Hydride generation atomic absorption spectrometry, phosphate rock, wet-process phosphoric acid, trace arsenic, trace mercury, determination

氫化物發(fā)生-原子吸收光譜法，磷礦石在线涩视频网址，濕法磷酸456亚洲人成高清在线观看，微量砷，微量汞裸体美女扒尿口喷白浆草莓视频，測定

In 21st century, life science will be the most important science. How to realize the in-vivo and on-line determination of minim biological sample has important role to the development of life science.

二十一世紀將是生命科學的新世紀人人爽人人操97，如何實時、在體欧美成A人片免费观看久久、連續(xù)的檢測微量和超微量的生物樣品對于生物欧美性XXXXX极品视频、藥物乃至生命科學的發(fā)展都具有重要的意義。

The method is based on the catalytic effect of trace formaldehyde on the reaction between potassium bromate and Azur A .

研究了在H2SO4介質中无码播放，微量甲醛對KBrO3氧化天青A 有較強的催化作用，建立了催化光度法測定微量甲醛的新方法。

All the methods used now have a common technical difficulty: The presence of large amount of uranium makes unacceptable interferences to the determination of neptunium. A separation procedure is absolutely necessary to separate neptunium from uranium completely.

國內(nèi)一直沒有一個比較理想的準確AV在线在线、靈敏的方法自拍视频日韩在线视频观看网站免费，解決鈾產(chǎn)品中微量镎的測定問題，主要原因是現(xiàn)有的方法存在一個共同的技術難點：常量的鈾對微量镎的測定干擾很大最新免费看的黄色网站，必須要將常量鈾與微量镎定量分離日本三级黄在线观看。

Methods: Zinc has catalysis ability in the system of oxidze xylenol orange in medium, and the discoloration extent of methyl orange has a linearity to the content of zinc. Based on this fact, a new photometric method for the determination of zinc was proposed.

在H2SO4介質中，微量鋅對過氧化氫氧化二甲酚橙的反應體系具有催化作用国产热门明星无码视频，且二甲酚橙被氧化后的褪色程度ΔA與微量鋅的含量有線性關系欧美特级AAAA，據(jù)此建立了二甲酚橙褪色光度法測定微量鋅的新方法。

Objective The anticogant to the endotheliotoxin receptor is a promising drug to treat with the pulmonary arterial hypertension therotically.But in our country there was few systemical clinical trial about the drug used in the disease.We study the curative effect and the side effect of an anticogant to the endotheliotoxin receptor-Tetramethylpyrazine on the pulmonary arterial hypertension.Methods The64newborn patients were continually main line the tetramethylpyrazine by the mini pump and stimutaneously treated with the respiratory machine.The injec-tion speed was controlled from5μg/kg·min to10μg/kg·min,or to20μg/kg·min.

目的 探討內(nèi)皮素受體拮抗劑—阿魏酸鈉微量泵持續(xù)靜脈注射治療新生兒肺動脈高壓的療效和不良反應方法對64例肺動脈高壓的新生兒在呼吸機械通氣的情況下同時用微量泵持續(xù)靜脈注射阿魏酸鈉日本免费网，阿魏酸鈉微量泵靜脈注射的速度由5μg/開始又粗又大又色视频网站，在保證體循環(huán)血壓的基礎上可以逐漸加量至10μg/，直至20μg/女人爽到高潮视频。

WZ-2A Trace Vibrator is especially develeped and made for hospitals,sanitation and antiepedmic,scientific researell brauches and producing Departments as the vibrating gools used for micro blood serum analying.

WZ-2A型微量振蕩器（ WZ-2A Trace Vibrator）介紹：微量振蕩器是專門為醫(yī)院使劲摸使劲操无码在线、衛(wèi)生防疫、科研單位和生產(chǎn)部門研制生產(chǎn)的www26uu欧美，作微量血清分析等用途的振蕩工具污污美女在线观看免费。

Aiming at the disturbing of trace tin and trace germanium in existing simultaneous, using Artificial Neural Networks spectrometry determined simultaneously trace tin and trace germanium in extraction raffinate and stripping raffinate, tested the effect of these two metal separation and extraction.

