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Pesquisa : D01.625.400.100.150 [Categoria DeCS]
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[PMID]:28873600
[Au] Autor:Cheng C; Di S; Zhang W; Chen L; Tian Z; Zhou Z; Diao J
[Ad] Endereço:Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing 100193, China.
[Ti] Título:Determination of cyanamide residue in 21 plant-derived foods by liquid chromatography-tandem mass spectrometry.
[So] Source:Food Chem;239:529-534, 2018 Jan 15.
[Is] ISSN:0308-8146
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Cyanamide is widely used in agriculture, and has a modest toxicity in humans. In the present study, a simple, sensitive, and widely applicable method for detecting cyanamide in 21 plant-derived foods was developed. In the proposed method, after the samples were homogenized and extracted, the method employs clean-up with multi-walled carbon nanotubes (MWCNTs) and derivatization with dansyl chloride. The derivatized sample extracts were quantified with liquid chromatography-tandem mass spectrometry (LC-MS/MS). The mean recoveries were in the range of 67.4%-107.1%, and the RSDs were between 1.0% and 17.8%. The quantification limit in shiitake‬, green tea and chinese pepper was 0.05mg/kg, and in others 18 plant-derived foods was 0.01mg/kg. Among the data of 5 different laboratories, the repeatability limits (r) ranged from 0.0010 to 0.0941, and the reproducibility limits (R) ranged from 0.0031 to 0.2667. Moreover, the repeatability among different testing personnels in the same laboratory also has been examined.
[Mh] Termos MeSH primário: Contaminação de Alimentos
[Mh] Termos MeSH secundário: Cromatografia Líquida
Cianamida
Seres Humanos
Nanotubos de Carbono
Reprodutibilidade dos Testes
Espectrometria de Massas em Tandem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Nanotubes, Carbon); 420-04-2 (Cyanamide)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170907
[St] Status:MEDLINE


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[PMID]:28587532
[Au] Autor:Lamie PF; Philoppes JN; Azouz AA; Safwat NM
[Ad] Endereço:a Department of Pharmaceutical Organic Chemistry , Beni Suef University , Beni Suef , Egypt.
[Ti] Título:Novel tetrazole and cyanamide derivatives as inhibitors of cyclooxygenase-2 enzyme: design, synthesis, anti-inflammatory evaluation, ulcerogenic liability and docking study.
[So] Source:J Enzyme Inhib Med Chem;32(1):805-820, 2017 Dec.
[Is] ISSN:1475-6374
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Nineteen new compounds containing tetrazole and/or cyanamide moiety have been designed and synthesised. Their structures were confirmed using spectroscopic methods and elemental analyses. Anti-inflammatory activity for all the synthesised compounds was evaluated in vivo. The most active compounds 4c, 5a, 5d-f, 8a and b and 9a and b were further investigated for their ulcerogenic liability and analgesic activity. Pyrazoline derivatives 9b and 8b bearing trimethoxyphenyl part and SO NH or SO Me pharmacophore showed equal or nearly the same ulcerogenic liability (UI: 0.5, 0.75, respectively), to celecoxib (UI: 0.50). Most of tested compounds showed potent central and/or peripheral analgesic activities. Histopathological investigations were done to evaluate test compounds effect on rat's gastric tissue. The obtained results were in consistent with the in vitro data on COX evaluation. Docking study was also done for all the target compounds inside COX-2-active site.
