Soil Physico-Chemical Properties and Microflora as Influenced by Bispyribac Sodium 10% SC in Transplanted Kharif Rice

The effects of bispyribac sodium 10% SC and butachlor 50% SC on soil physico-chemical properties and microflora in transplanted kharifrice were investigated over two seasons （2010 and 2011 ） Effects of the herbicide on bulk density, water holding capacity, moisture content, soil pH, organic matter content, electrical conductivity, as well as total nitrogen, available phosphorus and available potassium contents were analyzed along with microflora population （total bacteria, actinomycetes and fungi）. No significant changes in soil physico-chemical properties were observed. Herbicide treatments resulted in decreases in microbial counts initially. With the degradation of applied herbicides within a considerable time, the microflora populations even exceeded the initial count at 60 d after application of the herbicide.

Removal of S^(2-) ion from sodium aluminate solutions with sodium ferrite

The synthesis of sodium ferrite and its desulfurization performance in S2 -bearing sodium aluminate solutions were investigated. The thermodynamic analysis shows that the lowest temperature is about 810 K for synthesizing sodium ferrite by roasting the mixture of ferric oxide and sodium carbonate. The results indicate that the formation process of sodium ferrite can be completed at 1173 K for 60 min, meanwhile raising temperature and reducing NazCO3 particle size are beneficial to accelerating the formation of sodium ferrite. Sodium ferrite is an efficient desulfurizer to remove the S2- in aluminate solution, and the desulfurization rate can reach approximately 70% at 373 K for 60 min with the molar ratio of iron to sulfur of 1：1-1.5：1. Furthermore, the desulfurization is achieved by NaFeS2·2H2O precipitation through the reaction of Fe（OH）4 and S^2- in aluminate solution, and the desulfurization efficiency relies on the Fe（OH）4^- generated by dissolving sodium ferrite.

Separation of potassium from sodium in alkaline solution by solvent extraction with 4-tert-butyl-2-(α-methylbenzyl)phenol

This work investigated the separation of potassium from sodium in alkaline solution using substituted phenol-based extractants.Superior potassium extraction was achieved with 4-tert-butyl-2-(α-methylbenzyl)phenol(t-BAMBP)than 4-sec-butyl-2-(α-methylbenzyl)phenol(BAMBP).The optimum conditions for the extraction were 1 mol/L t-BAMBP,3:1 volumetric phase ratio(O/A),and two extraction stages.After cross-current extraction,the extraction ratio of potassium reached 90.8%.After scrubbing with deionised water at phase ratio of 4:1 and scrubbing stage of 4,a sodium scrubbing efficiency of 88.2%was obtained.After stripping using 1 mol/L H_(2)SO_(4) at phase ratio of 3:1,the stripping efficiency of potassium reached 94.2%.The potassium/sodium(K/Na)concentration ratio increased 14.3 times from 0.15 in the feed solution to 2.3 in the stripping solution.The efficient separation of potassium from sodium in alkaline solution was achieved via solvent extraction with t-BAMBP.

Room Temperature Phosphorescence of 1-Bromo-4-(bromoacetyl) naphthalene Induced by Sodium Deoxycholate

Sodium deoxycholate (NaDOC) could induce 1-bromo-4-(bromoacetyl) naphthalene (BBAN) to emit strong room temperature phosphorescence (RTP). Measurements of phosphore- scence spectra, peak intensity and polarization were used to investigate the solubilization of BBAN as a function of NaDOC concentration.

Synthesis of Sodium 2-[4(S)-4-Amido-3-oxo-2-isoxazolidinyl]-5-oxo-2-tetrahydrofurancarboxylate and Its Antibacterial Activities

Lactivicin,a novel inhibitor of bacterial cell wall synthesis,was isolated from the culture fil-trates of microorganism YK-258 and YK-422.It exhibits biological activities similar to those ofthe β-lactam antibiotics,although it does not have a β-lactam ring in its molecule.Since the discovery of lactivicin,hundreds of its derivatives have been synthesized.