針對微量錫與微量鍺同時存在下相互干擾測定的困難進行研究，利用人工神經(jīng)網(wǎng)絡光度法比較準確的同時測定出萃余水相和反萃取水相中的微量錫與微量鍺的含量国产男女色黄大片，驗證了兩者的分離富集的效果亚洲一区IGAO影院。

Objective To know the relation between occupation and the microalbuminuria,the known-rate of hypertension,the application of ACEI and the knownrateofmicroalbuminuria.Methods Seven medical units participate in the investigation of2650diabetic cases.Theinvestigationconsists:blood pressure;case history of diaˉbetes mellitus;whetherornothavechronicrennalfailure;microalbuminuria;the application of ACEI and the occupaˉtion.

目的 了解糖尿病患者微量白蛋白尿、高血壓知曉率8X免费视频国产区、ACEI的應用情況以及微量白蛋白尿的知曉率與職業(yè)的關系方法 7家醫(yī)療單位對2650例糖尿病病人進行調查亚洲一区二区区、測血壓，包括糖尿病病史国产欧洲aaa、職業(yè)欧美乐播视频、有無慢性腎功能衰竭、尿微量白蛋白檢測欧美大泬、及ACEI應用情況久久久精品久久久。

The effects and mechanism of GABAergic neurons, NOergic neurons, opioid peptide and cyclic adenosine monophosphate in the nucleus reticularis thalami on sleep-wakefulness cycle of rats and the effects and mechanism of the 5-HTergic nerve fibers project from the nucleus raphes dorsalis to RT on sleep-wakefulness cycle of rats were investigated with the methods of brain stereotaxic, nucleus spile, microinjection and polysomngraphy.1. The effects of GABAergic neurons in RT on sleep-wakefulness cycle of rats1.1 Microinjection of 3-mercaptopropionic acid (3-MP, a kind of glutamate decarboxylase inhibitor) into RT. On the day of microinjection, sleep only decreased a litter. On the second day, sleep marked decreased and wakefulness marked increased. On the third and fourth day, sleep and wakefulness stages resumed to normal.1.2 Microinjection of gamma-amino butyric acid (GABA 1.0μg) into RT enhanced sleep and reduced wakefulness compared with control; while microinjection of L-glutamate (L-Glu, 0.2μg) decreased sleep and increased wakefulness; microinjection of bicuculline (BIC, 1.0μg), a GABAA receptor antagonist, enhanced wakefulness and reduced sleep; microinjection of baclofen (BAC, 1.0μg), GABAB receptor agonist, had the same effects as GABA.2. The effects of NOergic neurons in RT on sleep-wakefulness cycle of rats2.1 Microinjection of L-arginine (L-Arg, 0.5μg) into RT decreased sleep compared with control, but there were on statistaical difference between L-Arg group and control; while microinjection of sodium nitroprusside (SNP, 0.2μg), a NO donor into RT, sleep marked decreased and wakefulness marked increased. Microinjection of nitric oxide synthase inhibitor, N-nitro-L-arginine (L-NNA, 2.0μg) into RT enhanced sleep and reduced wakefulness.2.2 After simultaneous microinjection of L-NNA (2.0μg) and SNP (0.2μg) into RT, SNP abolished the sleep-promoting effect of L-NNA compared with L-NNA group; after simultaneous microinjection of L-NNA (2.0μg) and L-Arg(0.5μg) into RT, we found that L-NNA could not blocked the wakefulness-promoting effect of L-Arg.3. The effects of opioid peptide in RT on sleep-wakefulness cycle of rats3.1 Microinjection of morphine sulfate (MOR, 1.0μg) into RT increased wakefulness and decreased sleep compared with control; while microinjection of naloxone hydrochloride (NAL, 1.0μg), the antagonist of opiate receptors, into RT, enhanced sleep and reduced wakefulness.3.2 After simultaneous microinjection of MOR (1.0μg) and NAL (1.0μg) into RT, the wakefulness-promoting effect of MOR and the sleep-promoting effect of NAL were not observed compared with control.4. The effects of cAMP in RT on sleep-wakefulness cycle of rats Microinjection of cAMP (1.0μg) into RT increased sleep and decreased wakefulness compared with control; microinjection of methylene blue (MB,1.0μg) into RT enhanced sleep and reduced wakefulness compared with control.5. The effects of the 5-HTergic nerve fibers project from DRN to RT on sleep-wakefulness cycle of rats5.1 When L-Glu (0.2μg) was microinjected into DRN and normal sodium (NS,1.0μg) was microinjected into bilateral RT. We found that sleep was decreased and wakefulness was increased compared with control; when L-Glu (0.2μg) was microinjected into DRN and methysergide (MS,1.0μg), a non-selective 5-HT antagonist, was microinjected into bilateral RT, We found that sleep was enhanced and wakefulness was reduced compared with L-Glu group.5.2 When p-chlorophenylalanine (PCPA, 10μg) was microinjected into DRN and NS (1.0μg) was microinjected into bilateral RT, We found that sleep was increased and wakefulness was decreased compared with control; microinjection of 5-hydroxytryptaphan (5-HTP, 1.0μg), which can convert to 5-HT by the enzyme tryptophane hydroxylase and enhance 5-HT into bilateral RT, could block the effect of microinjection of PCPA into DRN on sleep-wakefulness cycle.

