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技術文章
Technical articles我們知道,放(fang)射(she)性(xing)因素(su)是一種特(te)殊(shu)的(de)(de)(de)職業性(xing)危害因素(su),長期接觸X射(she)線(xian)、γ射(she)線(xian)和中子等射(she)線(xian)可能會(hui)對(dui)機體,特(te)別是某些敏(min)感器官和系統產(chan)生潛在(zai)(zai)的(de)(de)(de)危害。從(cong)發(fa)現(xian)X射(she)線(xian)到現(xian)在(zai)(zai),X射(she)線(xian)檢(jian)查(cha)在(zai)(zai)醫學領域充分發(fa)揮了(le)它的(de)(de)(de)作用(yong),顯示了(le)它的(de)(de)(de)*性(xing),得到廣大(da)醫務人(ren)員及(ji)患者的(de)(de)(de)認可。放(fang)射(she)技(ji)術的(de)(de)(de)應用(yong),有其特(te)殊(shu)性(xing),在(zai)(zai)給人(ren)類造福的(de)(de)(de)同(tong)時,如(ru)不注(zhu)意防(fang)護,可能對(dui)人(ren)造成(cheng)放(fang)射(she)損傷。從(cong)普通X射(she)線(xian)發(fa)展到如(ru)今(jin)的(de)(de)(de)CR、DR、DSA、CT,雖然(ran)醫學影像(xiang)設(she)備日益(yi)精進,機房(fang)設(she)計(ji)及(ji)屏蔽工作越來越專業,但是對(dui)于(yu)X射(she)線(xian)防(fang)護,卻不能掉以輕心。RJ31-1...
此次發(fa)布(bu)了7項《職(zhi)業(ye)(ye)性放射性皮膚疾病(bing)診斷(duan)》等衛生(sheng)健康標準。發(fa)布(bu)時間為2020年4月(yue)(yue)3日,實(shi)施(shi)時間定(ding)為2020年10月(yue)(yue)1日。具(ju)體編號和名稱如(ru)下:一、強制性國(guo)家職(zhi)業(ye)(ye)衛生(sheng)標準GBZ106—2020職(zhi)業(ye)(ye)性放射性皮膚疾病(bing)診斷(duan)(代替GBZ106—2016、GBZ219—2009、WS/T475—2015);GBZ118—2020油氣田測井放射防護(hu)要(yao)求(代替GBZ118—2002、GBZ142—2002);GBZ130—2020放射診斷(duan)放射防護(hu)要(yao)求(代替GBZ130—2013、GBZ165...
BJ5211L型輻(fu)射檢(jian)測儀(yi)(yi)(yi)(yi)(環境監測用(yong)х-γ空氣比釋(shi)動能(neng)率儀(yi)(yi)(yi)(yi))是(shi)監測各種放(fang)(fang)射性(xing)工(gong)作場所(suo)γ射線(xian)輻(fu)射劑(ji)量率的(de)(de)通用(yong)儀(yi)(yi)(yi)(yi)器。其采用(yong)美國TI超低功耗處理器方案,與(yu)同類儀(yi)(yi)(yi)(yi)器相(xiang)比本儀(yi)(yi)(yi)(yi)器具有更寬的(de)(de)劑(ji)量率測量范(fan)圍,良(liang)好能(neng)量響應特性(xing)。該儀(yi)(yi)(yi)(yi)器廣(guang)泛用(yong)于(yu)醫療、疾控、環保、冶金(jin)、石油、化工(gong)、放(fang)(fang)射性(xing)試驗室、商檢(jian)、工(gong)業探傷、輻(fu)射加工(gong)、礦山等(deng)各種需進(jin)行輻(fu)射環境與(yu)輻(fu)射防護檢(jian)測的(de)(de)場合(he)。核輻(fu)射存(cun)在于(yu)所(suo)有的(de)(de)物質之中。放(fang)(fang)射性(xing)物質是(shi)有害的(de)(de),強(qiang)放(fang)(fang)射線(xian)能(neng)人體造(zao)成非常(chang)大(da)的(de)(de)危害,同時放(fang)(fang)射線(xian)還具有累積作用(yong),即使是(shi)在低強(qiang)度環境下,長久...
