Light flashes observed on skylab 4: the role of nuclear stars     

Rothwell PL  Filz RC  McNulty PJ 《Science (New York, N.Y.)》1976,193(4257):1002-1003

The astronauts on Skylab 4 observed bursts of intense visual light flash activity when their spacecraft passed through the South Atlantic Anomaly. Flash rates as high as 20 per minute have in the past been considered unexpectedly high. When the effect of nuclear interactions in and near the retina is included, the apparent anomaly is removed.  相似文献   

Isolation of a cytopathic calf rotavirus.     

M S McNulty  G M Allan  J B McFerran 《Research in veterinary science》1976,21(1):114-115

The isolation and serial passage in secondary and continuous cultures of calf kidney cells of a cytopathic calf rotavirus is described.  相似文献   

Aujeszky's disease in fattening pigs     

McNulty MS 《The Veterinary record》2003,153(11):340

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Studies on the immunity of the calf to colibacillosis--VII: the experimental reproduction of enteric colibacillosis in colostrum-fed calves.     

E F Logan  G R Pearson  M S McNulty 《The Veterinary record》1977,101(22):443-446

Eight newborn calves were challenged orally with a known enteropathogenic strain of Escherichia coli 0101 K?(A) and two to six hours later each calf was fed a minimum of three pints colostrum. All calves suffered from acute diarrhoea of varying severity within 24 to 48 hours of infection. Immunofluorescent and histological examination of the small intestine demonstrated adherence of the challenge organism to the epithelium and the presence of pathological lesions similar to those seen in colostrum-deprived calves with enteric colibacillosis. It was concluded that in order to be effective prophylactically, colostrum must be fed prior to infection.  相似文献   

Insecticidal potential of extracts,fractions, and molecules of Aconitum heterophyllum Wall ex. Royle against aphid Aphis craccivora Koch (Hemiptera: Aphididae)     

Sandeep Kumar  Anmol  Upendra Sharma  SG Eswara Reddy 《Pest management science》2023,79(4):1538-1546

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Hematological Changes in Nile Tilapia (Oreochromis niloticus) Infected with Streptococcus iniae by Nare Inoculation     

Shawn T  McNulty  Phillip H.  Klesius Craig A.  Shoemaker Joyce J.  Evans 《Journal of the World Aquaculture Society》2003,34(3):418-422

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Differential Rotation and Dynamics of the Solar Interior     

MJ Thompson  J Toomre  ER Anderson  HM Antia  G Berthomieu  D Burtonclay  SM Chitre  J Christensen-Dalsgaard  T Corbard  M DeRosa  CR Genovese  DO Gough  DA Haber  JW Harvey  F Hill  R Howe  SG Korzennik  AG Kosovichev  JW Leibacher  FP Pijpers  J Provost  EJ Rhodes  J Schou  T Sekii  PB Stark  PR Wilson 《Science (New York, N.Y.)》1996,272(5266):1300-1305

Splitting of the sun's global oscillation frequencies by large-scale flows can be used to investigate how rotation varies with radius and latitude within the solar interior. The nearly uninterrupted observations by the Global Oscillation Network Group (GONG) yield oscillation power spectra with high duty cycles and high signal-to-noise ratios. Frequency splittings derived from GONG observations confirm that the variation of rotation rate with latitude seen at the surface carries through much of the convection zone, at the base of which is an adjustment layer leading to latitudinally independent rotation at greater depths. A distinctive shear layer just below the surface is discernible at low to mid-latitudes.  相似文献   

Role of Sperm Velocity Variables Associated with Poultry Breed in ‘Last Male Precedence’     

J Santiago‐Moreno  C Castaño  A Toledano‐Díaz  MC Esteso  A López‐Sebastián  SG Dávila  JL Campo 《Reproduction in domestic animals》2014,49(1):134-139

It is well known that when a hen mates with multiple roosters, it is the sperm of the last male that usually fertilizes most of the eggs (‘last male precedence’). Sperm quality varies between males within a breed, but also between breeds, and thus, sperm competitiveness after mating may depend on the breeds of the roosters involved. The aim of the present work was to identify differences in sperm competitiveness between breeds, especially with respect to motility. A multibreed mating model was used. Blue Andaluza (BA) and Black Castellana (BC) hens left for 21 days with BA and BC roosters, respectively, were then left with Black‐barred Andaluza (Bb) roosters for another 21 days (experimental groups hBA‐rBC‐rBb and hBC‐rBA‐rBb). Bb roosters (as the second breed replacing the first) fertilized the majority of eggs in both the hBC‐rBA‐rBb and hBA‐rBC‐rBb groups. The percentage of offspring sired by BA roosters (8.0%) was higher (p < 0.05) than the percentage of chicks sired by BC roosters (2.1%). The fertility of the BC hens in the hBC‐rBA‐rBb group was higher (p < 0.01) than that of the BA hens in the hBA‐rBC‐rBb group. No difference in sperm concentration was seen between the breeds. Within the rapid sperm subpopulation (sperm velocity, >50 μm/s), Bb sperm showed a higher straight‐line velocity (VSL) and average path velocity (VAP) (p < 0.05) than BC sperm. The VSL and VAP values for Bb and BA sperm were similar. In conclusion, the present results show that the sperm of the BA breed, traditionally regarded as of moderate fertility, compensates for this drawback via sperm movement characteristics that afford it an advantage in competition scenarios involving males of other breeds. The VSL and VAP of the rapid sperm subpopulation may play the most important role in securing last male precedence.  相似文献   

病毒与鸡矮小综合征     

N.S.McNulty  高云  李华 《中国畜牧兽医》2000,27(1):50-51

矮小综合征,又称吸收不良综合征,是鸡的一种知之甚少的疾病。该病引起了相当大的损失,至今尚无有效的疫苗进行预防,只能通过改善饲养管理加以控制。70年代后期,养禽业出现这种肉仔鸡复杂的传染性疾病,此病在世界范围内流行,依其主要的临床症状和特殊部位的大体病变而命名,如吸收不良综合征、鸡苍白综合征、矮小综合征(RSS)、传染性生长障碍综合征和直升飞机病等。所有病例都有生长障碍、羽毛生长差等共同的临床症状,同时还伴随大量不完全一致的症状和病变,如死亡率上升、腹泻、胰腺萎缩、前胃炎、佝偻病及其它骨质变化以及胸腺和法氏囊萎…  相似文献   

Effect of vaccination of the dam on rotavirus infection in young calves   总被引：4，自引：0，他引：4  

M S McNulty  E F Logan 《The Veterinary record》1987,120(11):250-252

Vaccination of cows with a combined, inactivated, adjuvanted rotavirus and Escherichia coli vaccine resulted in increased neutralising antibody titres to rotavirus in serum and colostral whey. Evidence was obtained that vaccination resulted in a decreased incidence of rotavirus shedding and of abnormal faeces or diarrhoea in young calves fed colostrum and milk from the vaccinated dams. The E coli component of the vaccine was not evaluated because no natural challenge was evident.  相似文献