本研究采用腦立體定位、核團插管日韩网红美女主播自拍视频在线播放、微量注射黑人性爱黄片、多導睡眠描記等方法，研究丘腦網(wǎng)狀核(nucleus reticularis thalami久久九九久九久，RT)中γ-氨基丁酸(gamma-amino butyric acid 亚洲无遮挡黄片，GABA)能神經(jīng)元、一氧化氮(nitrogen monoxidum黄色网站精品久久久久久，NO)能神經(jīng)元www.av黄网、阿片肽類神經(jīng)遞質天堂AV毛片在线看、環(huán)一磷酸腺苷(cyclic adenosine monophosphate，cAMP)及中縫背核(nucleus raphes dorsalis欧美视频在线观看aaaa，DRN)至RT的5-羥色胺(5-hydroxytryptaminewww.天堂av在线，5-HT)能神經(jīng)纖維投射對大鼠睡眠-覺醒周期的影響及其作用機制。1 RT內(nèi)GABA能神經(jīng)元對大鼠睡眠-覺醒周期的影響1.1大鼠RT內(nèi)微量注射GABA合成關鍵酶抑制劑3-巰基丙酸(3-MP95在线视频精品免费观看，5μg)逼逼插插尤物，注射當天睡眠時間略有減少，第二日睡眠時間顯著減少欧美日韩特级视频，覺醒時間明顯增多调教99riav影院，第三、四日睡眠和覺醒時間逐漸恢復至正常全部A级毛片在线播放。1.2大鼠RT內(nèi)微量注射GABA受體激動劑GABA( 1.0μg)后在线看一级，與生理鹽水組比較，睡眠時間增加91免费偷拍视频网站，覺醒時間減少性爱在线观看；而RT內(nèi)微量注射L-谷氨酸(glutamic acid， L-Glu国产AⅤ熟女乱视频， 0.2μg)后AV三级毛片网址，睡眠時間減少，覺醒時間增加亚洲色图国产专区；RT內(nèi)微量注射GABAA受體阻斷劑荷包牡丹堿(bicuculline波多性爱视频，BIC，1.0μg)后国产精品一区二区精品视频，睡眠時間減少亚欧美黄色网，覺醒時間增加；RT內(nèi)微量注射GABAB受體激動劑氯苯氨丁酸(baclofen国产草莓视频A区在线观看，BAC美女跪下吃J8，1.0μg)后，產(chǎn)生了與GABA相似的促睡眠效果日韩黄片AV。2 RT內(nèi)NO能神經(jīng)元對大鼠睡眠-覺醒周期的影響2.1大鼠RT內(nèi)微量注射NO的前體L-精氨酸(L-Arg一级黄色视频九九影院，0.5μg)后，與生理鹽水組對比国产又大又黄又爽的视频免费观看，睡眠時間略有減少国产三级国产精品三级在线，但無顯著性意義；而RT內(nèi)微量注射NO的供體硝普鈉(Sodium Nitroprusside福利爱爱视频，SNP成年人午夜视频网站，0.2μg)后可明顯增加覺醒時間，縮短睡眠時間99久久国产免费只有精品；微量注射一氧化氮合酶抑制劑L-硝基精氨酸(L-arginine综合图区欧美亚洲综合在线，L-NNA欧美多人操，2.0μg)后，引起睡眠時間增多免费看黃色片，覺醒時間減少欧洲一区视频在线观看。2.2大鼠RT內(nèi)同時微量注射L-NNA(2.0μg)和SNP(0.2μg)后與L-NNA組比較發(fā)現(xiàn)SNP逆轉了L-NNA的促睡眠作用；RT內(nèi)同時微量注射L-NNA(2.0μg)和L-Arg(0.5μg)后美女裸体污视频，與L-NNA(2.0μg)組比較發(fā)現(xiàn)L-Arg可以增加覺醒而縮短睡眠，其促覺醒作用未能被NOS的抑制劑L-NNA所逆轉亚洲精品国产精品麻豆99。