A rapid method for predicting the lime requirement of acidic temperate soils with widely varying organic matter contents. I. Development of the lime requirement model     

J. S. BAILEY  R. J. STEVENS  D. J. KILPATRICK 《European Journal of Soil Science》1989,40(4):807-820

A model to describe the shapes of soil pH-CaCO₃ neutralization curves is presented. The model can be used to predict lime requirement in soils with widely varying organic matter contents. Parameters of the model are predicted from the easily measured soil properties of sample density and initial pH. The results suggest that soil titratable acidity is primarily related to soil organic matter content, and that soil organic matter content may be predicted from measurements of soil sample density. The proposed method for predicting lime requirement should be superior to other established quick-test methods for routine soil testing both in terms of speed and versatility.  相似文献   

Mortality of larval walleye pollock Theragra chalcogramma in the western Gulf of Alaska, 1988–91     

KEVIN M. BAILEY  SUSAN J. PICQUELLE  STELLA M. SPRING 《Fisheries Oceanography》1996,5(S1):124-136

Mortality rates of larval walleye pollock Theragra chakogramma were estimated from larval survey data from 1988 to 1991. Mortality estimates were based on cohort-specific losses between occupations of survey grids. Interannually, estimates of early feeding stage larval mortality rates ranged over an order of magnitude, from 0.045–0.43 day^-1, and declined sharply with age. There is some evidence that mortality rates of early feeding larvae tend to be negatively correlated with temperature and postively correlated with wind mixing.  相似文献   

Suspected fatal venous air embolism during anaesthesia in a Pomeranian dog with pulmonary calcification     

VP Walsh  RG Machon  JS Munday  CJ Broome 《New Zealand veterinary journal》2013,61(5):359-362

CASE HISTORY: Death occurred in a 1.25 kg, 9-month-old female Pomeranian dog undergoing anaesthesia for surgical repair of partially healed fractures of the radius and ulna.

CLINICAL FINDINGS: Following sedation, anaesthesia was induced using thiopentone and maintained with halothane in oxygen. An acute decrease in the dog's end-tidal carbon dioxide (EtCO₂) measurements was noted approximately 50 min after induction, immediately following delivery of a 5-ml bolus of lactated Ringer's solution (LRS) administered to flush a small (0.06 ml) volume of fentanyl via a pre-placed intravenous (I/V) catheter. Venous air embolism (VAE) was suspected and the dog died despite interventive therapy. On post-mortem examination, several air bubbles were noted when the right ventricle was opened under water. Histologically, the kidneys appeared abnormal with immature glomeruli, and the lungs appeared diffusely mineralised. The origin of the air was probably small bubbles and microbubbles that may have been present in the extension set and 20 ml syringe used for the administration of fentanyl and I/V fluids to the dog.

DIAGNOSIS: Renal dysplasia and diffuse pulmonary calcification, with VAE as the probable cause of death.

CLINICAL RELEVANCE: In this case of VAE-associated anaesthetic death, it is further speculated that underlying pulmonary disease, in the form of pulmonary calcification, may have contributed to an increased sensitivity to the adverse effects of VAE.  相似文献   

Intra‐abdominal blockage of a ventriculoperitoneal shunt by a suspected mesenteric pseudocyst in a dog     

CJ Driver  MJ Pinilla  S Loderstedt  PJ Kenny 《Australian veterinary journal》2013,91(10):418-421

  相似文献   

Temporohyoid osteoarthropathy in two young horses     

PK Readford  GD Lester  CJ Secombe 《Australian veterinary journal》2013,91(5):209-212

Two cases of temporohyoid osteoarthropathy (THO) in young Australian horses are described. The pathogenesis of THO is yet to be fully elucidated, but current theories include extension of infection from otitis media or interna to the temporohyoid joint or a primary but non‐infectious degenerative condition within the temporohyoid joint. The young age of the horses and the unilateral distribution suggested an infectious aetiology. Both horses partially responded to treatment with broad‐spectrum antimicrobial and anti‐inflammatory drugs with concurrent management of ulcerative keratitis. The management of violent head shaking in one horse included the administration of gabapentin, an anticonvulsant known to have antihyperalgesic effects and reduce neuropathic pain.  相似文献   

Obstructive shock caused by right atrial thrombosis secondary to malignant pheochromocytoma in a dog     

C Robveille  L Smart  CJ Boyd 《Australian veterinary journal》2020,98(9):462-466

  相似文献   

Use of proxy measurements of insulin sensitivity and insulin secretory response to distinguish between normal and previously laminitic ponies     

