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     PEG Catalytical Synthesis of 1,4-Bis(Imidazol-1-yl)Butane
     PEG催化合成1.4—双(咪唑—1—基)丁烷
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     Seven solids complexes novel ligand 1, 8 (1' phenyl 3' methyl 5' oxopyrazo 4' yl ) 3, 6 dioxa 1, 8 octanedione (H2L) with rare earth elements have been prepared by reacting H2L with rare earth nitrates in ethyl alcohol solution.
     在乙醇溶液中合成了7种1,8—双—(1'苯基—3'—甲基—5'—氧代吡唑—4'—基)—3,6—二氧杂辛二酮—[1,8],(简作H2L)稀土配合物。
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     Synthesis of [2-(5-Hexyl-1,3-dioxane -2-yl)ethyl ] triethylammonium Bromide
     溴化[2—(5—己基—1,3—二氧环己烷——2—基)乙基]三乙基铵的合成<英>
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     Methyl {2-[(3-(un)substituted phenyl-1,2,4-oxadia-zol-5-yl)methoxy]phenyl}acetate(7a~7f) were obtained by methyl (2-hydroxyphenyl) acetate reacting with the 4a~4f.
     4a~4f与邻羟基苯乙酸甲酯发生亲核取代反应得到中间体2-{[3-(取代)苯基—1,2,4—噁二唑—5—基]甲氧基}苯乙酸甲酯(7a~7f)。
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     Phase Transfer Catalytical Synthesis of 1. 4-Bis(Imidazol-1-yl)Burane
     PTC法合成1,4—双(咪唑—1—基)丁烷
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     2. basal cell;
     细胞;
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     Silicon Carbide Based Composites
     碳化硅复合材料
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Synthesis and Microbiological Evaluation of Novel [N-Acetyl-2,6-Diarylpiperidin-4-YL]-5-Spiro-4-Acetyl-2-(Acetylamino)-Δ2-1,3,4-
      
Several 1-(substituted phenoxy)-3-{[4-(4-trifluoromethyl) phenoxy] piperidin-1-yl} propan-2-ols (str.II) were prepared in a six-step reaction sequence starting from methylamine and ethyl acrylate and evaluated for antidepressant activity.
      
Among these compounds, 6-benzo[1,3]dioxol-5-yl-4-oxo-hex-5-enoic acid (3) was the most active one.
      
A facile and new approach to synthesize 2-amino-4-(4-amoinophenyl)-1H-1,3-diazol-1-yl-alkylaminomethanethiones
      
The synthesis and biological activity of a new series of 2-{3-[substituted benzylamino-methyl)-phenyl]-4H-benzopyrane-4-one (IVa-e) and N-substituted benzyl-N-[3-(4-oxo-4H-benzopyrane-2-yl)benzyl]-3-phenyl-acrylamide (Va-e) derivatives are reported.
      
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Nine Marchi series of albino rats in which various points of the retina were destroyed by the method of thermocautery have been carefully studied. The courses and the terminations of the degenerated optic fibers have been determined. The results are summarized by a composite diagram (fig. 9). It shows:(1) that the fibers issuing from the upper quadrant of the retina are lying in the lateral of the optic nerve, crossed in the lower level of the chiasma passed along the medial part of the crossed optic tract and...

Nine Marchi series of albino rats in which various points of the retina were destroyed by the method of thermocautery have been carefully studied. The courses and the terminations of the degenerated optic fibers have been determined. The results are summarized by a composite diagram (fig. 9). It shows:(1) that the fibers issuing from the upper quadrant of the retina are lying in the lateral of the optic nerve, crossed in the lower level of the chiasma passed along the medial part of the crossed optic tract and terminated partly in the ventral of the posterior half of the lateral geniculate body and partly in the caudolateral part of the superior colliculus;(2) that those from the lower retina are lying in the lower part of the nerve, crossed in the higher level of the chiasma, passed along the lateral border of the crossed tract, and terminated partly in the dorsal part of the anterior half of the lateral geniculate body and partly in the medio-oral part of the superior colliculus;(3) that those from the temporal retina are lying in the lateral part of the nerve, crossed in the lower level of the chiasma, passing through the inner part of the tract and terminated partly in the medial part of the lateral geniculate body and partly in the lateral part of the superior colliculus;(4) that those from the nasal retina are lying in the medial of the nerve, crossed in the higher level of the chiasma, passing through the outer border of the tract and terminated partly in the lateral part HSIANG-TUNG CHANGof the anterior half of the geniculate body and partly in the medial part of the superior colliculus;(5) that those from the peripheral margin of the temporal retina are lying in the lateral half of the nerve, uncrossed in the chiasma, passing through the upper half of the tract, terminated in the central part of the geniculate body and never reached the superior colliculus; and(6) that the anterior and posterior accessory optic tracts composed probably of the collaterals of the crossed optic neurons are traced to the corpus Luysii and the nucleus opticus tegmenti respectively.(7) that the optic fibers also terminate in the pretectal nucleus of the thaIamus.