[Mh] Termos MeSH primário: Anti-Inflamatórios não Esteroides/farmacologia
Cianamida/farmacologia
Inibidores de Ciclo-Oxigenase 2/farmacologia
Ciclo-Oxigenase 2/metabolismo
Úlcera Gástrica/tratamento farmacológico
Tetrazóis/farmacologia
[Mh] Termos MeSH secundário: Animais
Anti-Inflamatórios não Esteroides/síntese química
Anti-Inflamatórios não Esteroides/química
Cianamida/síntese química
Cianamida/química
Inibidores de Ciclo-Oxigenase 2/síntese química
Inibidores de Ciclo-Oxigenase 2/química
Relação Dose-Resposta a Droga
Desenho de Drogas
Edema/tratamento farmacológico
Simulação de Acoplamento Molecular
Estrutura Molecular
Ratos
Ovinos
Úlcera Gástrica/induzido quimicamente
Relação Estrutura-Atividade
Tetrazóis/síntese química
Tetrazóis/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Inflammatory Agents, Non-Steroidal); 0 (Cyclooxygenase 2 Inhibitors); 0 (Tetrazoles); 420-04-2 (Cyanamide); EC 1.14.99.1 (Cyclooxygenase 2)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170906
[Lr] Data última revisão:
170906
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170608
[St] Status:MEDLINE
[do] DOI:10.1080/14756366.2017.1326110


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[PMID]:28417938
[Au] Autor:Prabhath MRR; Williams L; Bhat SV; Sharma P
[Ad] Endereço:School of Chemistry, Joseph Banks Laboratories, University of Lincoln, Lincoln LN6 7DL, UK. ranga_prabhath@yahoo.com.
[Ti] Título:Recent Advances in Cyanamide Chemistry: Synthesis and Applications.
[So] Source:Molecules;22(4), 2017 Apr 12.
[Is] ISSN:1420-3049
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:The application of alkyl and aryl substituted cyanamides in synthetic chemistry has diversified multi-fold in recent years. In this review, we discuss recent advances (since 2012) in the chemistry of cyanamides and detail their application in cycloaddition chemistry, aminocyanation reactions, as well as electrophilic cyanide-transfer agents and their unique radical and coordination chemistry.
[Mh] Termos MeSH primário: Química
Cianamida/química
[Mh] Termos MeSH secundário: Catálise
Técnicas de Química Sintética
Cianamida/síntese química
Ciclização
Metais/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Metals); 420-04-2 (Cyanamide)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170531
[Lr] Data última revisão:
170531
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170419
[St] Status:MEDLINE


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[PMID]:27639362
[Au] Autor:Yokoo K; Yamawaki K; Yoshida Y; Yonezawa S; Yamano Y; Tsuji M; Hori T; Nakamura R; Ishikura K
[Ad] Endereço:Shionogi Pharmaceutical Research Center, Shionogi & Co., Ltd., 1-1, Futaba-cho, 3-chome, Toyonaka, Osaka 561-0825, Japan. Electronic address: katsuki.yokoo@shionogi.co.jp.
[Ti] Título:Novel broad-spectrum and long-acting parenteral cephalosporins having an acyl cyanamide moiety at the C-3 terminal: Synthesis and structure-activity relationships.
[So] Source:Eur J Med Chem;124:698-712, 2016 Nov 29.
[Is] ISSN:1768-3254
[Cp] País de publicação:France
[La] Idioma:eng
[Ab] Resumo:A series of novel 7ß-[2-(2-aminothiazole-4-yl)-2-(Z)-(alkoxyimino)acetamido]-cephalosporins having pyridinium-linked acyl cyanamide at the C-3 position were prepared and their antibacterial activities and pharmacokinetics profiles were evaluated. Most of the compounds exhibited potent antibacterial activities against penicillin-resistant Streptococcus pneumoniae (PRSP) and ß-lactamase non-producing penicillin-resistant Haemophilus influenzae (BLNAR). Introduction of a propenyl group between the cephalospoin core and the side chains at the C-3 position improved the pharmacokinetics profile. Among these compounds, 7ß-[2-(2-aminothiazole-4-yl)-2-(Z)- (alkoxyimino)acetamido]-3-(pyridin-1-ium-1-yl)prop-1-en-1-yl)cephalosporins (32j) showed well-balanced antibacterial activity against S. pneumoniae and H. influenzae which included resistant strains and also other Gram-positive or Gram-negative pathogens. Furthermore, 32j showed a long half-life comparable to that of Ceftriaxone in mice and monkeys.
