Low dose of samarium chloride was injected into rat(0.05 mg/kg) every other day through three different routes i.e. peritioneal injection, gastric slysis and caudal vein injection. One month later. Serum GH, THT3, THT...Low dose of samarium chloride was injected into rat(0.05 mg/kg) every other day through three different routes i.e. peritioneal injection, gastric slysis and caudal vein injection. One month later. Serum GH, THT3, THT4 and insulin were determined by using radio-immunity assay. The results demonstrated that both serum GH and insulin raised remarkably in experimental groups. THT4 raised only in peritioneal injection group. Besides these, the four different serum hormones showed no obvious change when the dose of samarium chloride decreased to 0.025 mg/kg with caudal vein injection.展开更多
The levels of thyroxine (T3, T4) and thyroid stimulating hormone (TSH) in rat serum were measured by radioimmunoassay, and also ultrastructure of the thyroid gland and adenohypophyseal cell were examined by transmissi...The levels of thyroxine (T3, T4) and thyroid stimulating hormone (TSH) in rat serum were measured by radioimmunoassay, and also ultrastructure of the thyroid gland and adenohypophyseal cell were examined by transmission electronic microscopy (TEM) after low concentration (0. 05 mg/kg) of samarium chloride (SmCl3) administration by intraperitoneal, oral and tail intravenous routes. The results showed that the level of T4 in rat serum increased and the level of TSH unchanged by the intraperitoneal administration, and the levels of T3, T4 and TSH did not increase by the oral and tail intravenous administration. The evidences mentioned above were in accord with the morphological changes of thyroid follicular epithelial cells andadenohypophysis thyrotroph observed under electronic microscope in a sense.展开更多
The process for removal of samarium from NdCl_3 solution containing a little samarium by solvent extrac-tion with unsaponated Di (2-ethyl hexyl) orthosphoric acid (DEHPA) at acidic range is reported. The in-dustri...The process for removal of samarium from NdCl_3 solution containing a little samarium by solvent extrac-tion with unsaponated Di (2-ethyl hexyl) orthosphoric acid (DEHPA) at acidic range is reported. The in-dustrial experiments have been completed on a production line of 150 t Nd_2O_3 per annum in the Baotou ThirdRare Earth Factory. As a result of 9 step counter current extraction , Sm_2 O_3 content in Nd_2 O_3 drops down to0. 08 % from 0. 5% , the purity of neodymium oxide is over 99. 5% and the direct recovery of Nd_2O_3 is 92%～ 93% .展开更多
A ternary complex [Sm(o-NBA)3phen]2 (o-NBA: o-Nitrobenzoate; phen: 1,10-phenanthroline) was synthesized and characterized by elemental analysis, IR, molar conductance, and thermogravimetric analysis. The dissolution e...A ternary complex [Sm(o-NBA)3phen]2 (o-NBA: o-Nitrobenzoate; phen: 1,10-phenanthroline) was synthesized and characterized by elemental analysis, IR, molar conductance, and thermogravimetric analysis. The dissolution enthalpies of SmCl3·6H2O(s), o-HNBA(s) and phen·H2O(s) in mixed solvent (VHCl :VDMF :VDMSO=2:2:1) were determined by calorimetry at 298.15 K. The enthalpy change of the reaction was determined to be rHmΔ θ=252.49±1.60 kJ/mol. Using the relevant data in the literature and a thermochemical recycle...展开更多
[Sm（C7H5O3）2（C4H6NO2S）]·2H2O was synthesized from the reaction of samarium chloride hexahydrate with salicylic acid and thioproline,and characterized by IR,elemental analysis and thermogravimatric analysis.Th...[Sm（C7H5O3）2（C4H6NO2S）]·2H2O was synthesized from the reaction of samarium chloride hexahydrate with salicylic acid and thioproline,and characterized by IR,elemental analysis and thermogravimatric analysis.The standard molar enthalpies of the solutions of SmCl3·6H2O（s）,2[C7H6O3（s）],[C4H7NO2S（s）] and [Sm（C7H5O3）2·（C4H6NO2S）·2H2O（s）] in a mixed solvent of absolute ethyl alcohol,dimethyl formamide（DMF） and 3 mol/L HCl were,respectively,determined by calorimetry to be ΔsHm^Θ [SmCl3·6H2O（s）,298.15 K]=（-46.68±0.15） kJ/mol,ΔsHm^Θ [2C7H6O3（s）,298.15 K]=（25.19±0.02） kJ/mol,ΔsHm^Θ [C4H7NO2S（s）,298.15 K]=（16.20±0.17） kJ/mol and ΔsHm^Θ {[Sm（C7H5O3）2（C4H6NO2S）]·2H2O（s）,298.15 K}=（-81.24±0.67） kJ/mol.The enthalpy change of the reaction SmCl3·6H2O（s）＋2C7H6O3（s）＋C4H7NO2S（s）=[Sm（C7H5O3）2（C4H6NO2S）]·2H2O（s）＋3HCl（g）＋4H2O（l） was determined to be ΔrHm^Θ =（123.45±0.71） kJ/mol.From the data in the literature,the standard molar formation enthalpy of [Sm（C7H5O3）2（C4H6NO2S）]·2H2O（s） was estimated to be Δf Hm^Θ {[Sm（C7H5O3）2（C4H6NO2S）]·2H2O（s）,298.15 K}=（-2912.03±3.1） kJ/mol through Hess＇ law.展开更多
The reduction of diphenyl ditelluride by the Sm/CrCl_3(cat.) system led to atelluride anion. This species reacted with acid chlorides, alkyl halides, and α,β-unsaturatedenoates or α,β-unsaturated ene nitriles to a...The reduction of diphenyl ditelluride by the Sm/CrCl_3(cat.) system led to atelluride anion. This species reacted with acid chlorides, alkyl halides, and α,β-unsaturatedenoates or α,β-unsaturated ene nitriles to afford telluroesters and unsymniet-ricalphenyltellurides, respectively, in moderate to good yields under mild and neutral conditions.展开更多
文摘Low dose of samarium chloride was injected into rat(0.05 mg/kg) every other day through three different routes i.e. peritioneal injection, gastric slysis and caudal vein injection. One month later. Serum GH, THT3, THT4 and insulin were determined by using radio-immunity assay. The results demonstrated that both serum GH and insulin raised remarkably in experimental groups. THT4 raised only in peritioneal injection group. Besides these, the four different serum hormones showed no obvious change when the dose of samarium chloride decreased to 0.025 mg/kg with caudal vein injection.