Systematic pharmacology analysis of Sodium 8-(((carboxymethyl)amino)methyl)-4',7-bishydroxy-isoflavone-3'-sulfonate

The purpose of this study is to use the newly synthesized molecule Sodium 8-(((carboxymethyl)amino)methyl)-4',7-bishydroxy-isoflavone-3'-sulfonate(M)as a research object,the pharmacological mechanism of the molecule was analyzed by using a series of Systematic pharmacology methods.The results show that the M molecule has a higher drug-like DL value of 0.59 and better molecular property parameters,namely Hdon=4,Hacc=10 and AlogP=0.94;A total of 11 M molecules related targets,namely F2,ESR1,AR,F10,CA2,DPP4,CCNA2,PRSS1,CDK2,GSK3B and PTPN1;A total of 140 diseases are associated with M molecule targets,and these diseases are mainly related to cancer and cardiovascular diseases;A total of 52 pathways involve the pharmacological mechanisms of M molecules,which are mainly related to cancer and other related diseases;GO-enriched analysis showed that these targets are closely related to the regulation of peptidase activity and biological processes such as blood coagulation and hemostasis.This article clearly demonstrated the pharmacological mechanism of M molecule,which provides references for exploring the pharmacological mechanism of new compounds.

Crystal and Molecular Structure, and Spectral Characteristics of Sodium 3,5-Bis(Hydroxyimino)-1-Methyl-2,4,6-Trioxocyclohexanide

Sodium 3,5-bis(hydroxyimino)-1-methyl-2,4,6-trioxocyclohexanide C7H5N2NaO5 (I) has been isolated as the only product of the reaction of nitrosation of methylphloroglucinol. The structure of the titled compound has been determined from single crystal X-ray diffraction data. The hydrated C7H5N2NaO52.5H2O crystallizes in the monoclinic space group C2/c, with a(?) 16.408(3);b(?) 12.446(3);c(?) 13.716(3);(o) 126.34(3). The planar organic anion exists in a triketo-dihydroxyimino form with the C–O and C–N distances from 1.220(2) to 1.271(2)?? and from 1.292(2) to 1.293?? respectively. In the IR spectrum of I, the sharp absorption band occurred at 1681 cm-1 due to C=O stretching indicating the strong H-interactions. The correlations of theoretical (DFT-B3LYP/aug-cc-pVDZ) and experimental UV-vis absorption spectra in neutral and alkaline ethanolic solutions showed the existence of hydroxyimino-nitroso tautomerism while ionization of I.

分散固相萃取-液质联用法测定稻渔综合种养环境中四种农药残留

建立了液相色谱-串联质谱法(HPLC-MS/MS)同时测定稻渔综合种养环境中苄嘧磺隆、双草醚、吡蚜酮和氯虫苯甲酰胺的分析方法.水样过滤后直接进样,土壤和水产品经乙腈匀浆提取,C18吸附剂净化.结果表明,在不同基质中,4种农药在各自的线性范围内线性关系良好(R2≥0. 995);水中氯虫苯甲酰胺的检出限为0.10μg·kg^-1,其它3种为0.05μg·kg^-1;土壤和水产品中氯虫苯甲酰胺的检出限(LOD)为0.20μg·kg^-1,其它3种为0.10μg·kg^-1;在不同添加水平下,4种农药的平均回收率为77.52%-93.86%,相对标准偏差(RSD)为3.73%-11.09%.

基于QuEChERS-液相色谱-串联质谱法测定稻米中嘧草醚和双草醚残留

采用改良的QuEChERS-液相色谱-串联质谱(LC-MS/MS)技术,建立了稻米中嘧草醚和双草醚残留量的检测方法。样品经酸化乙腈提取,由十八烷基键合硅胶(C18)吸附剂净化。以0.1%(体积分数)甲酸水(含5 mmol/L乙酸铵)-乙腈为流动相进行梯度洗脱,经ZORBAX SB C18色谱柱实现目标化合物的基线分离。采用电喷雾正离子(ESI+)模式扫描,动态多反应监测(dynamic MRM)技术定性分析,外标法定量。结果表明:在稻米基质中,嘧草醚和双草醚在各自的线性范围内线性关系良好(r2≥0.996);嘧草醚和双草醚的检出限(LOD)分别为0.8和3μg/kg。在3个添加水平下,嘧草醚和双草醚的平均回收率分别为76.6%~85.6%和73.0%~86.7%,相对标准偏差(RSD)分别为0.9%~3.4%和1.2%~5.5%(n=6)。该方法简便、快速、灵敏,适用于稻米中嘧草醚和双草醚的同时分析。