[Mh] Termos MeSH primário: Bactérias/efeitos dos fármacos
Cefalosporinas/química
Cefalosporinas/farmacocinética
Cianamida/química
[Mh] Termos MeSH secundário: Animais
Anti-Infecciosos/química
Anti-Infecciosos/farmacocinética
Anti-Infecciosos/farmacologia
Cefalosporinas/farmacologia
Cianamida/farmacocinética
Cianamida/farmacologia
Modelos Animais de Doenças
Meia-Vida
Haplorrinos/metabolismo
Masculino
Camundongos
Testes de Sensibilidade Microbiana
Estrutura Molecular
Relação Estrutura-Atividade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Infective Agents); 0 (Cephalosporins); 420-04-2 (Cyanamide)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161107
[St] Status:MEDLINE


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[PMID]:27493184
[Au] Autor:Shaw AJ; Lam FH; Hamilton M; Consiglio A; MacEwen K; Brevnova EE; Greenhagen E; LaTouf WG; South CR; van Dijken H; Stephanopoulos G
[Ad] Endereço:Novogy, 85 Bolton Street, Cambridge, MA 02140, USA.
[Ti] Título:Metabolic engineering of microbial competitive advantage for industrial fermentation processes.
[So] Source:Science;353(6299):583-6, 2016 Aug 05.
[Is] ISSN:1095-9203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Microbial contamination is an obstacle to widespread production of advanced biofuels and chemicals. Current practices such as process sterilization or antibiotic dosage carry excess costs or encourage the development of antibiotic resistance. We engineered Escherichia coli to assimilate melamine, a xenobiotic compound containing nitrogen. After adaptive laboratory evolution to improve pathway efficiency, the engineered strain rapidly outcompeted a control strain when melamine was supplied as the nitrogen source. We additionally engineered the yeasts Saccharomyces cerevisiae and Yarrowia lipolytica to assimilate nitrogen from cyanamide and phosphorus from potassium phosphite, and they outcompeted contaminating strains in several low-cost feedstocks. Supplying essential growth nutrients through xenobiotic or ecologically rare chemicals provides microbial competitive advantage with minimal external risks, given that engineered biocatalysts only have improved fitness within the customized fermentation environment.
[Mh] Termos MeSH primário: Biocatálise
Biocombustíveis
Escherichia coli/metabolismo
Fermentação/genética
Microbiologia Industrial/métodos
Engenharia Metabólica
Nitrogênio/metabolismo
Triazinas/metabolismo
[Mh] Termos MeSH secundário: Cianamida/metabolismo
Evolução Molecular Direcionada
Escherichia coli/genética
Redes e Vias Metabólicas/genética
Fosfitos/metabolismo
Saccharomyces cerevisiae/genética
Saccharomyces cerevisiae/metabolismo
Yarrowia/genética
Yarrowia/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Biofuels); 0 (Phosphites); 0 (Triazines); 420-04-2 (Cyanamide); N3GP2YSD88 (melamine); N762921K75 (Nitrogen)
[Em] Mês de entrada:1609
[Cu] Atualização por classe:160805
[Lr] Data última revisão:
160805
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160806
[St] Status:MEDLINE
[do] DOI:10.1126/science.aaf6159


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[PMID]:27026261
[Au] Autor:Zheng J; Zhang Y; Wang D; Cui S
[Ad] Endereço:Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University , 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China.
[Ti] Título:Silver(I)-Mediated Phosphorylation/Cyclization Cascade of N-Cyanamide Alkenes for Divergent Access to Quinazolinones and Dihydroisoquinolinones.
[So] Source:Org Lett;18(8):1768-71, 2016 Apr 15.
