97精品国自产拍在线观看_美日韩中文字幕_狠狠色丁香婷婷综合影院_h片欧美精品一区二区_一级毛片破过处的美女_亚洲AV有幕在线天堂动漫_无码专区白嫩少妇高潮喷水久久_皮特影院在线观看_热九九这里只有精品_亚洲综合网天天x

產(chǎn)品中心 Products
最新新聞 / News More
10
2019 - 11 - 01
據(jù)《世界阿爾茨海默癥2018年報(bào)告》顯示,每3秒鐘,全球就有一位癡呆癥患者產(chǎn)生。全球目前至少有5000萬(wàn)的癡呆患者。在中國(guó),目前約有1000萬(wàn)阿爾茨海默癥患者,預(yù)計(jì)到2050年,患者數(shù)將超過4000萬(wàn)人,比加拿大的總?cè)丝谶€要多。因此,理解這種疾病的發(fā)病原因比以往任何時(shí)候都更加迫切。此前有許多研究已經(jīng)發(fā)現(xiàn)了一些增加罹患癡呆癥風(fēng)險(xiǎn)的因素。有些因素是無(wú)法阻止的,如衰老。然而,其他潛在風(fēng)險(xiǎn)因素是有可能避免的,比如吸煙與飲酒。確定這些風(fēng)險(xiǎn)因素非常重要,因?yàn)樗鼈冇兄陬A(yù)防或延緩癡呆癥的發(fā)生。近日,發(fā)表在JAMA Network Open上的一篇研究,來(lái)自美國(guó)哈佛大學(xué)T.H.Chan公共衛(wèi)生學(xué)院的研究人員設(shè)計(jì)了一項(xiàng)研究以尋找癡呆癥與飲酒之間的聯(lián)系。盡管已有關(guān)于飲酒與癡呆癥的相關(guān)研究,但研究的科學(xué)性還有所欠缺。例如,在之前的一項(xiàng)研究中,研究人員計(jì)算了每年的日平均飲酒量。但是以這種方式計(jì)算的每日平均飲酒量會(huì)忽略酒精含量和飲酒頻率的細(xì)微差別。這一點(diǎn)非常重要。例如,每周有一天喝7杯啤酒可能會(huì)產(chǎn)生不同于每晚喝1杯啤酒的影響,盡管消耗的酒精量是一樣的。另一項(xiàng)研究的作者得出結(jié)論,中年酗酒會(huì)增加患癡呆癥的風(fēng)險(xiǎn)。然而,目前還不清楚經(jīng)常性的少量飲酒是否有同樣的影響。其他關(guān)于酒精、癡呆癥風(fēng)險(xiǎn)、載脂蛋白E4(APOE E4)之間關(guān)聯(lián)的研究使這一問題的答案更加復(fù)雜。這種基因變異與患阿爾茨海默癥的風(fēng)險(xiǎn)增加有關(guān)。較早的一項(xiàng)研...
11
2019 - 02 - 13
日前,《分子植物》(Molecular Plant)在線發(fā)表了中國(guó)農(nóng)業(yè)科學(xué)院油料作物研究所王漢中院士團(tuán)隊(duì)最新成果。該團(tuán)隊(duì)在國(guó)際上首次成功克隆了農(nóng)作物種子性狀的第一個(gè)細(xì)胞質(zhì)調(diào)控基因 orf188,并揭示了該基因調(diào)控油菜種子高含油量的作用機(jī)制。該成果為油菜高含油量育種提供了新途徑,為育種過程中雜交母本的選擇提供了理論支撐,對(duì)于農(nóng)作物不同類型細(xì)胞質(zhì)的應(yīng)用具有重要的指導(dǎo)意義。含油量是油菜產(chǎn)油量最重要的構(gòu)成因子之一,隨著現(xiàn)代育種對(duì)含油量潛力的不斷挖掘,提高品種的含油量越來(lái)越困難。該團(tuán)隊(duì)在油菜含油量遺傳研究的基礎(chǔ)上,從細(xì)胞質(zhì)效應(yīng)著手對(duì)含油量母體調(diào)控新機(jī)制研究取得突破,篩選到兩個(gè)對(duì)含油量具有極顯著細(xì)胞質(zhì)正負(fù)效應(yīng)的品種,鑒定出特異基因 orf188 控制細(xì)胞質(zhì)的含油量正效應(yīng),過表達(dá)該基因可以大幅度提升含油量。研究表明,orf188 為 nap(nap-like)型油菜品種所特有基因,是一個(gè)新近進(jìn)化形成的嵌合基因。該團(tuán)隊(duì)十余年來(lái)圍繞油菜種子性狀的母體調(diào)控進(jìn)行系統(tǒng)研究,此次對(duì)細(xì)胞質(zhì)基因調(diào)控種子含油量機(jī)理的揭示,是該團(tuán)隊(duì)繼發(fā)現(xiàn)角果皮發(fā)育調(diào)控種子粒重和含油量之后發(fā)現(xiàn)的又一條母體調(diào)控新途徑,進(jìn)一步豐富和完善了種子性狀的母體調(diào)控理論,也為其他農(nóng)作物性狀細(xì)胞質(zhì)效應(yīng)的解析提供了借鑒。相關(guān)論文信息:DOI:10.1016/j.molp.2019.01.012來(lái)源:中國(guó)科學(xué)報(bào)轉(zhuǎn)載:生物360
12
2019 - 06 - 14