高效除草剂双草醚中间体2,6-双(4,6-二甲氧嘧啶氧基)苯甲酸的合成

以2,6-二羟基苯甲酸为原料,与无水甲醇在浓硫酸或三氟化硼-乙醚的催化下制备2,6-二羟基苯甲酸甲酯,收率分别为43.5%、46%;2,6-二羟基苯甲酸甲酯再与4,6-二甲氧基-2-甲磺酰嘧啶(DMSP)在碳酸钾丙酮条件下反应生成2,6-双(4,6-二甲氧嘧啶氧基)苯甲酸甲酯,收率91.5%;所得中间体经20%的氢氧化钾水溶液水解后由0.7%的柠檬酸酸化后生成2,6-双(4,6-二甲氧嘧啶氧基)苯甲酸,收率72%。

四水合1,1'-二羟基-5,5'-联四唑钠盐的合成、晶体结构及性能

以二氯乙二肟为起始原料,通过一锅法合成了四水合1,1'-二羟基-5,5'-联四唑钠盐(SBTD·4H2O),并用红外、元素分析、扫描电子显微镜对其进行了表征,测试了目标化合物的单晶结构,结果表明其属于三斜晶系,P-1空间群,晶胞参数为a=5.6440(11),b=6.4476(17),c=8.303(11),α=100.131(5)°,β=96.789(3)°,γ=112.157(3)°,V=1,Dc=1.761 g·cm-3,F(000)=146,μ(Mo Kα)=0.227 mm-1。采用热重-差示扫描量热联用(TG-DSC)对其进行了热行为分析,在加热速率为10 K·min-1的条件下,该化合物从83.9℃开始失去结晶水,368.1℃开始分解,分解峰值温度为398.6℃,热稳定性良好。依据GJB772A-1997对SBT D·4H2O的感度进行了测试,撞击感度H50>100 cm,摩擦感度为0%,这表明其对机械撞击和摩擦不敏感。

FDP对病毒性脑炎患儿脑脊液中NSE、TNF-α水平的影响及其临床意义

目的本研究力争通过予重症病毒性脑炎患儿FDP的应用与否,判定其对脑脊液中NSE、TNF-α水平的影响,来评价FDP应用于病毒性脑炎治疗的临床意义。方法将病毒性脑炎患儿随机地分配号分为治疗组和对照组,除基础治疗外,治疗组立即加用FDP15天,与对照组分别测量治疗前后脑脊液中NSE、TNF-α水平。均采取酶联免疫吸附法(ELISA)测定。结果两组治疗前脑脊液NSE、TNF-α水平平均明显升高两组间相比无统计学意义,两组自身前后比较NSE、TNF-α水平有显著性差异(P<0.01),治疗后两组中两项指标相比亦有统计学意义(P<0.05)。结论FDP对病脑患儿治疗前后脑脊液中NSE、TNF-α水平变化有统计学意义及临床应用意义。

植物油助剂GY-Tmax对双草醚和氰氟草酯的增效作用和安全性的影响

以稗草和千金子为供试杂草,以南梗9108、南京11、K两优10号为供试水稻,通过室内整株生测法研究助剂GY-Tmax对双草醚、氰氟草酯防效和对水稻安全性的影响。结果表明,添加90 mL/667 m^2助剂GY-Tmax后,双草醚对3~4叶期稗草的ED90由3. 651 1 g a. i./667 m^2降至0. 932 9 g a. i./667 m^2,这表明助剂GY-Tmax明显增加了双草醚对稗草的防效;双草醚对千金子的防效较差,且助剂GY-Tmax对双草醚防除千金子无明显增效作用。添加90 mL/667 m^2助剂GY-Tmax后,氰氟草酯对3~4叶期稗草和千金子的防效均有所提高,氰氟草酯对稗草的ED90由10. 903 5 g a. i./667 m^2降至5. 231 1 g a. i./667 m^2,对千金子的ED_(90)由6. 840 0 g a. i./667 m^2降至2. 873 6 g a. i./667 m^2。添加90 mL/667 m^2助剂GY-Tmax后,双草醚和氰氟草酯对南梗9108、南京11、K两优10号水稻的安全性与不添加助剂时相当。