危(wei)害1、電(dian)(dian)(dian)(dian)磁輻射(she)對易爆(bao)物質(zhi)(zhi)和(he)(he)(he)裝置的(de)危(wei)害高電(dian)(dian)(dian)(dian)平電(dian)(dian)(dian)(dian)磁感應和(he)(he)(he)輻射(she)可以引起(qi)易爆(bao)物質(zhi)(zhi)和(he)(he)(he)電(dian)(dian)(dian)(dian)爆(bao)兵器控制失靈(ling),發(fa)(fa)生意外(wai)爆(bao)炸。2、形(xing)成(cheng)空(kong)間電(dian)(dian)(dian)(dian)波(bo)(bo)噪(zao)音從(cong)大功率微波(bo)(bo)和(he)(he)(he)射(she)頻設(she)備泄漏出來的(de)電(dian)(dian)(dian)(dian)波(bo)(bo),會向空(kong)間輻射(she),形(xing)成(cheng)空(kong)間電(dian)(dian)(dian)(dian)波(bo)(bo)噪(zao)聲(sheng)。空(kong)間電(dian)(dian)(dian)(dian)波(bo)(bo)噪(zao)聲(sheng)可以干攏位于這個區域范圍(wei)內(nei)的(de)各種電(dian)(dian)(dian)(dian)子設(she)備正常工(gong)作。3、電(dian)(dian)(dian)(dian)磁輻射(she)影響人體健康(kang)微波(bo)(bo)對人體健康(kang)危(wei)害大,中長波(bo)(bo)小。其生物效(xiao)應,主要是機體把吸收的(de)射(she)頻能轉換為熱(re)能,形(xing)成(cheng)由過(guo)熱(re)而引起(qi)的(de)損傷。4、過(guo)量(liang)的(de)電(dian)(dian)(dian)(dian)磁輻射(she)直(zhi)接影響大腦組織(zhi)發(fa)(fa)育(yu)、骨髓發(fa)(fa)育(yu)、視力下(xia)降;肝病,造血功能下(xia)降,嚴懲(cheng)者可導(dao)致...
輻射(she)(she)(she)在(zai)無(wu)形之中危(wei)害(hai)著(zhu)人(ren)(ren)類(lei)的(de)身(shen)體,如今確保輻射(she)(she)(she)安全已成為(wei)健康生活與(yu)工作(zuo)的(de)保障(zhang)。生活中輻射(she)(she)(she)是無(wu)處不在(zai)的(de)。一方面說來,輻射(she)(she)(she)可(ke)以有利(li)于(yu)我(wo)們(men)的(de)生活生產,如冷(leng)凍保鮮(xian)、救死扶傷等;另一方面,如果過量(liang)(liang),輻射(she)(she)(she)也(ye)會(hui)傷害(hai)我(wo)們(men)的(de)身(shen)體乃至生命(ming)。俗話說得好,凡事都有個(ge)度。一旦(dan)超過正常值(zhi),就過猶不及(ji)了。那么,輻射(she)(she)(she)劑(ji)(ji)量(liang)(liang)可(ke)以自(zi)測嗎?有哪些設備可(ke)供選擇?對外照射(she)(she)(she)劑(ji)(ji)量(liang)(liang)的(de)測量(liang)(liang),可(ke)佩帶個(ge)人(ren)(ren)劑(ji)(ji)量(liang)(liang)計,包括(kuo)熱(re)釋(shi)光計、膠片(pian)(pian)及(ji)帶報(bao)警裝置的(de)各種個(ge)人(ren)(ren)劑(ji)(ji)量(liang)(liang)計。它們(men)既(ji)可(ke)測量(liang)(liang)劑(ji)(ji)量(liang)(liang)率,也(ye)可(ke)測定所接受(shou)的(de)累(lei)積(ji)劑(ji)(ji)量(liang)(liang)。其中,熱(re)釋(shi)光片(pian)(pian)和(he)膠片(pian)(pian)需要(yao)送實...
