Mantle discontinuity structure beneath the southern east pacific rise from P-to-S converted phases   总被引：4，自引：0，他引：4  

Y Shen  AF Sheehan  KG Dueker  de Groot-Hedlin C  H Gilbert 《Science (New York, N.Y.)》1998,280(5367):1232-1235

Receiver functions derived from teleseismic body waves recorded by ocean-bottom seismometers on the southern East Pacific Rise reveal shear waves converted from compressional waves at the mantle discontinuities near 410- and 660-kilometer depth. The thickness of the mantle transition zone between the two discontinuities is normal relative to the global average and indicates that upwelling beneath the southern East Pacific Rise is not associated with an excess temperature in the mantle transition zone.  相似文献   

Plant growth‐promoting rhizobacteria: a novel management strategy for Meloidogyne incognita on turfgrass     

Will Groover  David Held  Kathy Lawrence  Kendra Carson 《Pest management science》2020,76(9):3127-3138

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Verocytotoxigenic Escherichia coli O157 in camelids     

Featherstone CA  Foster AP  Chappell SA  Carson T  Pritchard GC 《The Veterinary record》2011,168(7):194-195

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Weed Control in Rainfed Cotton in Northern Ghana     

A. G. Carson 《国际虫害防治杂志》2013,59(4):420-424

Abstract

In field experiments conducted at the Nyankpala Agricultural Station, Ghana, during 1976–77, soil moisture conditions appeared to be the deciding factor in determining the frequency of handweeding needed to obtain maximum seed cotton yields. In 1976, when planting was early and the late, heavy rains in October prolonged weed growth, two handweedings at 4 and 8 weeks after seeding (w.a.s.) gave comparable yields to continuous weeding and significantly better yields than an alachlor + fluometuron herbicide mixture. Supplementary weeding did not enhance the mixture's performance.

In 1977, planting was relatively late and in the peak of the rainy season and so late weed growth was reduced. A single handweeding at 4 w.a.s. gave as good a yield as repeated handweeding treatments under these conditions. The alachlor + fluometuron mixture also gave adequate weed control and again supplementary weeding did not improve it significantly.

In herbicide evaluation experiments, the safety and performance of pendimethalin and dinitramine herbicides were much influenced by the rainfall pattern immediately following application. With a relatively drier period following application in 1976, the higher rate of these herbicides depressed yields. This rate produced optimum yields in 1977, however, when a very wet period followed application.

Prodiamine and the alachlor + fluometuron mixture were the herbicides least affected by soil moisture and they consistently produced good yields.  相似文献   

Black-hair follicular dysplasia in a New Zealand Huntaway dog     

JS Munday  AF French  GRK McKerchar 《New Zealand veterinary journal》2013,61(3):170-172

CASE HISTORY: A 6-year-old intact male New Zealand Huntaway dog had slowly progressive alopecia that was first observed at 12 weeks of age.

CLINICAL FINDINGS: Patchy alopecia was confined to the black-haired areas of the body, and was most evident on the head and dorsum of the body; tan-haired areas of skin appeared normal. Histological examination of black-haired skin revealed distended melanocytes and large aggregates of melanin within, and surrounding, the hair follicles and the epidermis. Macrophages distended with melanin were also visible within the perifollicular and superficial dermis, and follicular lumina were often plugged by keratin that contained aggregates of melanin. The follicles were dysplastic and few hair shafts were visible emerging from follicular infundibula within the sections.

DIAGNOSIS: The clinical and histological findings were consistent with black-hair follicular dysplasia (BHFD).

