检索结果-南通市图书馆

effect of Lead-Zinc Interaction on size of Microbial Biomass in Red soil

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 1998年第2期8卷 143-148页

作者： K. s. KHAN and HuaNG CHANGYONG College of Natural Resources and environmental sciences, Zhejiang Agricultural University, Hangzhou 310029 (China) Coll. National Research and environment science Zhejiang Agricultural University Hangzhou 310029 China

Ｌｅａｄａｎｄｚｉｎｃａｒｅｔｈｅｍｅｔａｌｓｗｅｌｒｅｃｏｇｎｉｚｅｄｆｏｒｔｈｅｉｒｗｉｄｅｓｐｒｅａｄｄｉｓｔｒｉｂｕｔｉｏｎａｎｄｐｏｔｅｎｔｉａｌｒｉｓｋｔｏｔｈｅｅｎｖｉｒｏｎｍｅｎｔ．Ｏｕｔｏｆｔｈｅｓ... 详细信息

Ｌｅａｄａｎｄｚｉｎｃａｒｅｔｈｅｍｅｔａｌｓｗｅｌｒｅｃｏｇｎｉｚｅｄｆｏｒｔｈｅｉｒｗｉｄｅｓｐｒｅａｄｄｉｓｔｒｉｂｕｔｉｏｎａｎｄｐｏｔｅｎｔｉａｌｒｉｓｋｔｏｔｈｅｅｎｖｉｒｏｎｍｅｎｔ．Ｏｕｔｏｆｔｈｅｓｅｔｗｏ，ｚｉｎｃｉｓａｎｅｓｅｎ...

关键词：微生物数量红壤锌铅相互作用

Nutritional,rheological and sensory properties of butter processed with different mixtures of cow and sheep milk cream

在线全文

学校读者我要写书评

暂无评论

Food Bioscience 2022年第2期46卷 487-497页

作者： Renata s Dias Celso F.Balthazar Rodrigo N.Cavalcanti Louise A.sobral Jessica F.Rodrigues Roberto P.CNeto Maria Inˆes B.Tavares Ana Paula B.Ribeiro Renato Grimaldi Celso sant’Anna erick A.esmerino Tatiana C.Pimentel Marcia Cristina silva Adriano G.Cruz Instituto Federal de educaç˜ao Ciˆencia e Tecnologia do Rio de Janeiro(IFRJ)Departamento de AlimentosRJBrazil Universidade estadual de Campinas(UNICAMP) Faculdade de Engenharia de AlimentosCampinasSPBrazil Universidade Federal do Rio de Janeiro(UFRJ) Escola de QuimicaRJBrazil Instituto Federal of Minas Gerais(IFMG) Departamento de Ciˆencias Agr´ariasBambuíMGBrazil Universidade Federal do Rio de Janeiro(UFRJ) Instituto de Macromol´eculas Professora Eloisa Mano(IMA)Rio de JaneiroBrazil Instituto Federal do Paran´a(IFPR) ParanavaíPRBrazil g Instituto Nacional de MetrologiaNormalizaç˜ao Qualidade Industrial(affnInmetro) Duque de Caxias25250-020Rio de JaneiroBrazil Universidade Federal Fluminense(UFF) Faculdade de Medicina VeterinariaNiter´oiRJBrazil

This study assessed the quality parameters and consumer perception and behavior of butter processed with different ratios of cow and sheep milk *** milk cream butter(CMCB)showed lower moisture content and higher fat content,smaller fat globules,and higher concentrations of long-chain saturated fatty acids and monounsaturated fatty acids,resulting in improved potential health *** addition,CMCB showed yellow color,little salt,and butter taste as the main sensory characteristics,resulting in grateful and good digestibility *** milk cream addition improved the rheological properties of the products(lower viscosity,consistency index,and rigidity(J0),and higher fluidity and viscoelastic behavior(J1)),mainly due to the increased concentrations of short-chain and medium-chain saturated fatty acids and polyunsaturated fatty ***,sheep milk cream butter(sMCB)was characterized by a greasy and striking aroma,with a lower perception of good digestibility and good appearance,and a higher bitter *** association of cow and sheep milk cream could be an exciting option to obtain products with improved fatty acid profiles,health indices,and yet maintain desired rheological and sensory *** formulation with 60%sheep milk cream and 40%cow milk cream would be the suggested combination.