隨著科技水平的(de)(de)飛速發展,電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)技術(shu)在(zai)(zai)(zai)各個(ge)領域的(de)(de)應(ying)(ying)用(yong)越發廣(guang)泛(fan),電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)輻(fu)(fu)射(she)(she)無(wu)處(chu)不在(zai)(zai)(zai),已成為(wei)(wei)人(ren)類(lei)*的(de)(de)“伙伴”。我們所生活的(de)(de)世界里,電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)輻(fu)(fu)射(she)(she)無(wu)處(chu)不在(zai)(zai)(zai)。自然界的(de)(de)太陽光、閃電(dian)(dian)(dian)(dian)(dian)(dian)、宇宙射(she)(she)線(xian)等(deng),都是天然存(cun)在(zai)(zai)(zai)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)波(bo),我們已經在(zai)(zai)(zai)一(yi)定程度上(shang)適應(ying)(ying)了這(zhe)類(lei)輻(fu)(fu)射(she)(she);而人(ren)類(lei)以(yi)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)技術(shu)為(wei)(wei)基(ji)礎的(de)(de)許(xu)多創(chuang)造發明(ming),也會(hui)向空間輻(fu)(fu)射(she)(she)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)能(neng)量(liang),比如手(shou)機和(he)手(shou)機基(ji)站、微波(bo)爐、電(dian)(dian)(dian)(dian)(dian)(dian)腦、電(dian)(dian)(dian)(dian)(dian)(dian)視(shi)機等(deng)等(deng)。電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)輻(fu)(fu)射(she)(she)是指電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)能(neng)量(liang)以(yi)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)波(bo)或光量(liang)子形式發射(she)(she)到空間的(de)(de)現象(xiang)。可(ke)以(yi)說只(zhi)要(yao)有電(dian)(dian)(dian)(dian)(dian)(dian)有光,就有電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)輻(fu)(fu)射(she)(she)。電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)輻(fu)(fu)射(she)(she)根據頻(pin)率的(de)(de)不同,可(ke)以(yi)分(fen)為(wei)(wei)低頻(pin)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)波(bo)、無(wu)線(xian)電(dian)(dian)(dian)(dian)(dian)(dian)...
室(shi)內氡(dong)的(de)(de)(de)來(lai)源(yuan)主要有:地基(ji)的(de)(de)(de)土壤及巖石、建筑材料(大理石、花崗巖等(deng))、天然氣、生(sheng)活用(yong)水(shui)(shui)(地下水(shui)(shui)作為直接水(shui)(shui)源(yuan))、室(shi)外空氣等(deng)五個(ge)方(fang)面(mian)(mian)。氡(dong)是什么,下面(mian)(mian)給大家(jia)(jia)簡單說明一下:1.氡(dong)是一種天然產(chan)生(sheng)的(de)(de)(de)放射性氣體,在(zai)家(jia)(jia)庭(ting)、學校(xiao)和(he)工(gong)作場(chang)所等(deng)室(shi)內環境中都可(ke)能發(fa)現氡(dong)。2.氡(dong)是造成肺癌的(de)(de)(de)第二大原因,僅次(ci)于吸(xi)煙。3.氡(dong)造成的(de)(de)(de)肺癌估計占總數的(de)(de)(de)3%-14%,具體取決于該國氡(dong)的(de)(de)(de)平均水(shui)(shui)平以(yi)及吸(xi)煙率。4.室(shi)內氡(dong)濃度越低(di),肺癌風險(xian)越小(xiao),目前尚不(bu)(bu)知不(bu)(bu)產(chan)生(sheng)風險(xian)的(de)(de)(de)氡(dong)接觸低(di)限值。5.有經(jing)過充分檢驗(yan)、耐(nai)用(yong)且(qie)節約(yue)的(de)(de)(de)方(fang)法,可(ke)以(yi)防...
手持式礦(kuang)(kuang)石(shi)分(fen)析(xi)儀可以準確(que)地(di)分(fen)析(xi)從鎂礦(kuang)(kuang)(Mg)到鈾礦(kuang)(kuang)(U)間的(de)80余種(zhong)自(zi)然(ran)礦(kuang)(kuang)石(shi),具有高(gao)效、便攜、準確(que)等特點,不受現(xian)場條(tiao)件(jian)的(de)限制(zhi),尤其適(shi)合野外快速分(fen)析(xi),已在(zai)國內外地(di)質礦(kuang)(kuang)產資源行(xing)(xing)業得到廣泛應用。TrueX®手持式礦(kuang)(kuang)石(shi)分(fen)析(xi)儀是(shi)用于(yu)礦(kuang)(kuang)石(shi)成分(fen)分(fen)析(xi)的(de)理想儀器。能快速進行(xing)(xing)多(duo)元素現(xian)場分(fen)析(xi)及礦(kuang)(kuang)體分(fen)析(xi)。下(xia)面我來給大(da)家簡(jian)單(dan)介紹一下(xia)這款TrueX®手持式礦(kuang)(kuang)石(shi)分(fen)析(xi)儀。產品優勢1、選用進口高(gao)性能X光射(she)線發(fa)射(she)管和超(chao)高(gao)分(fen)辨率探測器,結合數字多(duo)道處理技術(shu),使得TrueX®手持式礦(kuang)(kuang)石(shi)分(fen)析(xi)儀...