隨著技術(shù)飛速發(fā)展、醫(yī)學(xué)數(shù)據(jù)的持續(xù)擴(kuò)增以及硬件設(shè)備的不斷提升,人工智能和醫(yī)療的結(jié)合方式越來(lái)越多樣化。目前AI在醫(yī)療領(lǐng)域中的落地的應(yīng)用場(chǎng)景主要有醫(yī)學(xué)影像、智能診療、智能導(dǎo)診、智能語(yǔ)音、健康管理、病例分析、醫(yī)院管理、新藥研發(fā)和醫(yī)療機(jī)器人等,其中在醫(yī)學(xué)影像中的應(yīng)用最為廣泛。一、影像醫(yī)學(xué)發(fā)展現(xiàn)狀醫(yī)學(xué)影像是醫(yī)生完成診斷的主要依據(jù),通過對(duì)影像的分析和比較,從而完成有依據(jù)的診斷。但是在實(shí)際過程中,往往會(huì)存在以下問題:(1)影像學(xué)診斷人才資源緊缺。醫(yī)療機(jī)構(gòu)普遍缺乏高水平的影像醫(yī)師,在疾病診斷時(shí)往往會(huì)發(fā)生同病異影,異病同影等情況。(2)傳統(tǒng)定性分析存在診斷誤差。醫(yī)生普遍擅長(zhǎng)定性分析,很多微小的定量變化無(wú)法通過肉眼判斷,很難做到定量分析。(3)醫(yī)生閱片時(shí)間長(zhǎng)。目前的影像呈現(xiàn)方式為數(shù)據(jù)和圖像,而不是最有效的信息,很大程度上限制了醫(yī)生的人工閱片速度。二、AI+醫(yī)學(xué)影像助力疾病診斷通過引入人工智能可有效解決部分問題,目前人工智能在醫(yī)學(xué)影像領(lǐng)域的應(yīng)用方向主要以下幾類:1. 影像設(shè)備的圖像重建AI可以通過算法的圖像映射技術(shù),將采集的少量信號(hào)恢復(fù)出與全采樣圖像同樣質(zhì)量的圖像,而且使用圖像重建技術(shù),可以由低劑量的CT和PET圖像重建得到高劑量質(zhì)量圖像。這樣在滿足臨床診斷需求的同時(shí),還能夠降低輻射的風(fēng)險(xiǎn)。2. 智能輔助診斷疾?。?)智能輔助診斷肺部疾病國(guó)內(nèi)應(yīng)用AI+CT影像最為成熟的領(lǐng)域在肺結(jié)節(jié)的識(shí)別上。AI能夠有效識(shí)...
聯(lián)系我們
北京照生行儀器設(shè)備有限公司
銷售熱線:010-62929079
公司總機(jī):010-62929079
圖文傳真:010-62929277
總部地址:北京市海淀區(qū)西二旗西路熱力公司院內(nèi)泰禾文化園二層
產(chǎn)品名稱: EVOS? Light Cube, GFP
型號(hào):
時(shí)間: 2019 - 04 - 12
描述All EVOS® fluorescence imaging systems and the Countess® II FL Automated Cell Counter contain our unique, proprietary LED light cubes. This world-leading light engine outputs remarkable intensity over a short light path that delivers superior fluorophore excitation. Each cube contains an LED, condensing optics, and hard-coated filters. EVOS® light cubes are user-changeable and automatically recognized by the system. The GFP light cube is ideal for use with Alexa Fluor® ...
產(chǎn)品名稱: EVOS? Light Cube, DAPI
型號(hào):
時(shí)間: 2019 - 04 - 12
描述All EVOS® fluorescence imaging systems and the Countess® II FL Automated Cell Counter contain our unique, proprietary LED light cubes. This world-leading light engine outputs remarkable intensity over a short light path that delivers superior fluorophore excitation. Each cube contains an LED, condensing optics, and hard-coated filters. EVOS® light cubes are user-changeable and automatically recognized by the system. The DAPI light cube is ideal for use with Acridine, Alexa F...
型號(hào):
時(shí)間: 2019 - 04 - 12
描述This power cord is for use with EVOS® XL, FL , FL Color, and FL Auto systems in countries with Type I power plugs. The Type I electrical plug is mainly used in Australia and New Zealand, but is also used in China and parts of Asia, South America, and Africa.