本實驗曾將九隻白鼠之視網膜的各處用電燒法加以毁壞,然後用马氏染色法(Marchi's method)製成連續切片,详加研究,以斷定其枯萎的神经纖维所经之路徑及终止之點。 實驗结果如下: (一) 自網膜上部發出之神经纖維,位於視神经之外侧,由視神经叉之近尾段跨越於對面,又经對邊視神经通路之内側部,而一部终止於背外側膝體之后腹部,一部终止於上叠體之外侧部。 (二) 自網膜下部發出之纖維,位於視神经之下侧,由視神经叉之近首段跨越於對邊,再沿對邊視神经通路之外侧進行,而一部终止於背外側膝體之前背部,一部终止於上叠體之前内側部。 (三) 自網膜外侧部發出之纖维,位於視神经之外侧部,由視神经叉之近尾段跨越於對面,再沿對邊視神经通路之内側部進行,而一部终止於背外側膝體之后内側部,一部终止於上叠體之外側部。 (四) 自網膜内側部發出之纖维,位於视神经之内側,由视神经叉之近首叚跨越於對面,再经對邊視神经通路之外邊,而一部终止於背外側膝體之前外側部,一部终止於上叠體之内側部。 (五) 自網膜之外側邊緣部發出之纖维,位於视神经之外側,不到對邊,经本邊視神经通路之下半部而终止於背外侧膝體之中央。無及於上叠體者。 (六)...

本實驗曾將九隻白鼠之視網膜的各處用電燒法加以毁壞,然後用马氏染色法(Marchi's method)製成連續切片,详加研究,以斷定其枯萎的神经纖维所经之路徑及终止之點。 實驗结果如下: (一) 自網膜上部發出之神经纖維,位於視神经之外侧,由視神经叉之近尾段跨越於對面,又经對邊視神经通路之内側部,而一部终止於背外側膝體之后腹部,一部终止於上叠體之外侧部。 (二) 自網膜下部發出之纖維,位於視神经之下侧,由視神经叉之近首段跨越於對邊,再沿對邊視神经通路之外侧進行,而一部终止於背外側膝體之前背部,一部终止於上叠體之前内側部。 (三) 自網膜外侧部發出之纖维,位於視神经之外侧部,由視神经叉之近尾段跨越於對面,再沿對邊視神经通路之内側部進行,而一部终止於背外側膝體之后内側部,一部终止於上叠體之外側部。 (四) 自網膜内側部發出之纖维,位於视神经之内側,由视神经叉之近首叚跨越於對面,再经對邊視神经通路之外邊,而一部终止於背外側膝體之前外側部,一部终止於上叠體之内側部。 (五) 自網膜之外側邊緣部發出之纖维,位於视神经之外側,不到對邊,经本邊視神经通路之下半部而终止於背外侧膝體之中央。無及於上叠體者。 (六) 前副視神经通路,终止於路易斯氏體(Corpus Luysii),而后副视神经通路則终止於视底巢(

1.Homo-ionic colloidal clays (Mg-clay>H-clay>Be-clay>NH4-clay>K-clay>Na-clay. 3.The collcidal clays from yellow earth having lower SiO_2/R_2O_3 ratios fix more phosphate than that from purple brown...

1.Homo-ionic colloidal clays (Mg-clay>H-clay>Be-clay>NH4-clay>K-clay>Na-clay. 3.The collcidal clays from yellow earth having lower SiO_2/R_2O_3 ratios fix more phosphate than that from purple brown soil. 4.The phosphate fixation power of H-clay is markedly reduced after the removal of free irn and aluminum oxides. 5.In Ca-clay,the fixed phosphate was unstable.The association of phosphate with the exchangeable calcium is easily liberated by a very dilute acid solution.

土壤中磷酸固定作用每受外界环境之影响而有很大差异,如粘土矿物的种类,土壤反应,代换性盐等,黏土矿物与土壤反应对于磷酸固定前,人已有较详细之报告,本文特重视代换性盐之种类对于磷酸固定之关系。本试验以紫色土与黄壤为代表,均取于北碚。紫色土系发育于白垩纪自流井层紫色页岩,属中性而无石灰性反应,pH=7.0,黄壤系自侏罗纪灰色砂岩风化者,心土微红,pH=4.5—5.0,为避免过高之有机质,均采取心土,按照 Stoke 氏定律提取5微米(micron)直径之黏土粒,晒干后,分别以 N NaCl,N KGl,N NH_4Cl,N MgCl_2,N BaCl_2及 pH=3 HCl 处理,然后再以90%酒精洗涤至无氯为止,总之以不变更胶体之构造为原则,经处理之黏土,先分析其中之代换性盐以及盐代换总量,然后再测定其磷酸固定量,在酸性反应如 H~-黏土,其磷酸固定之主要因子为水化铁及水化铝,故再以 pH=2之盐酸淋洗,除去其中游离铁铝,再测定其磷酸固定量以资比较。按分析结果,黄壤胶体(<2 micron)中之(SiO_2)/(R_2O_3)为2.19,紫色土为2.56,前...