[Is] ISSN:1523-7052
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:A silver(I)-mediated phosphorylation/cyclization radical cascade of N-cyanamide alkenes has been developed. The addition of in situ generated phosphorus radical to N-cyanamide alkenes triggers the cascade, resulting in late-stage cyclization toward divergent access to 4-quinazolinones and dihydroisoquinolinones. Both terminal and internal N-cyanamide alkenes are applicable in this protocol, and the cyclizations are consistent with Baldwin's rule.
[Mh] Termos MeSH primário: Alcenos/química
Cianamida/química
Quinazolinonas/química
Prata/química
[Mh] Termos MeSH secundário: Catálise
Ciclização
Estrutura Molecular
Fosforilação
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Alkenes); 0 (Quinazolinones); 3M4G523W1G (Silver); 420-04-2 (Cyanamide)
[Em] Mês de entrada:1609
[Cu] Atualização por classe:160415
[Lr] Data última revisão:
160415
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160331
[St] Status:MEDLINE
[do] DOI:10.1021/acs.orglett.6b00481


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[PMID]:26959003
[Au] Autor:Islamova RM; Dobrynin MV; Ivanov DM; Vlasov AV; Kaganova EV; Grigoryan GV; Kukushkin VY
[Ad] Endereço:Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia. r.islamova@spbu.ru.
[Ti] Título:bis-Nitrile and bis-Dialkylcyanamide Platinum(II) Complexes as Efficient Catalysts for Hydrosilylation Cross-Linking of Siloxane Polymers.
[So] Source:Molecules;21(3):311, 2016 Mar 05.
[Is] ISSN:1420-3049
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:cis- and trans-Isomers of the platinum(II) nitrile complexes [PtCl2(NCR)2] (R = NMe2, N(C5H10), Ph, CH2Ph) were examined as catalysts for hydrosilylation cross-linking of vinyl-terminated polydimethylsiloxane and trimethylsilyl-terminated poly(dimethylsiloxane-co-ethylhydrosiloxane) producing high quality silicone rubbers. Among the tested platinum species the cis-complexes are much more active catalysts than their trans-congeners and for all studied platinum complexes cis-[PtCl2(NCCH2Ph)2] exhibits the best catalytic activity (room temperature, c = 1.0 × 10(-4) mol/L, τpot-life 60 min, τcuring 6 h). Although cis-[PtCl2(NCCH2Ph)2] is less active than the widely used Karstedt's catalyst, its application for the cross-linking can be performed not only at room temperature (c = 1.0 × 10(-4) mol/L), but also, more efficiently, at 80 °C (c = 1.0 × 10(-4)-1.0 × 10(-5) mol/L) and it prevents adherence of the formed silicone rubbers to equipment. The usage of the cis- and trans-[PtCl2(NCR)2] complexes as the hydrosilylation catalysts do not require any inhibitors and, moreover, the complexes and their mixtures with vinyl- and trimethylsilyl terminated polysiloxanes are shelf-stable in air. Tested catalysts do not form colloid platinum particles after the cross-linking.
[Mh] Termos MeSH primário: Compostos Organoplatínicos/química
Siloxanas/síntese química
[Mh] Termos MeSH secundário: Varredura Diferencial de Calorimetria
Catálise
Reagentes para Ligações Cruzadas/química
Cianamida/química
Estrutura Molecular
Nitrilos/química
Siloxanas/química
Espectrofotometria Infravermelho
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Cross-Linking Reagents); 0 (Nitriles); 0 (Organoplatinum Compounds); 0 (Siloxanes); 420-04-2 (Cyanamide)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170213
[Lr] Data última revisão:
170213
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160310
[St] Status:MEDLINE


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[PMID]:26846501
[Au] Autor:Hopa C; Cokay I
[Ad] Endereço:Chemistry Department, Science and Literature Faculty, Balikesir University, Balikesir, Turkey.
[Ti] Título:Synthesis, structural characterization and thermal properties of a new copper(II) one-dimensional coordination polymer based on bridging N,N'-bis(2-hydroxybenzylidene)-2,2-dimethylpropane-1,3-diamine and dicyanamide ligands.
