نتایج جستجو برای Modification

تعداد نتایج: 86422  

1998
Liang Peng,

We propose a technique to modify colors in photographic images predicting the color appearance of objects in an image under different illuminations. Using the dichromatic surface reflectance model, we estimate the illumination spectrum and the spectrum of the diffuse surface reflectance via the color histogram and subspace analyses. With this estimated spectral information, and the spectrum of ...

2006
PEGGY G. LEMAUX,

Genetic modification of plants and animals by sexual crossing has been taking place for thousands of years. It began when humans decided to stay in one place rather than move from place to place in search of food. To increase the amount of food available they chose plants or animals with improved characteristics to breed, or “cross,” for the next generation. For example, they might have crossed...

2011
A. A. Chernikov,

Contents 1. Introduction 2. History of the problem 3. Physical basis for artificial modification of clouds and precipitation 4. The enhancement and redistribution of precipitation 5. Hail suppression 6. Fog dispersal 7. Dispersal of super cooled low-level clouds and precipitation 8. Other weather modification experiments 9. Conclusions Glossary Bibliography Biographical Sketches

Journal: :The Journal of General Physiology 1971
Philip A. Knauf, Aser Rothstein,

The amino-reactive reagent, 4-acetamido-4'-isothiocyanostilbene-2,2'-disulfonic acid (SITS),(1) considerably reduces the uptake of the sulfhydryl agent, parachloromercuriphenylsulfonic acid (PCMBS), but does not reduce its effects on cation permeability and on cation transport. These data indicate that PCMBS enters the membrane by at least two channels, one sensitive and the other insensitive t...

2005
JAMES E. SKINNER,

Abrupt occlusion of the left anterior descending coronary artery was performed on 43x unanesthetized farm pigs in order to evaluate the relative effects on the latency to ventricular fibrillation (\VFL) of 1 ) adaptation of the animals to the laboratory, and 2) beta-receptor blockade by propranolol. Compared to control values, VFL, was greatly lengthened (i.e., VF delayed or prevented) by adapt...

Journal: :The British journal of ophthalmology 1956
P J EVANS,

THE corneal needle recently described (Evans, 1954) has filled a need in corneal surgery and continues to give satisfactory results. The makerst have now suggested a modification which I find is an improvement. The new version of the n.edle has the eye placed sideways, that is, in the lateral plane instead of in the same plane as the blade, and the eye is grooved as before. It will be realized ...

2007
D. C. Kincaid,

Methods of modifying the water distribution pattern of an impact-drive sprinkler are described. A method of pattern modification called intermittent diffusion is introduced. A deflector attached to the drive arm intermittently diffuses the jet of a standard circular-orifice nozzle, producing desirable pattern shapes while maintaining a large pattern radius. Uniformity of application for both wi...

2012
Jolon Dyer, Anita Grosvenor,

Many natural fibres, including wool, cashmere and silk, are protein-based materials; the dry weight of wool is almost entirely derived from proteins (Maclaren & Milligan 1981). As such, they possess an inherent structural and chemical heterogeneity not found in synthetic polymers. Although typically less heterogeneous than biological fibres, the rapidly emerging range of commercially available ...

Journal: :Journal of medical genetics 2000
C A Johnson,

“Physicians consider that when they have discovered the cause of disease, they have also discovered the method of treating it.” Cicero, Tusculan Disputations, III.x.23. In the last few years, the exciting realisation in the field of gene regulation is that transcription factors can function by recruiting large, multiprotein complexes which mediate several types of chromatin modification and rem...

2014
Daniel Lassiter, Margaret Jacks,

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