土壤中磷酸固定作用每受外界环境之影响而有很大差异,如粘土矿物的种类,土壤反应,代换性盐等,黏土矿物与土壤反应对于磷酸固定前,人已有较详细之报告,本文特重视代换性盐之种类对于磷酸固定之关系。本试验以紫色土与黄壤为代表,均取于北碚。紫色土系发育于白垩纪自流井层紫色页岩,属中性而无石灰性反应,pH=7.0,黄壤系自侏罗纪灰色砂岩风化者,心土微红,pH=4.5—5.0,为避免过高之有机质,均采取心土,按照 Stoke 氏定律提取5微米(micron)直径之黏土粒,晒干后,分别以 N NaCl,N KGl,N NH_4Cl,N MgCl_2,N BaCl_2及 pH=3 HCl 处理,然后再以90%酒精洗涤至无氯为止,总之以不变更胶体之构造为原则,经处理之黏土,先分析其中之代换性盐以及盐代换总量,然后再测定其磷酸固定量,在酸性反应如 H~-黏土,其磷酸固定之主要因子为水化铁及水化铝,故再以 pH=2之盐酸淋洗,除去其中游离铁铝,再测定其磷酸固定量以资比较。按分析结果,黄壤胶体(<2 micron)中之(SiO_2)/(R_2O_3)为2.19,紫色土为2.56,前者盐代换总量每百克黏土粒(<5 micron)为18m.e.后背为30m.e.,兹将试验所得结果归纳如次: 1.磷酸固定量每因土壤胶体之不同而有差异,由黄壤所提取之黏土其磷酸固定量亦较紫色土为高。 2.土壤之磷酸固定量,非特因土壤胶体之不同而有差异,即或同一黏土,其磷酸固定量亦因其代换性盐之不同而有差异,概言之,钠黏土之磷酸固定量为最小,钾黏土次之钡、铵黏土又次之,而以钙黏土为最大,其磷酸固定次序为: Ca-黏土>Mg-黏土>H-黏土>B(?)-黏土>NH_4-黏土>K-黏土>Na 黏土 3.各种不同代换性盐的粘土,加磷酸溶液后,其反应亦各不相同,H~-黏土之 pH 值为3.2—4.5,因其酸度较高,溶液中之游离铁与游离铝含量较多,是故磷酸固定量亦较高,如以淡盐酸(pH=2)洗涤,除去其中游离铁铝后,其磷酸固定量则大为减少,Na~-黏土与 K~-粘土之溶液中,因 OH 离子较多(pH=8.0—8.6),而磷酸钠与磷酸钾又为水溶性,故磷酸固定量为最少。Ca~-粘土与 Mg-粘土其反应属中性至微碱性,pH=7.5—8.0,因溶液中 Ca,Mg 离子浓度较高,磷酸则为此 Ca,Mg离子所固定,故在中性土壤中,磷酸固定以 Ca 为其主要在子,酸性土壤则以水化铁为其主要因子。 4.钙粘土所固定之磷酸,如以0.002 N H_2SO_4提取,其所固定之磷酸复可溶解,是项固定之磷酸与 Heck 所称「暂时固定磷酸」颇为相似。

Sodium di-n-butyl naphthalene sulfonate was prepared from n-butyl al-cohol, naphthalene and fuming sulfuric acid. Di-isoamyl naphthalene sul-fonate was prepared similarly. Their wetting properties were tested by the modified Draves method. Dibutyl naphthalene sulfonate was found to be avaluable wetting agent and could be made from cheap raw materials.

本文提供二正丁萘磺酸钠及二异戊萘磺酸钠之制备方法.前者可从正丁醇、萘、及发烟硫酸制得,后者可用异戊醇代替正丁醇.此两种萘磺酸钠之浸湿作用会用与Draves法相似之方法加以测定,并与土耳其红油之浸湿作用相比较.根据实验之结果,知二正丁萘磺酸钠之浸湿力较土耳其红油为高,乃良好之浸湿剂;但二异戊萘磺酸钠之浸湿力并不较土耳其红油为高.

 
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