苯硫脲
- 网络PTC;Phenylthiocarbamide;phenylthiourea
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测定了1008名(男510名,女498名;儿童679名,成人329名)汉族人的苯硫脲(PTC)尝味阈值。
PTC taste threshold of 1008 Han people ( male 510 , female 498 ; children 679 , adult 329 ) was determined in Hebei province .
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宁夏回族苯硫脲尝味能力的测定
Determination of PTC Tasting Ability in the Hui Nationality of Ningxia
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目的测定湖南侗族青少年苯硫脲(PTC)的尝味能力。
Objective To determine the taste ability of Dong nationality juveniles to PTC in Hunan .
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经熔点测定,HPLC/MS/MS,FTIR,UV及1HNMR等分析确定为二苯硫脲。
The product was identified by melting point , HPLC / MS / MS , FTIR , UV and 1H NMR analyses .
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然而,用熔点测定、HPLC/MS/MS,FTIR,UV和1HNMR等手段对此晶体进行分析,确定其为二苯硫脲。
However , identified by melting point , HPLC / MS / MS , FTIR , UV and 1H NMR analyses , the pure crystal should be diphenyl thiourea .
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本文采用Harris和Kalmus改良阈值法测定了内蒙古地区2034例(蒙古族998例,汉族1036例)苯硫脲尝味阈值。
The taste threshold for Phenylthiourea among 2034 cases ( 998 cases for Mongolian , 1036 cases for Han ) in Inner Mongolia region were determined by means of Harris-Kalmus ~ 1 modified threshold .
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常温常压下,用AlCl3作催化剂催化苯胺和CS2进行反应,可以高收率和高选择性地得到二苯硫脲。
Under mild conditions , at room temperature and ambient atmosphere , diphenyl thiourea could be synthesized through the reaction of aniline and CS 2 over AlCl 3 catalyst with high yield and high selectivity .
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探讨了合成二苯硫脲的新方法。以酸性树脂作催化剂在回流温度下使苯胺与CS2反应6h,二苯硫脲的收率达827%,选择性为100%。
A new method to synthesize N , N ' - diphenyl thiourea ( DPTU ) from aniline and CS 2 was developed in the presence of acidic resin as catalyst under reflux temperature for 6 h with the yield of 82.7 % and the selectivity of 100 % .
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二苯硫脲是重要的医药和染料的中间体。
Diphenyl thiourea is an important intermediate of medicine and dyestuff .
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GC/MS解析中二苯硫脲的中性丢失
Neutral Loss of Aniline in GC / MS Analysis of Diphenyl Thiourea
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新疆地区七个民族苯硫脲味阈的测定
Determination of phenylthiocarbamide ( ptc ) taste thresholds of 7 nationalities Xinjiang
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内蒙古地区蒙古族和汉族苯硫脲尝味能力的测定
Determination of Taste Sensitivity of Phenylthiourea in Mongolian And Han of Inner Mongolia
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苯硫脲与其它物质苦味味觉遗传相关性阈值分析
Threshold Studies on The Relativity of Bitter Taste Between PTC and Other Substances
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二苯硫脲类化合物的粉末倍频性能研究
Powder second harmonic generation of disubstituted diphenylthiourea derivative
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中国不同民族中苯硫脲味盲基因频率的研究
Distribution of Taste Sensitivity of Phenylthiocarbamide ( PTC ) of Various Nationalities in China
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苯硫脲味盲基因型对苦涩蔬菜味觉能力的影响
The influences on PTC taste genetype to the bitter and astringent vegetable sense of taste ability
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云南白族及纳西族苯硫脲味盲频率的分析
Analysis of Taste-Blindness Frequency for Phenyl-thiocarbamide in Bai and Naxi Nationalities in Province of Yunnan China
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500例汉族青年苯硫脲尝味能力的测定
Determination of the Taste Ability to Phenylthiocarbamide ( PTC ) in 500 Young People of Han Nationality
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湖南侗族青少年苯硫脲尝味能力测定与分析
Determination and Analysis of the Taste Ability of Teenages of Dong Nationality to Phenylthiocarbamide ( PTC ) in Hunan
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体育系学生苯硫脲尝味能力与血型的研究结果表明,不同血型的大学生其行为有明显差异性,给学校管理人员和学生职业选择问题提出了参考意见。
The researches reveal that there are significant differences in behavior among various blood type students , which gives a suggestion for school administrator 's and student 's professional selection .
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实验结果表明二苯硫脲质谱裂解中可能发生了中性丢失,丢失了中性分子苯胺,生成的异硫氰酸苯酯分子离子由于π电子共轭而致稳。
The results showed that neutral molecule of aniline may be lost in the cleavage of mass spectra , while the remainder molecular ion of phenyl iso-thiocyanate became steady due to the conjugate of π electron .
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研究了苯异硫脲基乙酸(PTHA)用于Pd(Ⅱ)的萃取分离性能,包括萃取酸度、试剂用量、萃取容量、离子干扰等方面。
Phenylthiohydantoic acid ( PTHA ) is prepared and the extraction separation of palladium is studied .
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心肌显像剂锝-99m-胺苯缩硫脲的合成及其初步动物实验
Myocardial imaging agent synthesis of Tc-99m-p-TPA-DTS and its primary animal experiment
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N′-(嘧啶-2-)苯甲酰硫脲的合成及其生物活性研究
Synthesis and biological activity of N ′ ( pyrimidin 2 yl ) benzoylthioureas
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含有1-苯基-3-苯甲酰基硫脲端基的开链冠醚的合成(Ⅱ)
Synthesis of noncyclic crown ethers with 1 phenyl 3 benzoyl thiocarbamide as terminal groups (ⅱ)
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介绍了新试剂N苯基N′(氨基对苯磺酸钠)硫脲(PPT)的合成方法。
The synthesis of a new reagent N phenyl N ' ( sodium p aminobenzenesulfonate ) thiourea ( PPT ) is described .
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合成了目标配合物:碘化双[3,4二甲氧基苯甲醛缩氨基硫脲]合锌(II),其结构通过单晶X射线衍射法确定。
The target complex Bis - yd zinc ( II ) iodide has been synthesized and characterized by X - ray single - crystal structure analysis .
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新试剂N-间甲苯基-N′-(氨基对苯磺酸钠)硫脲(MMPT)的合成及其在分析化学中的应用
Synthesis of the New Reagent N m Methylphenyl N ′ ( Sodium p aminobenzene sulfonate ) thiourea ( MMPT ) and Its Applications in Analysis
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新试剂N-苯基-N′-(氨基对苯磺酸钠)硫脲的合成及其测定微量铂(Ⅳ)的研究和应用
Synthesis and application of the new reagent n-phenyl-n ′ - ( sodium p-aminobenzenesulfonate ) thiourea
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N-庚基-N′-(氨基对苯磺酸钠)硫脲对银的定性鉴定
Qualitative identification of Ag ~ + with N-heptyl-N ′ - ( sodium p-aminobenzenesulfonate ) thiourea