K. E. BORER  S. R. BAILEY  N. J. MENZIES‐GOW  P. A. HARRIS  J. ELLIOTT 《Equine veterinary journal》2012,44(4):444-448

Reasons for performing study: Insulin resistance may be a risk factor for pasture‐associated laminitis. Diagnosis of insulin resistance could help identify individuals at increased risk of laminitis. Objective: To calculate proxy measurements of insulin sensitivity (reciprocal of the square root of insulin: RISQI and quantitative insulin sensitivity check index: QUICKI) and insulin secretory response (modified insulin‐to‐glucose ratio: MIRG) based on basal glucose and insulin concentrations in normal (NP) and previously laminitic (PLP) ponies. Methods: Proxies were calculated in 7 NP and 5 PLP from 20 separate measurements of insulin and glucose taken in spring, summer and winter when ponies were adapted to eating either pasture or hay. Proxies were RISQI: Insulin^‐0.5, QUICKI: 1/(log[fasting Insulin]+ log[fasting Glucose]) and MIRG: (800?0.3×[Insulin‐50]²)/[Glucose‐30]. A modified insulin‐to‐glucose ratio for ponies (MIGRP) was investigated using: (3000?0.012 ×[Insulin‐500]²)/[Glucose‐30]. Statistical analysis used linear mixed models. Results: Diet did not significantly affect measurements, so values were pooled for further analysis. RISQI (mean ± s.d.) was lower in PLP (0.26 ± 0.15 [mu/l]^‐0.5) than NP (0.29 ± 0.12 [mu/l]^‐0.5; P = 0.05). QUICKI was lower in PLP (0.31 ± 0.05) than NP (0.33 ± 0.04; P = 0.047). There was no difference in MIRG between NP and PLP. MIGRP (median [interquartile range]) was greater in PLP (4.0 [7.9][mu_ins]²/10·l·mg_gluc) than NP (2.6 [3.2][mu_ins]²/10·l·mg_gluc; P = 0.022). In spring, NP had higher RISQI and QUICKI and lower MIGRP than PLP (P<0.001). In PLP, RISQI and QUICKI were higher in summer than spring (P<0.02) and MIGRP was lower in summer than other seasons (P<0.01). In NP, RISQI, QUICKI and MIGRP were each different between seasons (P<0.017). MIRG did not vary with season. Conclusions: RISQI, QUICKI and MIGRP, but not MIRG, differentiated between NP and PLP. None of the proxies accurately identified individual PLP. Seasonal changes in insulin sensitivity and insulin secretory response were apparent. Potential relevance: Current proxy measurements cannot determine an individual's laminitis susceptibility. MIGRP may be useful in hyperinsulinaemic animals.  相似文献   

Growing common plantation tree species in Kenya for sale of carbon and wood supply: what is the best bet?     

Vincent Oeba  Larwanou Mahamane  Samuel CJ Otor  James B Kung’u  Muchiri N Mbae 《Southern Forests》2017,79(2):117-124

The introduction of carbon finance as an incentive in forestry farming has a potential of increasing the amount of carbon sequestered. However, this has created a daunting task among investors in forestry to optimise the joint production of wood and carbon sequestration. For instance, investors might find it profitable to give up some timber returns in exchange for carbon credits. This study evaluated expected income from growing Cupressus lusitanica Mill., Pinus patula Schiede ex Schltdl. & Cham., Eucalyptus saligna Sm. and Juniperus procera Hochst. ex Endl. for wood and/or the carbon market in central Kenya. The global average unit price of carbon and stumpage royalty were used to estimate expected returns from sale of carbon credits and wood, respectively. There were significant differences (p < 0.01) in the expected amount of income from sale of carbon and wood among the four species. Specifically, at economic rotation of 30 years with stand density of 532 trees ha^?1 P. patula and C. lusitanica yielded US$28 050 and US$23 650, respectively, from sale of carbon compared with US$59 000 and US$51 000, respectively, from sale of wood. This was twice the value investors receive from clear-felling as compared with sales from carbon. Similarly, at economic rotation of 33 years with stand density of 150 trees ha^?1, a forest investor in E. saligna would earn US$15 400 from sale of carbon compared with US$33 000 from sale of wood. Overall, the amount expected to be realised from sale of carbon was lower compared with that from sale of wood. This demonstrates that the price dynamics of carbon offsets in the voluntary and the compliance markets need to remain competitive and attractive for the forest owners to give up some timber returns in exchange for carbon income or to modify forest management regulation in order to increase carbon sequestration.  相似文献   

Method for in vitro screening of aquatic fungicides     

T. A. BAILEY 《Journal of fish diseases》1983,6(2):91-100

Abstract. Methods were developed for in vitro screening of candidate aquatic fungicides for efficacy against Achlya flagellata, A. racemosa, Saprolegnia hypogyna and S. megasperma . Agar plugs containing fungal hyphae, removed from the edge of actively growing colonies, were placed in the depressions of spot plates containing 1.0, 10.0 and 100 mg/l of the candidate compounds for 15 or 60 min. After exposure, the plugs were transferred on to filter papers (0.45-μm pore) in a holder, rinsed, and then placed on cornmeal agar medium in tri-petri dishes. The plates were checked for mycelial growth after 48, 96 and 168 h of incubation in a lighted (400–800 μm) environmental control chamber at 20±2°C. Criteria for the acceptance or rejection of candidate aquatic fungicides for further study were based on the antifungal spectrum index (ASI) comparisons between respective compounds and malachite green after 48 h and the concentration level producing complete growth inhibition. Candidate compounds whose ASI was Jess than 50% that of malachite green after 48 h or did not inhibit growth at levels less than 100 mg/l were rejected. This method provides a base from, which in vivo and definitive test regimens can be developed. Preliminary in vitro screening of candidate fungicides reduces the need for costly in vivo tests on compounds that have low antifungal activity.  相似文献   

Evaluation of dressings to aid healing of mulesing wounds on sheep     

GW. LEVOT  PB. HUGHES  CJ. KALDOR 《Australian veterinary journal》1989,66(11):358-361

Five proprietary and one experimental dressing were compared with no treatment in their ability to aid healing of mulesing wounds in over 1900 young lambs. Healing was judged as the completeness of shrinkage of the mulesing cuts and the condition of scabs on the new skin surface. When assessed at 21 d it was found that treatment with Heriots Crown Wound Powder or Coopers Mulesing Powder offered a significant advantage over leaving the wounds untreated. Neither aqueous organophosphate washes, Defiance nor Defiance containing 0.08% chlorfenvinphos offered any healing advantage over controls. However, washing the wounds with an aqueous organophosphate solution aided healing more than the Defiance-based dressings. It was considered that the powders or the washes encouraged quick scab formation either by creating a dry covering (powders) or by washing away blood and allowing fast drying of the wound. The Defiance-type dressings slowed healing by keeping the wound moist for up to 10 d, but healing was not significantly different to the untreated group by 21 d.  相似文献