3 RT內(nèi)阿片肽對大鼠睡眠-覺醒周期的影響3.1大鼠RT內(nèi)微量注射硫酸嗎啡(morphine sulfate熟女一级毛片，MOR，1.0μg)后與生理鹽水組對比亚洲一级片免费视频，睡眠時間減少而覺醒時間增加免费看欧美下身喷水视频； RT內(nèi)微量注射阿片肽受體拮抗劑鹽酸納洛酮(naloxone hydrochloride，NAL在线黄色黑人网站，1.0μg)后與生理鹽水組比較色综合无码，睡眠時間增加而覺醒時間減少。3.2大鼠RT內(nèi)同時微量注射MOR(1.0μg)和NAL(1.0μg)后日女人逼视频，與生理鹽水組對比在线爆乳，原有的MOR促覺醒效果和NAL的促睡眠效果都沒有表現(xiàn)。4 RT內(nèi)環(huán)一磷酸腺苷信使對大鼠睡眠-覺醒周期的影響大鼠RT內(nèi)微量注射cAMP(1.0μg)后與NS(1.0μg)組比較亚洲天堂久久2019，睡眠時間增多而覺醒時間減少国内自拍视频在线看免费观看；RT內(nèi)微量注射亞甲藍(methylene blue，MB特黄A级A片国产免费—欢迎您，1.0μg)后成在线人A片免费播放视频，與NS組比較，睡眠時間增多而覺醒時間減少国产原创在线观看网站免费下载。5中縫背核投射到丘腦網(wǎng)狀核的5-羥色胺能神經(jīng)纖維對大鼠睡眠-覺醒周期的影響5.1大鼠DRN內(nèi)微量注射L-Glu(0.2μg)国内精品一区二区三区香蕉，同時在雙側RT內(nèi)微量注射NS (1.0μg)后，與對照組(DRN和雙側RT注射NS亂倫图片网， 0.2μg)比較全部毛片免费看，睡眠時間減少，覺醒時間增多99reshipin；大鼠DRN內(nèi)微量注射L-Glu(0.2μg)玖色网站，同時在雙側RT內(nèi)微量注射二甲基麥角新堿(methysergide， MS欧美激情偷乱人伦小说， 1.0μg )后5555www，與對照組(DRN注射L-Glu 0.2μg，雙側RT注射NS 1.0μg)比較日韩毛片一区二区三区，睡眠時間增多91网站在线观看精品，覺醒時間減少欧美三级性爱在线。5.2大鼠DRN內(nèi)微量注射對氯苯丙氨酸(p-chlorophenylalanine，PCPA欧美性交2，10μg)黄片·COM，同時在雙側RT內(nèi)微量注射NS (1.0μg)后，與對照組(DRN和雙側RT注射NS欧美一级AA大片免费看视频人， 1.0μg)比較十八岁美女一级片，睡眠時間增多，覺醒時間減少18岁A级黄色和特级黄色视频；大鼠DRN內(nèi)微量注射PCPA(10μg)特黄AAAAAA一级视频，產(chǎn)生睡眠增多效應后，在雙側RT內(nèi)微量注射5-羥色胺酸(5-hydroxytryptaphan 九九在线精品国产麻豆， 5-HTP在线天堂网www官网， 1.0μg )后，與對照組(DRN注射PCPA 10μg日韩欧美爱爱视频，雙側RT注射NS 1.0μg)比較国产精品18高潮网站，睡眠時間減少，覺醒時間增多JiZzJiZZ国产免费A片7。