus there is also a 19 amino acids PEST- like sequence that may target this toxin for degradation. The PEST-like sequence found in LLO and is considered crucial for virulence, given that mutants lacking the sequence lysed the host cell. Nevertheless, contrary to PEST's supposed role in protein degradation, evidence implies that the PEST-like sequence may control LLO production in the cytosol rather than increase degradation of LLO. |
Description | Molecular weight of Listeriolysin O is 58kDa. This haemolysin protein is provided in its mature form that is constituted by 503 amino acids, from 26 to 529 of the registered sequence (accession number: AAF64524). |
Source | Escherichia Coli. |
Physical Appearance | Sterile Filtered clear solution. |
Formulation | The protein contains 50mM NaH2PO4, 1mM EDTA, 2.7mM KCl, 1mM DTT, 5% glycerol and 0.5M NaCl. |
Stability | LLO although stable at room temperature for 1 week, should be stored desiccated below -18°C. Please prevent freeze-thaw cycles. |
Purity | Greater than 90.0% as determined by(a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE. |
Activity | LLO has a hemolytic activity 1.25x106 HU/mg. 2mM DTT is used to reactivate the toxin. |
Applications | a. Cytosolic delivery of molecules, peptides, oligonucleodides and plasmid DNA (4). b. Production of specific monoclonal antibodies (5). c. Detection of anti-listeriolysin O antibodies (6). |
Usage | Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals. |
型號 | 儀器尺寸(mm) | 清洗槽內(nèi)尺寸(mm) | 容量 | 超聲頻率 | 超聲功率 | 加熱功率 | 時間可調(diào) |
| 長×寬×高 | 長×寬×高 | L | (KH) | (W) | (W) | (min) |
KQ116 | 223×114×123 | 167×90×52 | 0.6 | 40 | 50 | 無 | 10 |
KQ118 | 223×114×123 | 167×90×52 | 0.6 | 40 | 70 | 無 | 10 |
KQ218 | 223×114×123 | 167×90×52 | 0.6 | 40 | 100 | 無 | 10 |
KQ-50 | ф145×210 | ф140×100 | 1.5 | 40 | 50 | 無 | 無 |
KQ-50B | 170×160×210 | 150×140×100 | 2 | 40 | 50 | 無 | 1-20 |
KQ-50E | 208×192×210 | 150×140×100 | 2 | 40 | 50 | 100 | 1-20 |
KQ2200 | 260×160×260 | 230×140×100 | 3 | 40 | 100 | 無 | 1-20 |
KQ2200B | 260×160×260 | 230×140×100 | 3 | 40 | 100 | 200 | 1-20 |
KQ2200E | 260×160×280 | 230×140×100 | 3 | 40 | 100 | 200 | 1-20 |
KQ2200V | 340×250×330 | 230×140×130 | 4 | 40 | 100 | 200 | 1-20 |
KQ-100 | 320×174×260 | 300×150×100 | 4 | 40 | 100 | 無 | 1-20 |
KQ-100B | 320×174×260 | 300×150×100 | 4 | 40 | 100 | 400 | 1-20 |
KQ-100E | 320×174×280 | 300×150×100 | 4 | 40 | 100 | 400 | 1-20 |
KQ-100V | 410×260×330 | 300×150×130 | 5.8 | 40 | 100 | 400 | 1-20 |
KQ3200 | 320×174×320 | 300×150×150 | 6 | 40 | 150 | 無 | 1-20 |
KQ3200B | 320×174×320 | 300×150×150 | 6 | 40 | 150 | 400 | 1-20 |
KQ3200E | 320×264×340 | 300×150×150 | 6 | 40 | 150 | 400 | 1-20 |
KQ3200V | 410×260×380 | 300×150×180 | 8 | 40 | 150 | 400 | 1-20 |
KQ5200 | 320×264×320 | 300×240×150 | 10 | 40 | 200 | 無 | 1-20 |
KQ5200B | 320×264×320 | 300×240×150 | 10 | 40 | 200 | 400 | 1-20 |
KQ5200E | 320×264×340 | 300×240×150 | 10 | 40 | 200 | 400 | 1-20 |
KQ5200V | 410×350×380 | 300×240×180 | 13 | 40 | 200 | 400 | 1-20 |
KQ-250 | 320×264×320 | 300×240×150 | 10 | 40 | 250 | 無 | 1-20 |
KQ-250B | 320×264×320 | 300×240×150 | 10 | 40 | 250 | 400 | 1-20 |
KQ-250E | 320×264×340 | 300×240×150 | 10 | 40 | 250 | 400 | 1-20 |