CLINICAL RELEVANCE: This is the first report of BHFD in a dog in New Zealand, and is the first report in a Huntaway. The most significant effect of BHFD is a predisposition to follicular plugging and secondary bacterial skin infections. Due to the hereditary nature of the follicular dysplasias, breeding from affected dogs should be discouraged. Histological examination of the skin is required to differentiate between the different follicular dysplasias as well as differentiating between follicular dysplasia and follicular atrophy due to endocrinopathy.  相似文献   

‘Progressive ataxia’ in a Charolais steer in New Zealand     

FI Hill  AF Julian  J Roiri 《New Zealand veterinary journal》2013,61(4)

Extract

Signs of progressive central nervous system disease in cattle aged 2 years and older should alert farmers and veterinarians to consider the possibility of bovine spongiform encephalopathy (BSE). Government veterinarians routinely assess all livestock slaughtered in meat plants in New Zealand for signs of any nervous disorder, including abnormalities of behaviour and mental state and abnormalities of posture and gait.  相似文献   

Vaccination-site sarcomas in cats in New Zealand     

D Aberdein  JS Munday  CB Dyer  CG Knight  AF French  IR Gibson 《New Zealand veterinary journal》2013,61(1)

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Nonverbal communication in veterinary practice.     

Cecile A Carson 《Veterinary Clinics of North America: Small Animal Practice》2007,37(1):49-63; abstract viii

Treating nonverbal communication with the thoughtfulness and observation with which we approach any other clinical problem can produce a set of skills that can be applied in every encounter. Skill development begins first with enhancing one's observations of nonverbal behavior and then diagnosing whether or not the client is feeling safe. Using one or more of the nonverbal skills when clients are feeling not-safe creates more satisfaction for the client and veterinarian and motivates clients to become full partners in their animal's care.  相似文献   

Use of three-dimensional computed tomography for diagnosis and treatment planning for open-mouth jaw locking in a cat     

Beam RC  Kunz DA  Cook CR  Carson RL  Briscoe P  Cook JL 《Journal of the American Veterinary Medical Association》2007,230(1):59-63

CASE DESCRIPTION: A 2.5-year-old spayed female Persian cat was evaluated for acute inability to close its mouth. CLINICAL FINDINGS: A wry-mouth malocclusion was evident, and the right side of the mandible was longer than the left side. The right mandibular tooth row appeared to be lowered. The lower jaw was persistently maintained in an open position. The presumptive diagnosis was open-mouth jaw locking. Diagnostic imaging with computed tomography and 3-dimensional reconstruction was performed for definitive diagnosis and to achieve a better understanding of the lesions. Imaging revealed locking of the right ramus of the mandible, which was displaced ventrolaterally, causing the coronoid process to impinge on the right zygomatic arch. TREATMENT AND OUTCOME: A bilateral partial ostectomy of the rostroventral margins of the zygomatic arches with an autogenous fat graft implantation was performed. The cat recovered without complications and by the following morning was bright, alert, and responsive and eating canned cat food comfortably. One year after surgery, the owner reported that the cat had continued to function well, was eating normally, and had not had any observed locking episodes since surgery. CLINICAL RELEVANCE: Unlike radiographic imaging, computed tomography may be used to create 3-dimensional reconstructions of structures in cases of suspected open-mouth jaw locking; improve evaluation of the lesions; and improve decision-making and client education for diagnosis, treatment options, and prognosis.  相似文献   

A national programme for mastitis control in Australia: Countdown Downunder     

PB Brightling  RD Dyson  AF Hope  J Penry 《Irish veterinary journal》2009,62(Z4):S52

In 1998, Countdown Downunder, Australia's national mastitis and cell count control programme, was created. With funding from the country's leading dairy organisation, Dairy Australia, this programme was originally intended to run for three years but is now in its tenth year. As it was the first time Australia had attempted a national approach to mastitis control on the farm, the first three years of the programme were largely concerned with the development of resources to be used by farmers and service providers. The second three years were devoted to training with both groups. Since that time, Countdown Downunder has entered into a second resource development phase. The goal of the programme was to achieve a reduction in the bulk milk somatic cell count from the Australian dairy herd. To achieve this, the programme had to develop resources with clear and consistent messages around mastitis and somatic cell count control on farms. It was determined that progress toward the goals would be made more rapidly if service providers were trained in the use of these resources prior to farmers. This paper reviews the Countdown Downunder programme from 1998 to 2007.  相似文献