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This achromat objective is ideal for general applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. This is also a phase-contrast objective, making it useful for hard-to-see, translucent speciments. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnificati...
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This achromat objective is ideal for general applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. This is also a phase-contrast objective, making it useful for hard-to-see, translucent speciments. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnificati...
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This achromat objective is ideal for general applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. This is also a phase-contrast objective, making it useful for hard-to-see, translucent speciments. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnificati...
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This fluorite objective is ideal for fluorescence and demanding transmitted-light applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnifications and optical specifications.Additional characteristics of t...
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This fluorite objective is ideal for fluorescence and demanding transmitted-light applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnifications and optical specifications.Additional characteristics of t...
型號(hào):
時(shí)間: 2019 - 04 - 11
描述This fluorite objective is ideal for fluorescence and demanding transmitted-light applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnifications and optical specifications.Additional characteristics of t...
產(chǎn)品名稱: EVOS? M7000 Imaging System
型號(hào):
時(shí)間: 2019 - 04 - 11
用途在基礎(chǔ)研究領(lǐng)域用于微觀物質(zhì)的觀察,觀察其形態(tài)及所在位置。利用光學(xué)原理,對(duì)各類組織或細(xì)胞切片或各種培養(yǎng)容器內(nèi)的細(xì)胞樣品進(jìn)行明場(chǎng)或相差、熒光觀察,進(jìn)而獲取這些樣品的成像圖片工作原理顯微鏡是利用凸透鏡的放大成像原理,將人眼不能分辨的微小物體通過內(nèi)置的物鏡放大到人眼能分辨的尺寸、通過照相機(jī)成像,圖片可實(shí)時(shí)顯示于顯示器上。功能EVOS M7000整合式系統(tǒng)集全自動(dòng)成像系統(tǒng)和集成式軟件于一體,可通過高精度、自動(dòng)化移動(dòng)載物臺(tái)可對(duì)樣品進(jìn)行準(zhǔn)確定位;全自動(dòng)聚焦可方便找到目標(biāo)分子。適用于各種應(yīng)用領(lǐng)域,包括但不限于多通道熒光成像、圖像無(wú)縫拼接、細(xì)胞密度分析、多位置血管掃描和動(dòng)態(tài)圖像拍攝。具備多種高級(jí)功能,可對(duì)拍攝的圖片進(jìn)行多種分析(細(xì)胞計(jì)數(shù)、測(cè)量計(jì)算細(xì)胞直徑和細(xì)胞間距離等),也可對(duì)活細(xì)胞進(jìn)行延時(shí)成像拍攝。
產(chǎn)品名稱: EVOS? M5000 Imaging System
型號(hào):
時(shí)間: 2019 - 04 - 11
型號(hào):
時(shí)間: 2017 - 07 - 05
凍干是指在真空狀態(tài)下,將冷凍樣品中的水份等溶劑通過升華的方式移出樣品,最終使樣品干燥的一種干燥方式。在整個(gè)凍干過程中,樣品空間結(jié)構(gòu)沒有改變,極易重新溶解,保證了樣品的生物,化學(xué)結(jié)構(gòu)和活性,因而凍干法被廣泛應(yīng)用于生物制品、酶、醫(yī)藥和微生物等方面。 美國(guó)LABCONCO冷凍干燥系統(tǒng)80年代進(jìn)入中國(guó)市場(chǎng),市場(chǎng)占有量大,用戶群遍及醫(yī)藥、衛(wèi)生、農(nóng)業(yè)、工業(yè)等科研行業(yè),多年來(lái)以儀器出色的穩(wěn)定性、實(shí)用性、人性化和完善的售后服務(wù)贏得廣大用戶的認(rèn)可。 美國(guó)LABCONCO公司的FreeZone®凍干機(jī)系列型號(hào)有2.5L、4.5L、6L、8L、12L、18L,2.5T,冷阱溫度-50℃、-84℃、-102℃、-105℃四種。各式各樣的凍干室和附件,具有一流的結(jié)構(gòu)和靈活的組合方式,以其近一個(gè)世紀(jì)的生產(chǎn)經(jīng)驗(yàn)和品牌信譽(yù)致力于滿足不同客戶的多變需要。  美國(guó)LABCONCO冷凍干燥機(jī)系統(tǒng)包括:   1. 主機(jī)選擇(有2.5L、4.5L、6L、8L、12L、18L容量可選;有臺(tái)式和立式可選)。  2. 干燥容器選擇:柜式凍干室 (bulk drying),抽...
推薦新聞
地址:中國(guó)·上?!て謻|區(qū)-浦東新區(qū)康橋路787號(hào)5號(hào)樓159室
電話:021-64396663
Copyright@ 2015-2016 北京照生行儀器設(shè)備有限公司
傳真:+86 0755-2788 8009
郵編:330520