[So] Source:Acta Crystallogr C Struct Chem;72(Pt 2):149-54, 2016 Feb.
[Is] ISSN:2053-2296
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The design and synthesis of polymeric coordination compounds of 3d transition metals are of great interest in the search for functional materials. The coordination chemistry of the copper(II) ion is of interest currently due to potential applications in the areas of molecular biology and magnetochemistry. A novel coordination polymer of Cu(II) with bridging N,N'-bis(2-hydroxyphenyl)-2,2-dimethylpropane-1,3-diamine (H2L-DM) and dicyanamide (dca) ligands, catena-poly[[[µ2-2,2-dimethyl-N,N'-bis(2-oxidobenzylidene)propane-1,3-diamine-1:2κ(6)O,N,N',O':O,O']dicopper(II)]-di-µ-dicyanamido-1:2'κ(2)N(1):N(5);2:1'κ(2)N(1):N(5)], [Cu2(C19H20N2O2)(C2N3)2]n, has been synthesized and characterized by CHN elemental analysis, IR spectroscopy, thermal analysis and X-ray single-crystal diffraction analysis. Structural studies show that the Cu(II) centres in the dimeric asymmetric unit adopt distorted square-pyramidal geometries, as confirmed by the Addison parameter (τ) values. The chelating characteristics of the L-DM(2-) ligand results in the formation of a Cu(II) dimer with a double phenolate bridge in the asymmetric unit. In the crystal, the dimeric units are further linked to adjacent dimeric units through µ1,5-dca bridges to produce one-dimensional polymeric chains.
[Mh] Termos MeSH primário: Compostos de Benzilideno/química
Cobre/química
Cianamida/química
Diaminas/química
[Mh] Termos MeSH secundário: Cristalografia por Raios X
Ligações de Hidrogênio
Ligantes
Estrutura Molecular
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Benzylidene Compounds); 0 (Diamines); 0 (Ligands); 0 (N,N'-bis(2-hydroxybenzylidene)-2,2-dimethylpropane-1,3-diamine); 420-04-2 (Cyanamide); 789U1901C5 (Copper)
[Em] Mês de entrada:1606
[Cu] Atualização por classe:160205
[Lr] Data última revisão:
160205
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160206
[St] Status:MEDLINE
[do] DOI:10.1107/S2053229616000978


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[PMID]:26738601
[Au] Autor:Liu L; Sun C; Liu X; He X; Liu M; Wu H; Tang C; Jin C; Zhang Y
[Ad] Endereço:Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
[Ti] Título:Effect of calcium cyanamide, ammonium bicarbonate and lime mixture, and ammonia water on survival of Ralstonia solanacearum and microbial community.
[So] Source:Sci Rep;6:19037, 2016 Jan 07.
[Is] ISSN:2045-2322
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The inorganic nitrogenous amendments calcium cyanamide (CC), ammonia water (AW), and a mixture of ammonium bicarbonate with lime (A+L) are popularly used as fumigants to control soil-borne disease in China. However, it is unclear which of these fumigants is more effective in controlling R. solanacearum. This present study compared the efficiencies of the three nitrogenous amendments listed above at four nitrogen levels in suppressing the survival of R. solanacearum in soil. The CC showed the best ability to suppress R. solanacearum due to its highest capacity to increase soil and NO2(-) contents and pH. However, AW was more suitable to controlling bacterial wilt caused by R. solanacearum because it had a lower cost and its application rate of 0.25 g N kg(-1) soil could effectively suppress the survival of R. solanacearum. Additionally, soil microbial activity and community populations were restored to their initial state four weeks after the application of each fumigant, indicating that the three fumigants had few detrimental impacts on soil microbial activity and community structure with an exception of the suppression of R. solanacearum. The present study provides guidance for the selection of a suitable alkaline nitrogenous amendment and its application rate in controlling bacterial wilt.