文摘The levels of thyroxine (T3, T4) and thyroid stimulating hormone (TSH) in rat serum were measured by radioimmunoassay, and also ultrastructure of the thyroid gland and adenohypophyseal cell were examined by transmission electronic microscopy (TEM) after low concentration (0. 05 mg/kg) of samarium chloride (SmCl3) administration by intraperitoneal, oral and tail intravenous routes. The results showed that the level of T4 in rat serum increased and the level of TSH unchanged by the intraperitoneal administration, and the levels of T3, T4 and TSH did not increase by the oral and tail intravenous administration. The evidences mentioned above were in accord with the morphological changes of thyroid follicular epithelial cells andadenohypophysis thyrotroph observed under electronic microscope in a sense.
文摘The process for removal of samarium from NdCl_3 solution containing a little samarium by solvent extrac-tion with unsaponated Di (2-ethyl hexyl) orthosphoric acid (DEHPA) at acidic range is reported. The in-dustrial experiments have been completed on a production line of 150 t Nd_2O_3 per annum in the Baotou ThirdRare Earth Factory. As a result of 9 step counter current extraction , Sm_2 O_3 content in Nd_2 O_3 drops down to0. 08 % from 0. 5% , the purity of neodymium oxide is over 99. 5% and the direct recovery of Nd_2O_3 is 92%～ 93% .
基金supported by the National Natural Sciences Foundation of China (20773034)the Natural Science Foundation of Hebei Province (B2007000237)
文摘A ternary complex [Sm(o-NBA)3phen]2 (o-NBA: o-Nitrobenzoate; phen: 1,10-phenanthroline) was synthesized and characterized by elemental analysis, IR, molar conductance, and thermogravimetric analysis. The dissolution enthalpies of SmCl3·6H2O(s), o-HNBA(s) and phen·H2O(s) in mixed solvent (VHCl :VDMF :VDMSO=2:2:1) were determined by calorimetry at 298.15 K. The enthalpy change of the reaction was determined to be rHmΔ θ=252.49±1.60 kJ/mol. Using the relevant data in the literature and a thermochemical recycle...
基金Supported by the Hunan Provincial Educational Ministry Foundation(No.04C635)the Hunan Provincial Natural Sciences Foundation of China(No.08JJ3014)
文摘[Sm（C7H5O3）2（C4H6NO2S）]·2H2O was synthesized from the reaction of samarium chloride hexahydrate with salicylic acid and thioproline,and characterized by IR,elemental analysis and thermogravimatric analysis.The standard molar enthalpies of the solutions of SmCl3·6H2O（s）,2[C7H6O3（s）],[C4H7NO2S（s）] and [Sm（C7H5O3）2·（C4H6NO2S）·2H2O（s）] in a mixed solvent of absolute ethyl alcohol,dimethyl formamide（DMF） and 3 mol/L HCl were,respectively,determined by calorimetry to be ΔsHm^Θ [SmCl3·6H2O（s）,298.15 K]=（-46.68±0.15） kJ/mol,ΔsHm^Θ [2C7H6O3（s）,298.15 K]=（25.19±0.02） kJ/mol,ΔsHm^Θ [C4H7NO2S（s）,298.15 K]=（16.20±0.17） kJ/mol and ΔsHm^Θ {[Sm（C7H5O3）2（C4H6NO2S）]·2H2O（s）,298.15 K}=（-81.24±0.67） kJ/mol.The enthalpy change of the reaction SmCl3·6H2O（s）＋2C7H6O3（s）＋C4H7NO2S（s）=[Sm（C7H5O3）2（C4H6NO2S）]·2H2O（s）＋3HCl（g）＋4H2O（l） was determined to be ΔrHm^Θ =（123.45±0.71） kJ/mol.From the data in the literature,the standard molar formation enthalpy of [Sm（C7H5O3）2（C4H6NO2S）]·2H2O（s） was estimated to be Δf Hm^Θ {[Sm（C7H5O3）2（C4H6NO2S）]·2H2O（s）,298.15 K}=（-2912.03±3.1） kJ/mol through Hess＇ law.
基金theNationalNaturalScienceFoundationofChina (No .2 9872 0 10 )theNaturalScienceFoundationofZhejiangProvince China (No .2 980 6 7)
文摘The reduction of diphenyl ditelluride by the Sm/CrCl_3(cat.) system led to atelluride anion. This species reacted with acid chlorides, alkyl halides, and α,β-unsaturatedenoates or α,β-unsaturated ene nitriles to afford telluroesters and unsymniet-ricalphenyltellurides, respectively, in moderate to good yields under mild and neutral conditions.