关键词： sheep milk Bovine milk Quality parameters Butter

The Trichoderma-plant interaction is mediated by avirulence proteins produced by this fungus

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

浙江大学学报（农业与生命科学版） 2004年第4期30卷 422-422页

作者： Ruocco M Lanzuise s Woo s L Ambrosino P Marra R Turrà D Gigante s Formisano e scala F Kip N P J G M de Wit Lorito M Dip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica Università di Napoli "Federico II" and CNR-IPP Via Università 100 Portici (NA) 80055 Italy Dip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica Università di Napoli "Federico II" and CNR-IPP Via Università 100 Portici (NA) 80055 Italy Dip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica Università di Napoli "Federico II" and CNR-IPP Via Università 100 Portici (NA) 80055 Italy Dip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica Università di Napoli "Federico II" and CNR-IPP Via Università 100 Portici (NA) 80055 ItalyDip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica Università di Napoli "Federico II" and CNR-IPP Via Università 100 Portici (NA) 80055 Italy Dip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica Università di Napoli "Federico II" and CNR-IPP Via Università 100 Portici (NA) 80055 Italy Dip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica Università di Napoli "Federico II" and CNR-IPP Via Università 100 Portici (NA) 80055 Italy Dip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica Università di Napoli "Federico II" and CNR-IPP Via Università 100 Portici (NA) 80055 Italy Dip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica Università di Napoli "Federico II" and CNR-IPP Via Università 100 Portici (NA) 80055 Italy Dip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica Università di Napoli "Federico II" and CNR-IPP Via Università 100 Portici (NA) 80055 Italy Dip. Arboricoltura Botanica e Patologia Vegetale-Sez. Patologia Vegetale Lab. di Lotta Biologica

The molecular basis of Trichoderma -plant interaction is very complex and still not completely understood. The colonization of the root system by rhizosphere competent strains of Trichoderma results in increased development of root/aerial systems, in improved yields and in plant disease control. Other beneficial effects, such as the induction of plant systemic resistance, have also been described. To understand the mechanisms involved we are using different approaches, including the making of transformants expressing genes that encode for compounds able to affect plant response to pathogens. Trichoderma transformants carrying the avirulence gene Avr4 from Cladosporium fulvum under the control of constitutive and inducible promoters were obtained and tested on tomato plants having the Cf4 resistance gene. Necrosis and suberification zones, similar to the symptoms appearing during Cladosporium-tomato interaction, were found when the roots of the Cf4 plants were treated with Avr4-Trichoderma. This demonstrates that selected Trichoderma strains are able to transfer to the plant molecules that may deeply affect metabolism, disease resistance etc. Therefore, these beneficial fungi can be regarded as biotechnological tools to provide a variety of crops with useful compounds. Moreover, in in vitro competition assays the transformants were found to be more effective as antagonists against Alternaria alternata than the wild type. Trichoderma sends a variety of biochemical signals to the plants including avirulence molecules; therefore the presence of avr-like proteins in the fungus proteome was investigated. Proteome analysis has permitted us to isolate and sequence many proteins potentially having this function. From the extracellular protein extracts, we have purified and sequenced a protein with structural characteristics similar to Avr4 of C. fulvum. The protein, Hytra1, was found to be a hydrophobin with chitin binding activity, the typical 8 cysteine residues, and 4 dis

关键词：无毒力蛋白质真菌木霉属生产植物

The nature of the companion of PsR J1719-1438: a white dwarf or an exotic object?

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2012年第7期12卷 813-816页

作者： J. e. Horvath Instituto de Astronomia Geofísica e Ciências Atmosfricas - Universidade de So Paulo

We raise the possibility that the very dense, compact companion of PsR J1719-1438, which has a Jupiter-like mass, is an exotic quark object rather than a light helium or carbon white dwarf. The exotic hypothesis naturally explains some of the observed features, and provides quite strong predictions for this system, to be confirmed or refuted in feasible future studies.