KQ-250V | 410×350×380 | 300×240×180 | 13 | 40 | 250 | 400 | 1-20 |
KQ-300 | 320×264×320 | 300×240×150 | 10 | 40 | 300 | 無 | 1-20 |
KQ-300B | 320×264×320 | 300×240×150 | 10 | 40 | 300 | 400 | 1-20 |
KQ-300E | 320×264×340 | 300×240×150 | 10 | 40 | 300 | 400 | 1-20 |
KQ-300V | 410×350×380 | 300×240×180 | 13 | 40 | 300 | 400 | 1-20 |
KQ-500 | 530×320×360 | 500×300×150 | 22.5 | 40 | 500 | 無 | 1-20 |
KQ-500B | 530×320×360 | 500×300×150 | 22.5 | 40 | 500 | 800 | 1-20 |
KQ-500E | 530×320×380 | 500×300×150 | 22.5 | 40 | 500 | 800 | 1-20 |
KQ-500V | 610×410×380 | 500×300×180 | 27 | 40 | 500 | 800 | 1-20 |
KQ-600 | 530×320×360 | 500×300×150 | 22.5 | 40 | 600 | 無 | 1-20 |
KQ-600B | 530×320×360 | 500×300×150 | 22.5 | 40 | 600 | 800 | 1-20 |
KQ-600E | 530×320×380 | 500×300×150 | 22.5 | 40 | 600 | 800 | 1-20 |
KQ-600V | 610×410×380 | 500×300×180 | 27 | 40 | 600 | 800 | 1-20 |
KQ-700 | 530×320×360 | 500×300×150 | 22.5 | 40 | 700 | 無 | 1-20 |
KQ-700B | 530×320×360 | 500×300×150 | 22.5 | 40 | 700 | 800 | 1-20 |
KQ-700E | 530×320×380 | 500×300×150 | 22.5 | 40 | 700 | 800 | 1-20 |
KQ-700V | 610×410×380 | 500×300×180 | 27 | 40 | 700 | 800 | 1-20 |
------主要特點------ |
開關(guān)選擇交流輸入電壓范圍有短路保護/過載保護/過電壓保護/高溫保護國際安規(guī)認證:UL/CUL90KHz固定開關(guān)頻率由內(nèi)置直流風(fēng)扇強制通風(fēng)冷卻自動控制開關(guān)強制通風(fēng)冷卻100%滿載老化測試2年質(zhì)保 ------主要指標------
交流輸入電壓 | ..........開關(guān)選擇88~132VAC/176~264VAC |
交流沖擊電流 | ..........冷啟動,115V時為15A/230V時為30A |
直流調(diào)整范圍 | ..........額定輸出電壓的±10% |
過載保護 | ..........過電流點在105%~150%時斷開,自動偵測,自動復(fù)原 |
過電壓保護點 | ..........額定輸出電壓的115%~135%時動作 |
初始化、上升、保持時間 | ..........230VAC滿載時2000ms,20ms,20ms |
絕緣特性 | ..........輸入端與輸出端間:3KVAC,輸入端與外殼間:1.5KVAC1分鐘 |
工作時環(huán)境溫度 | ..........0~40℃可滿載,-10℃時降載20%,60℃時降載40% (24V&48V 0~50℃可滿載, 60℃時降載40%) |
國際安規(guī)認證 | ..........通過UL60950-1認證 |
接線方式 | ..........9P/9.5mm帶蓋端子排 |
機殼型號 | ..........912 |
外形尺寸 | ..........215×115×50 mm |
重量及包裝 | ..........1.15公斤/只;每箱12只/15公斤/0.0283立方米 |
大量TBI螺母,滾珠絲桿,現(xiàn)貨供應(yīng),SFI3205,型號齊全
紅外測溫儀GM320
GM320生產(chǎn)廠家;深圳標智,GM320供應(yīng)商;九九儀器公司。
GM320供應(yīng)地址;深圳市龍華新區(qū) 民治 銀泉花園8棟105
GM320聯(lián)系人;金小姐 電話13129540276,QQ2317875228。
*測量范圍:-50 ~ 330℃ (-58~626℉)
*精確度:±1.5% or ±1.5℃
*重復(fù)性:±1% or ±1℃
*物距比:12:1
*發(fā)射率:0.95預(yù)設(shè)
*分辨率:0.1℃/℉
*響應(yīng)時間:500毫秒
*響應(yīng)波長:8-14μm
*℃/℉溫度單位轉(zhuǎn)換
*數(shù)據(jù)保持顯示
*定位激光開/關(guān)選擇
*LCD背光開/關(guān)選擇
*自動關(guān)機
*電源:2*1.5V AAA電池
*產(chǎn)品凈重:115.1克(含電池)
*產(chǎn)品尺寸:144.5*38*93厘米
*包裝方式:吸塑+卡紙
冷卻塔是集空氣動力學(xué)、熱力學(xué)、流體學(xué)、化學(xué)、生物化學(xué)、材料學(xué)、靜、動態(tài)結(jié)構(gòu)力學(xué),加工技術(shù)等多種學(xué)科為一體的綜合產(chǎn)物。水質(zhì)為多變量的函 數(shù),冷卻更是多因素,多變量與多效應(yīng)綜合的過程。冷卻塔按水與空氣相對流動狀況不同,不同類型冷卻塔優(yōu)、劣,是冷卻塔業(yè)界在學(xué)術(shù)上長期爭論不休的問題,這 種爭論有力地促進了冷卻塔的技術(shù)的發(fā)展,在爭論中各自揚長避短,使冷卻塔技術(shù)不斷完善,向節(jié)能降耗,提高效率,降低投資等目標不斷技術(shù)進步! 」I(yè)生產(chǎn)或制冷工藝過程中產(chǎn)生的廢熱,一般要用冷卻水來導(dǎo)走。冷卻塔的作用是將挾帶廢熱的冷卻水在塔內(nèi)與空氣進行熱交換,使廢熱傳輸給空氣并散入大氣中。例如:火電廠內(nèi),鍋爐將水加熱成高溫高壓蒸汽,推動汽輪機做功使發(fā)電機發(fā)電,經(jīng)汽輪機作功后的廢汽排入冷凝器,與冷卻水進行熱交換凝結(jié)成水,再用水泵打回鍋爐循環(huán)使用。這一過程中乏汽的廢熱傳給了冷卻水,使水溫度升高,挾帶廢熱的冷卻水,在冷卻塔中將熱量傳遞給空氣,從風(fēng)筒處排入大氣環(huán)境中。冷卻塔應(yīng)用范圍:主要應(yīng)用于空調(diào)冷卻系統(tǒng)、冷凍系列、注塑、制革、發(fā)泡、發(fā)電、汽輪機、鋁型材加工、空壓機、工業(yè)水冷卻等領(lǐng)域,應(yīng)用最多的為空調(diào)冷卻、冷凍、塑膠化工行業(yè)。