Observations on the endo- and ectoparasites affecting dogs and cats in Aboriginal communities in the north-west of Western Australia   总被引：1，自引：1，他引：0  

RCA THOMPSON  BP MELONI  RM HOPKINS  P DEPLAZES  JA REYNOLDSON 《Australian veterinary journal》1993,70(7):268-270

  相似文献   

Antebrachiometacarpal arthrodesis in five dogs     

ST Lewis  DD Lewis  AR Cross  RM Radasch  C Boekhout‐Ta 《Australian veterinary journal》2019,97(4):122-127

  相似文献   

Metomidate anesthesia in dogs with different premedications     

R Fritsch  W Erhardt  D Franczuszki  G Neumann  U Pfeiffer  M E Ehrenb?ck  B Kuhnt  G Blümel 《Berliner und Münchener tier?rztliche Wochenschrift》1980,93(9):171-174

  相似文献   

Exploration du fonctionnement surrénalien chez le chien en état de choc septique : étude clinique prospective ; résultats préliminaires     

T. Fritsch  J. Bonnet  C. Pouzot-Névoret  A. Barthélémy  M. Pugeat  H. Déchaud  I. Goy-Thollot 《Pratique Médicale et Chirurgicale de l'Animal de Compagnie》2012,47(2):62-63

  相似文献   

Solid substrate for production of Alternaria alternata conidia: a potential mycoherbicide for the control of Eichhornia crassipes (water hyacinth)     

RM Babu  A Sajeena  & K Seetharaman 《Weed Research》2004,44(4):298-304

Eichhornia crassipes (water hyacinth), a major aquatic weed in India, is one of the targets in a biological weed control research programme in India. A fungal pathogen, Alternaria alternata, is being evaluated as a biological control agent for this weed. The feasibility of solid substrate for the mass production of A. alternata has been examined. Conidia production and virulence of A. alternata were affected by temperature, light and incubation period. The highest number of conidia were produced on rice seed followed by wheat, sorghum, maize seeds and cornmeal at 20°C when exposed to near‐ultraviolet than on the other substrates, while the least conidia were observed on these substrates under light conditions. At 20°C, large numbers of virulent conidia were produced on rice seeds after 4 weeks of incubation under constant dark conditions. Henceforth, the use of rice seeds as a solid substrate for production of A. alternata could be a feasible method to produce conidia in a village co‐operative scenario in India.  相似文献   

Chirality in synthetic agrochemicals: bioactivity and safety considerations     

N Kurihara  J Miyamoto  GD Paulson  B Zeeh  MW Skidmore  RM Hollingworth  HA Kuiper 《Pest management science》1999,55(2):219-219

  相似文献   

Effect of Insemination–Ovulation Interval and Addition of Seminal Plasma on Sow Fertility to Insemination of Cryopreserved Sperm     

M Abad  JC Garcia  DJ Sprecher  G Cassar  RM Friendship  MM Buhr  RN Kirkwood 《Reproduction in domestic animals》2007,42(4):418-422

In swine, the use of frozen-thawed (FT) sperm for artificial insemination (AI) is limited because of poor sow fertility, possibly associated with a post-thaw capacitation-like status resulting in fewer fully viable sperm. Sow fertility to AI with FT sperm may improve with deeper deposition of sperm within the female tract, insemination very close to ovulation, or reversal of cryocapacitation by seminal plasma (SP). We performed two experiments to examine these suggestions. In experiment 1, 122 multiparous Yorkshire sows received 600 IU equine chorionic gonadotrophin at weaning and 5 mg pLH 80 h later to control time of ovulation. The predicted time of ovulation (PTO) was 38 h after pLH injection. Thereafter, sows were assigned on the basis of parity to a single AI of FT sperm at 2 h before PTO, or at 12 h before PTO, or FT sperm supplemented with 10% SP at 12 h before PTO. Control sows received fresh semen at 12 h before PTO. All semen doses were adjusted to 3 x 10(9) live cells and deposited into the cervix. Experiment 2 employed 99 multiparous crossbred sows and repeated the treatments of experiment 1 except that all FT inseminations were intrauterine. In both experiments, farrowing rates were lower (p < 0.01) following FT inseminations with no effect of time of insemination or of supplemental SP. In experiment 1, litter size was smaller following FT insemination (p < 0.05), but no effect on litter size was evident in experiment 2. Supplemental SP had no effect on litter size in either experiment. The lack of effect of either SP or timing of FT insemination on sow fertility suggests that the non-lethal sperm cryoinjury affecting fertility involves more than just cryocapacitation.  相似文献   