关键词： binary pulsars -- exotic matter-- pulsars: individual (PsR J1719-1438)

RATIO OF CHARMeD BARYON TO MesON IN e^(+)e^(-) ANNIHILATION

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1990年第3期7卷 109-112页

作者： CHeN e-sheng WU Qian Department of Physics Shandong UniversityJinan 250100

A method to determine the value of the ratio of charmed baryon to meson in e^(+)e^(-) annihilation is *** the data of CLeO,HRs and MARK Ⅱ groups,we obtain f≡B_(c)/M_(c)=0.21±0.05,0.24±0.08 and 0.33±0.05,for √s=5... 详细信息

关键词： annihilation meson charm

The Application of e-learning and Distance Learning Technologies to Crew education and Training in the Russian Federation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

航海教育研究 2016年第4期33卷 41-46页

作者： A.Gorobtsov N.Kovalnogova s.Kurguzov V.Marich s.sokolov Admiral Makarov state University of Maritime and Inland shipping St.PetersburgRussian Federation

The article examines the world experience of e-learning as well as distance education technologies within the education process organization on higher and post-higher education *** have been listed the results of the most popular e-learning platforms ***,there have been looked through the core legislative background of the development of the mentioned technologies in Russia and worldwide among the universities,specialized in seafarers *** have been also drawn up the points of the Admiral Makarov state University of Maritime and Inland shipping(Admiral Makarov sUMIs)design of the distance education system LMs"FARWATeR"in compliance with the International Convention on standards of Training,Certification and Watchkeeping for seafarers(sTCW Convention).The practical application of distance education system to the advanced professional training has been discussed in the article.

关键词： e-leaming,distancelearningtechnologies,MeTInstitutions,advancededucationplatforms,distanceeducation system, seafarers training, International Convention on standards of Training, Certification and Watchkeeping for seafarers

Investigation of Oxidation-Reduction Properties of Growing Mediums for Cell Culture of Mammals under the effect of Cosmo-Geophysical Factors

在线全文

学校读者我要写书评

暂无评论

Journal of Biomedical science and engineering 2019年第2期12卷 85-91页

作者： s. s. Moisa V. V. Tsetlin A. N. Velikanov Federal state-Financed establishment of science State Scientific Center of Russian Federation Institute of Biomedical Problems of the Russian Academy of Sciences Moscow Russia Moscow state University Moscow Russia

In model experiments were studied the effect of cosmo-geophysical factors of environment (hypomagnetic conditions during 2 days ≈ 1 mkT;electromagnetic irradiation (10 min - 2 MHz with amplitude 5 V/m and power 30 mkVt, background 2 - 4 mkVt), γ-quantum (10 min—from the source 137Cs) and its combined effect on the physic-chemical properties (ORP and pH) of growing medium for cell culture of mammals as nutrition medium 199 (Paneco, Russia). It was used a clear solution of medium (solution 1) and with the adding of 10% embryo bull serum—model of bio-medium (solution 2). Hypomagnetic conditions evoked the decreasing of ORP and pH value in both solutions, electromagnetic irradiation in the solution 1 which evoked the decreasing of ORP and the increasing of pH value, and in the solution 2, on the contrary, the increasing of ORP with the unchanging pH value. γ-radiation sharply decreased ORP value and didn’t change pH in solution 1, i.e. the reduction properties increased. There is insignificant increasing of ORP value and the decreasing of pH is noted in the solution 2, that it is characterized with the increasing of oxidative properties of solution. Under the combined effect of hypomagnetic conditions and electromagnetic irradiation, the values of investigating parameters in the solution 1 decreased and in the solution 2 increased. It was observed acute decreasing of ORP value in both solutions under the combined effect of hypomagnetic conditions and γ-radiation, i.e. the reductive properties of the solutions increased sharply. In this the concentration H+ significantly decreased, (p γ-radiation led to the decreasing of ORP and pH values in both solutions. Thus, the studying factors significantly change the oxidation-reduction properties of growing mediums. The investigation of the processes in biological mediums plays the important role in the assessment of environment effect during the flight in inter-planet space.

