Changes in vasotocin levels in relation to ovarian development in the catfish Heteropneustes fossilis exposed to altered photoperiod and temperature     

Radha Chaube  Rahul Kumar Singh  Keerikattil P. Joy 《Fish physiology and biochemistry》2015,41(5):1173-1186

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Effect of rinderpest vaccination of spermatogenesis in bulls     

K S Narasimhan  A R Krishnan  S A Quayam 《The Indian veterinary journal》1970,47(1):19-22

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Utilization of Weather Data in Predicting Bread Loaf Volume by Neural Network Method     

David Karki  Karl D. Glover  Krishna Bondalapati  Padmanaban G. Krishnan 《Cereal Chemistry》2016,93(5):471-477

The unique ability of wheat (Triticum aestivum L.) flour to produce cohesive dough has helped to make it the most widely used cereal crop for bread and other baked food products. Measurement of end‐use qualities, such as loaf volume, is ideally carried out through assessing loaves of bread; however, this is resource intensive. Predictive testing methods are more often utilized to identify wheat genotypes with potentially acceptable loaf volume, although more accurate predictive methods would be beneficial. Our objectives were to study the influence of weather observations on bread loaf volume and flour and dough quality data, to use a neural network (NN) model to predict loaf volume with select input data, and to compare the best multiple regression models identified with their NN counterparts. Weather data collected at 20 days after heading (DAH) showed the highest correlations with bread loaf volume when compared with prior intervals. A NN model containing maximum, minimum, and nighttime temperatures produced the highest coefficient of determination for predicting loaf volume. Our results showed that the NN model explained up to 20% more loaf volume variation than a similar regression model. Weather parameters representing conditions at 20 DAH played a significant role in loaf volume prediction.  相似文献   

Cross-protection against Salmonella Typhimurium infection conferred by a live attenuated Salmonella Enteritidis vaccine     

Rahul M. Nandre  Dajeong Lee  John Hwa Lee 《Canadian journal of veterinary research》2015,79(1):16-21

In this study, a genetically engineered live attenuated Salmonella Enteritidis (SE) vaccine was evaluated for its ability to protect against Salmonella Typhimurium (ST) infection in chickens. The birds were orally primed with the vaccine on the 1st day of life and given an oral booster at 5 wk of age. Control birds were orally inoculated with phosphate-buffered saline. Both groups of birds were orally challenged with a virulent ST strain at 9 wk of age. Compared with the control chickens, the vaccinated chickens had significantly higher levels of systemic IgG and mucosal IgA against specific ST antigens and a significantly greater lymphoproliferative response to ST antigens. The excretion of ST into the feces was significantly lower in the vaccinated group than in the control group on days 9 and 13 d after challenge. In addition, the vaccinated group had significantly fewer pronounced gross lesions in the liver and spleen and lower bacterial counts in the internal organs than the control group after challenge. These data indicate that genetically engineered live attenuated SE may induce humoral and cellular immune responses against ST antigens and may confer protection against virulent ST challenge.  相似文献   

On energy absorption capacity,flexural and dynamic properties of flax/epoxy composite tubes     

Libo Yan  Nawawi Chouw  Krishnan Jayaraman 《Fibers and Polymers》2014,15(6):1270-1277

In this study, energy absorption capacity, flexural and dynamic properties of flax fibre reinforced epoxy polymer composite (FFRP) tubes are investigated. The energy absorption capacity of the tubes is investigated under uniaxial compression. Flexural behaviour of the tubes is studied under four-point bending and the dynamic properties (i.e., natural frequency and damping characteristics) are evaluated by impact hammer vibration testing of the tube specimens. The damping characteristics of the tubes are determined by using both a logarithmic decrement curve and the half-peak bandwidth method. The influence of tube laminate thickness and specimen size on the mechanical properties of FFRP tubes is determined. Compressive testing indicates that the FFRP tube provides a specific absorbed energy of 22 J/g, which is close to the conventional metal energy absorption materials, i.e. stainless steel and aluminium tubes. Flexural study shows that the FFRP tube exhibits a brittle failure as similar to that of the FFRP composites in a flat-coupon tension. The load carrying capacity and deflection of the tube increase with an increase in the tube thickness. Impact loading test concludes that an increase in tube thickness leads to a reduction in natural frequency and damping ratio of the tubes. The FFRP tubes have sizedependent dynamic properties, i.e. an increase in tube size increased the natural frequency but reduced the damping ratio of the specimens remarkably. However, all FFRP tubes have high damping ratios, thus reducing the effect of dynamic loading on the structural response. Therefore, this study suggests that FFRP tubes could be used in several structural applications, i.e. in automotive as energy absorbers and in civil infrastructure as poles.  相似文献   

Morphological and molecular characterization of Satputia (Luffa hermaphrodita Singh & Bhandari) revealed substantial diversity for use in breeding programme     

Bhutia  Nangsol D.  Sureja  Amish K.  Munshi  A. D.  Verma  Manjusha  Arya  Lalit  Krishnan  S. Gopala  Gurung  B. 《Genetic Resources and Crop Evolution》2022,69(7):2485-2500

Genetic Resources and Crop Evolution - Luffa hermaphrodita Singh & Bhandari, known as Satputia, a semi-wild taxon originating from L. graveolens is an underutilized vegetable. It has a...  相似文献   

Multiple Induced Spawnings of the Indian Catfish Heteropneustes fossilis (Bloch) within a Prolonged Spawning Season     

Deoraj  Alok  T. Krishnan    G. P. Talwar    Lalit C.  Garg 《Journal of the World Aquaculture Society》1998,29(2):252-258

Abstract Singhi, the Indian catfish Heteropneustes fossilis , attained gonadal maturity repeatedly in a single spawning cycle by photothermal treatment. After the first spawning, maintenance at 30 C and 14 h light/10 h dark for 3 wk induced recruitment of the next batch of mature oocytes for subsequent spawnings. The number of eggs released declined with each spawning. However, fertilizability of the eggs was maintained until the fifth spawning. Mature fish were induced to spawn by D-Lys⁶ salmon gonadotropin-releasing hormone agonist administration. The dose of salmon gonadotropin-releasing hormone agonist for the second and subsequent spawnings was determined to be 25-fold less compared to the dose administered for the first spawning. Fish released the maximum number of eggs upon induction when they were maintained continuously at 30 C and 14 h light/10 h dark for 6 wk. The result obtained in the present study points to a possibility of obtaining multiple spawnings from those species of farmed fish which spawn once a year.  相似文献   

A muscleblind knockout model for myotonic dystrophy     

Kanadia RN  Johnstone KA  Mankodi A  Lungu C  Thornton CA  Esson D  Timmers AM  Hauswirth WW  Swanson MS 《Science (New York, N.Y.)》2003,302(5652):1978-1980

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Brain aluminum distribution in Alzheimer's disease and experimental neurofibrillary degeneration   总被引：31，自引：0，他引：31  

D R Crapper  S S Krishnan  A J Dalton 《Science (New York, N.Y.)》1973,180(85):511-513

Neurofibrillary degeneration is an important pathological finding in senile and presenile dementia of the Alzheimer type. Experimentally, aluminum induces neurofibrillary degeneration in neurons of higher mammals. Aluminum concentrations approaching those used experimentally have been found in some regions of the brains of patients with Alzheimer's disease.  相似文献   

A note on an embryonal nephroma met with in a fowl     

R Krishnan 《The Indian veterinary journal》1969,46(4):287-288

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