PPAR -γ激动剂对 LPS 诱导的小鼠 ARDS 肺泡上皮钠通道-γ亚基的调控

目的：探讨过氧化物酶增殖体活化受体-γ（ PPAR-γ）激动剂对LPS诱导的小鼠ARDS的保护作用及其对肺泡上皮细胞钠通道-γ亚基（ ENaC-γ）的调控作用。方法40只雄性BALB/C小鼠随机分为对照组（ Control组）、模型组（ LPS组）、罗格列酮治疗组（ RGZ组，LPS＋罗格列酮）及GW9662干预组（ GW9662组，LPS＋GW9662＋罗格列酮），每组10只。处理后收集相关标本，ELISA测定肺泡灌洗液（ BALF）中IL-1β和TNF-α水平。肺组织湿/干比（ W/D）测定肺水肿程度。 HE染色观察肺组织病理变化并进行肺组织损伤评分。用免疫组织化学法和Western blot测定肺组织ENaC-γ蛋白的表达。 RT-PCR测定ENaC-γmRNA的表达。结果与Control组比较，LPS组、RGZ组和GW9662组中IL-1β和TNF-α水平、W/D值、HE染色肺组织损伤程度及评分明显升高（ P＜0．05）；与LPS组比较，RGZ组各指标水平及肺损伤评分明显下降（P＜0．05），但LPS组和GW9662组比较差异无统计学意义（P＞0．05）。 LPS造模后，LPS组（210±15IOD，0．18±0．02，0．22±0．04）、RGZ组（450±30IOD，0．43±0．03，0．45±0．03）、GW9662组（235±35IOD，0．21±0．03，0．25±0．02）肺组织ENaC-γ蛋白和mRNA的表达明显低于Control组（600±25IOD，0．64±0．01，0．67±0．02，P＜0．05），RGZ组与LPS组和GW9662比较差异有统计学意义（P＜0．05），但LPS组和GW9662组比较差异无统计学意义（P＞0．05）。结论 PPAR-γ受体激动剂可能从转录水平上调肺泡ENaC-γ的表达，从而减轻LPS诱导的小鼠ARDS肺水肿程度，发挥保护性作用。

OBSERVATION OF THE EFFECT OF S－（－）USNIC ACID SODIUM ON TRICHOMONAS VAGINALIS BY TRANSMISSION ELECTRON MICROSCOPE

This paper reports the ultrastructural changes of trichomonas vaginaiis (T. vag. ) under the action of s-(-)usnic acid sodium in vitro. These changes can be shown by the following results:At first, the degranulation of the rough endoplasmic reticulum (RER) took place, the polyribosomes disaggregated. And then, the Golgi complex and the endoplasmic reticulum dilated. The cytoplasmic matrix presented and inhomogeneous apperance. Finally, the biomembrane loosed and fractured.The cell nuclei presented the karyorrhexis.

Preparation of Single Phase Na-X Zeolite from Oil Shale Ash by Melting Hydrothermal Method

A single phrase Na - X zeolite was synthesized from pretreated oil shale ash by alkaline fusion and hydrotherreal treatment. Eff3cts of the NaOH concentration, crystallization time ant temperature on the formation of Na-X zeolite were studied in detail. The single phase Na- X zeolite powders can. be prepared by alkaline fusion o.f pretreated oil shale ash at 600 ℃ .for 1 h, and crystalli-zation at 80 - 100 ℃ .for 8 - 10 h with NaOH concentration of 3 -3. 5 tool · L-1. Na - A zeolite appears when decreasing NaOH concentration, crystallization time or temperature, ant an unnamed zeolite emerges when prolonging crystallization time or raising crystalli-zation, temperature. SEM micrographs suggest that the aggregates of Na-X zeolite particles have perfect dispersity and uniform granular with about 1.5 μm in size, and most of the Na-X zeolite crystals display a regular octahedral structure with the size of about 500 nm. The specific surface area of the powders with single Na-X zeolite phase reaches the maximum value of 488. 163 2 m2· g -1, larger than that of multiple zeolite powders.

