Method to assess the effects of soil acidity factors on legume-Rhizobium symbioses     

M. Wood  J.E. Cooper  A.J. Holding 《Soil biology & biochemistry》1983,15(1):123-124

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Removal of Benzene by the Indoor Plant/Substrate Microcosm and Implications for Air Quality     

Orwell  Ralph L.  Wood  Ronald L.  Tarran  Jane  Torpy  Fraser  Burchett  Margaret D. 《Water, air, and soil pollution》2004,157(1-4):193-207

Water, Air, &; Soil Pollution - The quality of the indoor environment has become a major health consideration, since urban-dwellers spend 80-90% of their time indoors, where air pollution can be...  相似文献   

Measurement of the microbial biomass in composted wheat straw,and the possible contribution of the biomass to the nutrition of Agaricus bisporus     

G.P. Sparling  T.R. Fermor  D.A. Wood 《Soil biology & biochemistry》1982,14(6):609-611

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At-sea distribution of waved albatrosses and the Galápagos Marine Reserve     

David J. Anderson  Kathryn P. Huyvaert  Dana R. Wood  Cynthia L. Gillikin  Barrie J. Frost  Henrik Mouritsen   《Biological conservation》2003,110(3):165-373

Albatross populations worldwide are threatened by incidental takes in longline fishery operations. The recent establishment of the Galápagos Marine Reserve (GMR) is relevant to the longline bycatch issue, as it prohibits industrial longlining in the vicinity of the major nesting site of waved albatrosses (Phoebastria irrorata). However, the legality of the fishing protections is being challenged, highlighting a need for data on use of the GMR by albatrosses. We used satellite tracking over a total of four breeding seasons to determine the distribution of waved albatrosses inside and outside the GMR, and thereby assess the degree of protection that GMR provisions offer to this species. During the incubation period, breeding adults made commuting trips from the nesting island (Isla Española) to the Peruvian upwelling zone, traveling north, east, and south after leaving the nest. During the brooding period, the distribution contracted markedly, and most satellite fixes were within the GMR. During the rearing period, breeders performed both long trips outside the GMR and short trips within. The southeastern portion of the GMR is used throughout the incubation, brooding, and early rearing periods by breeding waved albatrosses. Indirect information from non-breeding adults indicates that they are likely to use the waters of the GMR extensively.  相似文献   

Influence of temperature on the motility of Pseudomonas oryzihabitans and control of Globodera rostochiensis     

F.I. AndreoglouI.K. Vagelas  M. Wood  H.Y. SamalievS.R. Gowen 《Soil biology & biochemistry》2003,35(8):1095-1101

The motility and efficacy of Pseudomonas oryzihabitans as a biocontrol agent against the potato cyst nematode Globodera rostochiensis were studied with respect to temperature. The influence of soil moisture on bacterial movement was also tested. In a closed container trial, P. oryzihabitans significantly reduced invasion of second stage juveniles (J2) of G. rostochiensis in potato roots, its effect being more marked at 25 and 21 °C than at 17 °C. P. oryzihabitans motility in vitro was optimal at 26 °C and inhibited at temperatures below 18 °C. In soil, both temperature and matric potential affected bacterial movement. At 16 °C its movement and survival were suppressed, but they were unaffected at 25 °C. At both temperatures the biocontrol agent moved faster in the wetter (−0.03 MPa) than in the drier soil (−0.1 MPa). These results suggest that temperature is a key factor in determining the potential of P. oryzihabitans as a biocontrol agent.  相似文献   

Study on Chemical Components of Alkaline Nitrobenzene Oxidation from Plantation Woods     

Yoich TOMIMURA 《中国林业科技(英文版)》2002,(2)

This paper deals with the chemical components and the chemical structure of lignin of Chinese fir and Poplar I-214 from plantationforest. The results revealed that the contents ofchemical component in heart wood and sapwood were almost the same except ethanol-benzene extract both in Chinese fir and in Poplar I-214, The contents of ash, holocellulose, α -cellulose, pentosan, ethanol-benzene extract and cold-water extract in Poplar I-214 were higher than that in Chinesefir, The content of lignin in Poplar I-214 was lower than that in Chinese flr. Vanillin, vanillic acid and p-hydroxybenzaldehyde were found in Chinesefir while vanillin and vanillic acid, p-hydroxybenzoic acid, syringaldehyde and syringic acid werefound in Poplar I-214 in investigation of the chemical structure of lignin by using nitrobenzene oxidization method.  相似文献   