关键词： Cosmo-Geophysical Factors Growing Mediums for Cell Culture of Mammals Oxidation-Reduction Properties

Altitudinal analysis of carbon stocks in the Antisana páramo,ecuadorian Andes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Plant ecology 2016年第5期9卷 553-563页

作者： Verónica Minaya Gerald Corzo Hugo Romero-saltos Johannes van der Kwast egbert Lantinga Remigio Galárraga-sánchez Arthur Mynett UNesCO-IHe Institute for Water education Westvest 72611 AX DelftThe Netherlands Technological University of Delft-TU-Delft Stevinweg 12628 CN DelftThe Netherlands escuela Politécnica Nacional EPNWater Science UnitLadrón de Guevara E11-253Quito 170517Ecuador Yachay Tech Ciudad del Conocimiento YachayHacienda San JoséS/NSan Miguel de Urcuquí100119Ecuador Farming systems ecology Wageningen UniversityPO Box 5636700 AN WageningenThe Netherlands

Aims The importance of quantifying carbon stocks in terrestrial ecosystems is crucial for determining climate change ***,the present regional assessments of carbon stocks in tropical grasslands are extrapolated to unsampled areas with a high degree of uncertainty and without considering the carbon and nitrogen composition of vegetation and soil along altitudinal *** study aims to assess carbon and nitrogen concentrations in soil and vegetation,aboveground carbon stocks distribution and soil organic carbon stocks along an altitudinal range in the páramo region in the ecuadorian *** The vegetation inventory was conducted using 15×15 m sampling plots distributed in three altitudinal *** on the patterns exhibited by the dominant vegetation growth forms,biomass and soil were sampled to quantify the corresponding carbon and nitrogen ***,the aboveground live biomass along the páramo altitudinal range was estimated using allometric ***,soil and vegetation carbon stocks were estimated for the entire *** Findings Altitudinal analysis supported a potential distribution of carbon and nitrogen concentrations in soil,litter and live tissues,where higher concentrations were found in the low altitudinal range mainly for tussocks and acaulescent *** in litter showed higher concentrations at low altitudinal ranges for acaulescent rosettes and cushions *** the same growth forms,lignin patterns in litter were higher in high altitudinal *** texture provided complementary information:high percentage of silt was highly correlated to high soil nitrogen and carbon *** were found to be responsive to altitude with their,highest aboveground carbon stocks occurring at the low altitudinal range,but cushions and acaulescent rosettes responded *** established relationships among soil,vegetation and altitude shown in this study must be taken into accou

关键词： Andes carbon growth forms nitrogen páramo grassland

OPTICAL PROPeRTIes OF GeO_2 AND Ge NANOCRYsTALs

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica sinica(english Letters) 1999年第5期12卷 1164-1165页

作者： Y.H.Zhou 1) ,Y.Y.Feng 2) and H.Y.Lu 2) 1)Department of Physics Nanjing Normal University, Nanjing 210097,China 2)Physics and Ch寁O P T I C A L P R O P e R T I e s O F Ge O2 A N D Ge N A N O C R Y s T A L s Y. H. Zhou1) , Y. Y. Feng2)

he co m pound m aterial of n m size particles Ge O2 si O2 w as synthesied through hydrolysis of si( O C2 H4) and Ge Cl4 . A heat treatm ent w as carried out for the sa m ples at 100 ～1200 ℃in air . Its optical property w as deter mined by U V Vis spectur m . We have found that theabsorption edge of spectru m shifted progressively to longer w avelengths . The quantu m size ef fect of nanocrystals appears because crystals gro w and energy of optical band gap reduces d ueto the influence of te m perature . By the analysis of X ray diffraction w e have observed theprocess in w hich the structure of particles changed fro m disorder into order .

关键词： nano m aterial quantu m size effects