Exposure assessment for terrestrial non-target arthropods     

J. F. Gonzalez-Valero  P. J. Campbell  H. J. Fritsch  R. Grau  K. Romijn 《Anzeiger für Sch?dlingskunde》2000,15(3):163-168

Concerns regarding the potential of pesticides to harm terrestrial non-target arthropod populations have led to the increased use of ecotoxicological test systems for terrestrial Non-target Arthropod risk assessment. Whilst some useful guidance on terrestrial invertebrate test systems is available, there are significant gaps in guidance for terrestrial non-target arthropod exposure estimates. The typical exposure in the standard test systems is by application of the test substance at the field rate (i. e. gram substance per hectare field) on to a two dimensional surface. However, under field conditions such a spray deposit will be diluted over the total available 3-Dimensional plant and soil surface. The recommendation is to use published leaf area index and crop interception values to standardize terrestrial dilution factors, which can then be used to predict exposure on a 3-Dimensional plant surface. Based on average crop/time specific LAI data for 26 crops, a surrogate off-crop dilution factor of 12 was calculated which can be used to convert 2-Dimensional spray drift exposure to 3-Dimensional off-crop plant surface exposure. Another significant terrestrial exposure guidance gap is how to calculate predicted environmental concentrations (PECs) for multiple application products. Based on spray interval and half-life data from 32 representative multiple application plant protection products, the typical worst-case PECs for accumulation of residues were calculated after up to 8 applications. These data showed that Multiple Application Factors (MAFs = accumulated PEC/initial PEC), increased from 1 to 3.5 after 1 to 8 applications, respectively. Finally, overall 90^th percentile spray deposit values have been proposed for deriving off-crop multiple applications PECs (1 to 8 applications) based on published spray drift data. The recommended equations for terrestrial exposure assessment include the use of:-application rate, the 90^th percentile drift value, the multiple application factors (MAF) and the standard dilution factor (for 3-Dimensional plant surface). This proposed terrestrial non-target arthropod exposure scheme is comparable with other first tier exposure assessment schemes eg aquatic exposure assessment.  相似文献   

Polymorphs of Alumina Predicted by First Principles: Putting Pressure on the Ruby Pressure Scale     

KT Thomson  RM Wentzcovitch  MST Bukowinski 《Science (New York, N.Y.)》1996,274(5294):1880-1882

Fully optimized quantum mechanical calculations indicate that Al2O3 transforms from the corundum structure to the as yet unobserved Rh2O3 (II) structure at about 78 gigapascals, and it further transforms to Pbnm-perovskite structure at 223 gigapascals. The predicted x-ray spectrum of the Rh2O3 (II) structure is similar to that of the corundum structure, suggesting that the Rh2O3 (II) structure could go undetected in high-pressure x-ray measurements. It is therefore possible that the ruby (Cr3+-doped corundum) fluorescence pressure scale is sensitive to the thermal history of the ruby chips in a given experiment.  相似文献   

An Economics Approach to Hard Computational Problems     

BA Huberman  RM Lukose  T Hogg 《Science (New York, N.Y.)》1997,275(5296):51-54

A general method for combining existing algorithms into new programs that are unequivocally preferable to any of the component algorithms is presented. This method, based on notions of risk in economics, offers a computational portfolio design procedure that can be used for a wide range of problems. Tested by solving a canonical NP-complete problem, the method can be used for problems ranging from the combinatorics of DNA sequencing to the completion of tasks in environments with resource contention, such as the World Wide Web.  相似文献