A genetic, pathological and virological study of congenital hypotrichosis and incisor anodontia in cattle   总被引：2，自引：0，他引：2  

W V Wijeratne  D O'Toole  L Wood  J W Harkness 《The Veterinary record》1988,122(7):149-152

Two Friesian cows, half-sibs by a common dam, produced four bull calves with severe congenital hypotrichosis and incisor anodontia and three normal heifers by six unrelated Holstein, Friesian, Devon and Hereford bulls. The two dams, and their dam, had coats of a short, stubbly nature and the pigmented areas appeared rusty grey rather than black. Pathological examination of skin samples taken from multiple standardised sites from two of the affected calves showed a reduction in the number of large first-formed hair follicles. Smaller calibre hair follicles were present but, unlike those of normal neonatal calves, all were in the telogen (inactive) phase. Although the herd was infected with bovine virus diarrhoea virus there was no convincing evidence that the virus was implicated in the pathogenesis of these cases of congenital hypotrichosis with incisor anodontia. The family breeding information on the few severely affected and normal progeny and mildly affected and normal parents may be explained by the genetic hypothesis of an X-linked incompletely dominant gene.  相似文献   

An analysis of cellular proliferation, and synthesis of lymphokines and specific antibody in vitro by leucocytes from immunized cattle   总被引：1，自引：0，他引：1  

D L Emery  J H Dufty  P R Wood 《Veterinary immunology and immunopathology》1988,18(1):67-80

The relationships between the production of lymphokines, cellular proliferation and antibody synthesis by immune bovine PBL in vitro was examined to identify the cellular reactions responsible for differences in the titres of serum antibodies in calves from selected sire lines and MHC Class I phenotypes. Leucocytes from 22 calves immunized with ovalbumin and DNP-BSA proliferated specifically in vitro in the presence of 1-10 micrograms/ml ovalbumin 7-28 days after the second vaccination. Significant correlations between the production of IL-2, IFN-gamma and maximum proliferation were observed for the total group. The quantity of specific antibody produced when PBL were incubated alone or with 10(-1)-10(-2) micrograms/ml ovalbumin was also correlated significantly with the maximum proliferation and the serum antibody titre between 7 and 14 days. Anti-ovalbumin IgG was also synthesized in MLRs where the quantity of antibody was significantly correlated with the magnitude of proliferation. The responses in vitro to DNP-BSA were too low to provide meaningful comparisons. The results indicate that at intervals during the period of increasing serum titres, events in the bovine antibody response in vivo can be replicated in vitro. In addition, assays for proliferation, IL-2 or gamma-IFN, or specific antibody can be used to assess the magnitude of the immune response in vivo in experimental groups of cattle. Significant sire line differences in the serological responses to ovalbumin were observed but DNP-BSA was a poorer antigen and differences in the responses to this antigen were not significant. However, the sire line differences in vivo were not reflected in vitro in proliferative and lymphokine assays; only the production of antibody in vitro was significantly correlated with the in vivo serum titre.  相似文献   

Use of inactivated oil emulsion infectious bursal disease vaccines in breeder chickens to prevent immunosuppression in progeny chicks     

G W Wood  J C Muskett  D H Thornton 《Research in veterinary science》1983,35(1):114-115

Two chicken flocks, vaccinated with different inactivated infectious bursal disease vaccines, and one unvaccinated flock provided chicks with high and low levels of and no maternally derived immunity. Following challenge at three ages with a subclinical strain of infectious bursal disease virus the chicks were assessed for bursal damage and suppression of the immune response to Newcastle disease virus. Both high and low levels of maternally derived antibody prevented immunosuppression but the lower level provided only partial protection against bursal damage.  相似文献   

Clostridium perfringens type E enterotoxaemia in rabbits   总被引：2，自引：0，他引：2  

M Baskerville  M Wood  J H Seamer 《The Veterinary record》1980,107(1):18-19

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