[Mh] Termos MeSH primário: Bicarbonatos/farmacologia
Compostos de Cálcio/farmacologia
Cianamida/farmacologia
Óxidos/farmacologia
Ralstonia solanacearum/efeitos dos fármacos
[Mh] Termos MeSH secundário: Concentração de Íons de Hidrogênio
Viabilidade Microbiana/efeitos dos fármacos
Praguicidas/farmacologia
Doenças das Plantas/microbiologia
Ralstonia solanacearum/fisiologia
Solo/química
Microbiologia do Solo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Bicarbonates); 0 (Calcium Compounds); 0 (Oxides); 0 (Pesticides); 0 (Soil); 420-04-2 (Cyanamide); 45JP4345C9 (ammonium bicarbonate); C7X2M0VVNH (lime)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160108
[St] Status:MEDLINE
[do] DOI:10.1038/srep19037


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[PMID]:26995916
[Au] Autor:Zhang XP; Ning TY; Yang Y; Sun T; Zhang SM; Wang B
[Ti] Título:[Effects of different application rates of calcium cyanamide on soil microbial biomass and enzyme activity in cucumber continuous cropping].
[So] Source:Ying Yong Sheng Tai Xue Bao;26(10):3073-82, 2015 Oct.
[Is] ISSN:1001-9332
[Cp] País de publicação:China
[La] Idioma:chi
[Ab] Resumo:A 2-year field experiment was conducted to study the effects of CaCN2 combined with cucumber straw retention on soil microbial biomass carbon (SMBC) , soil microbial biomass nitrogen (SMBN) and soil enzyme activities under cucumber continuous cropping system. Four treatments were used in this study as follows: CK (null CaCN2), CaCN2-90 (1350 kg CaCN2 . hm-2) CaCN2-60 (900 kg CaCN2 . hm-2), CaCN2-30 (450 kg CaCN2 . hm-2). The results indicated that, compared with the other treatments, CaCN2-90 treatment significantly decreased SMBC in 0-10 cm soil layer at seedling stage, but increased SMBC in 0-20 cm soil layer after early-fruit stage. Compared with CK, CaCN2 increased SMBC in 0-20 cm soil layer at late-fruit stage, and increased SMBN in 0-10 cm soil layer at mid- and late-fruit stages, however there was no significant trend among CaCN2 treatments in the first year (2012), while in the second year (2013) SMBN increased with the increasing CaCN2 amount after mid-fruit stage. CaCN2 increased straw decaying and nutrients releasing, and also increased soil organic matter. Furthermore, the CaCN2-90 could accelerate straw decomposition. Compared with CK, CaCN2 effectively increased soil urease, catalase and polyphenol oxidase activity. The soil urease activity increased while the polyphenol oxidase activity decreased with the increase of CaCN2, and CaCN2-60 could significantly improve catalase activity. Soil organic matter, urease activity and catalase activity had significant positive correlations with SMBC and SMBN. However, polyphenol oxidase activity was negatively correlated to SMBC and SMBN. Our findings indicated that CaCN2 application at 900 kg . hm-2 combined with cucumber straw retention could effectively improve soil environment, alleviating the soil obstacles under the cucumber continuous cropping system.
[Mh] Termos MeSH primário: Agricultura/métodos
Cucumis sativus/crescimento & desenvolvimento
Cianamida/química
Microbiologia do Solo
Solo/química
[Mh] Termos MeSH secundário: Biomassa
Carbono/química
Catalase/metabolismo
Catecol Oxidase/metabolismo
Nitrogênio/química
Urease/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil); 420-04-2 (Cyanamide); 7440-44-0 (Carbon); EC 1.10.3.1 (Catechol Oxidase); EC 1.11.1.6 (Catalase); EC 3.5.1.5 (Urease); N762921K75 (Nitrogen)
[Em] Mês de entrada:1605
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160322
[St] Status:MEDLINE



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