Comparative effects of α2δ-1 ligands in mouse models of colonic hypersensitivity

AIM: To investigate anti-hypersensitive effects of α2δ-1 ligands in non-inflammatory and inflammationassociated colonic hypersensitivity(CHS) mouse models.METHODS: To induce an inflammation-associated CHS, 1% dextran sulfate sodium(DSS) was administered to C57Bl/6J male mice, in drinking water, for 14 d. Regarding the non-inflammatory neonatal maternal separation(NMS)-induced CHS model, wild-type C57BI/6J pups were isolated from their mother from day 2 to day 14(P2 to P14), three hours per day(from 9:00 a.m. to 12:00 p.m.). Colorectal distension was performed by inflating distension probe from 20 μL to 100 μL by 20 μL increment step every 10 s. After a first colorectal distension(CRD), drugs were administered subcutaneously, in a cumulative manner,(Gabapentin at 30 mg/kg and 100 mg/kg; Pregabalin at 10 mg/kg and 30 mg/kg; Carbamazepine at 10 mg/kg and 30 mg/kg) and a second CRD was performed one hour after each injection.RESULTS: The visceromotor response(VMR) to CRD was increased by our NMS paradigm protocol in comparison to non-handled(NH) mice, considering the highest distension volumes(80 μL: 0.783 ± 0.056 mV /s vs 0.531 ± 0.034 m V/s, P < 0.05 and 100 μL: 1.087 ± 0.056 m V/s vs 0.634 ± 0.038 m V/s, P < 0.05 for NMS and NH mice, respectively). In the inflammationassociated CHS, DSS-treated mice showed a dramatic and significant increase in VMR at 60 and 80 μL distension volumes when compared to control mice(60 μL: 0.920 ± 0.079 m V/s vs 0.426 ± 0.100 m V/s P < 0.05 and 80 μL: 1.193 ± 0.097 mV /s vs 0.681 ± 0.094 mV /s P < 0.05 for DSS- and Water-treated mice, respectively). Carbamazepine failed to significantly reduce CHS in both models. Gabapentin significantly reduced CHS in the DSS-induced model for both subcutaneous injections at 30 or 100 mg/kg. Pregabalin s i g n i f i c a n t l y r e d u c e d V M R t o C R D i n t h e n o n-inflammatory NMS-induced CHS model for the acute subcutaneous administration of the highest cumulative dose(30 mg/kg) and significantly reduced CHS in lowdose DSS-treated mice in a dose-dependent manner. Finally, the percent decrease of AUC induced by acute GBP or Pregabalin treatment were higher in the inflammatory DSS-induced CHS model in comparison to the non-inflammatory NMS-induced CHS model.CONCLUSION: This preclinical study demonstrates α2δ-1 ligands efficacy on inflammation-associated CHS, highlighting their potential clinical interest in patients with chronic abdominal pain and moderate intestinal inflammation.

Synthesis of Intermediate N-Chloroformyl-N-[4-(trifluoromethoxy)phenyl]Methyl Carbamate of Indoxacarb

[Objective]The paper was to study a synthetic method suitable for industrial production of intermediate N-Chloroformyl-N-[4-(trifluoromethoxy)phenyl]methyl carbamate of indoxacarb.[Method]Using 4-trifluoromethoxy aniline as the starting material,[4-(trifluoromethoxy)phenyl]carbamate was synthesized by homogeneous formylation method without acid-binding agent.Subsequently,it was reacted with sodium methoxide/potassium methoxide by reactive distillation to obtain[4-(trifluoromethoxy)phenyl]carbamate ammonium sodium/potassium,then directly reacted with triphosgene to obtain crude products of N-carbonochloridoyl-N-[4-(trifluoromethoxy)phenyl]carbamate;finally,competing product was obtained by recrystallization.[Result]The intermediate N-chloroformyl-N-[4-(trifluoromethoxy)phenyl]carbamate was synthesized by the method.The content of products was higher than 98%.The yield of product reached above 96%(calculated by 4-trifluoromethoxy aniline).[Conclusion]The method used for the synthesis of intermediate N-chloroformyl-N-[4-(trifluoromethoxy)phenyl]methyl carbamate was simple,with less three wastes,higher safety and lower cost.

One-Pot Three-Component Synthesis of N-Arylmethyl-4-(7-cyclohepta-1,3,5-trienyl)anilines

We report a one-pot three-component synthesis of N-arylmethyl-4-(7-cyclohepta-1,3,5-trienyl)anilines by using various aromatic imines, tropylium tetrafluoroborate, and sodium tetrahydroborate in the presence of imidazole as activator.

The Releasing Effects of Captopril and Sodiun Nitroprusside on Endothelin-1 in Vascular Smooth Muscle Cell

Objective To investigate the influence of captoprial and SNP on the release of ET -1 in cultured VSMC of rats. Methods Measurement of endothelin - 1 levels by radioimmljnoassay in various concentrations of captopril and/or sodium nitroprusside in cultured vascular smooth muscle cell (VSMC) of rats. Results Both captopril and SNP could reduce the high ET - 1 levels of VSMC which were caused by Ang Ⅱ. There was a linear relationship between Ang Ⅱlevels and ET -1 production ( r = 0. 760, P <0. 001 ) . Conclusion Endothelin - 1 may accelerate the formation and development of atherosclerosis through inhibiting endogenous NO production by VSMC. ACEI or NO inhibition of ET -1 release could reduce atherosclerosis formation.