Results 221 to 230 of about 589,081 (241)
Some of the next articles are maybe not open access.
Subtractive Categories and Extended Subtractions
Applied Categorical Structures, 2009We introduce a notion of an extended operation which should serve as a new tool for the study of categories like Mal’tsev, unital, strongly unital and subtractive categories. However, in the present paper we are only concerned with subtractive categories, and accordingly, most of the time we will deal with extended subtractions, which are particular ...
Dominique Bourn, Zurab Janelidze
openaire +2 more sources
Acta Radiologica. Diagnosis, 1975
The purpose of subtraction of angiographic images is to demonstrate the vessels free of superimposed, disturbing image noise. With the aid of physical film parameters the theoretic basis for an optimum subtraction technique is presented.
U. Welander, Ch. Hårdstedt
openaire +3 more sources
The purpose of subtraction of angiographic images is to demonstrate the vessels free of superimposed, disturbing image noise. With the aid of physical film parameters the theoretic basis for an optimum subtraction technique is presented.
U. Welander, Ch. Hårdstedt
openaire +3 more sources
2007
Subtractive hybridization, like serial analysis of gene expression (SAGE), RNA arbitrarily primed polymerase chain reaction (RAP-PCR) and microarrays, is a screening method for differentially expressed genes. At first, poly-A+-RNA is isolated and reverse transcribed into cDNA. With the SMART technology, total RNA can be used.
Jörg H W, Distler +3 more
openaire +2 more sources
Subtractive hybridization, like serial analysis of gene expression (SAGE), RNA arbitrarily primed polymerase chain reaction (RAP-PCR) and microarrays, is a screening method for differentially expressed genes. At first, poly-A+-RNA is isolated and reverse transcribed into cDNA. With the SMART technology, total RNA can be used.
Jörg H W, Distler +3 more
openaire +2 more sources
2020
Subtraction consists in shortening the shape of the word. It operates on morphological bases such as roots, stems, and words in word-formation and inflection. Cognitively, subtraction is the opposite of affixation, since the latter adds meaning and form (an overt affix) to roots, stems, or words, while the former adds meaning through subtraction of ...
openaire +3 more sources
Subtraction consists in shortening the shape of the word. It operates on morphological bases such as roots, stems, and words in word-formation and inflection. Cognitively, subtraction is the opposite of affixation, since the latter adds meaning and form (an overt affix) to roots, stems, or words, while the former adds meaning through subtraction of ...
openaire +3 more sources
Science, 1993
A general problem in genetics is the identification of specific DNA sequence differences underlying phenotypic variation. These differences can be foreign DNA segments from an infecting pathogen that integrate into a host genome, spontaneously arising DNA rearrangements or point mutations that cause cancer in somatic tissues, or a wide variety of ...
openaire +3 more sources
A general problem in genetics is the identification of specific DNA sequence differences underlying phenotypic variation. These differences can be foreign DNA segments from an infecting pathogen that integrate into a host genome, spontaneously arising DNA rearrangements or point mutations that cause cancer in somatic tissues, or a wide variety of ...
openaire +3 more sources
Applied Optics, 1971
A holographic technique by which two dissimilar optical fields can be subtracted to yield only their difference is presented. The principle underlying this technique is that of optical interference between a holographically reconstructed field and a direct real-time one. Experimental verification is presented for the three cases of image-plane, fourier-
K, Bromley +3 more
openaire +2 more sources
A holographic technique by which two dissimilar optical fields can be subtracted to yield only their difference is presented. The principle underlying this technique is that of optical interference between a holographically reconstructed field and a direct real-time one. Experimental verification is presented for the three cases of image-plane, fourier-
K, Bromley +3 more
openaire +2 more sources
Radiology, 1977
Subtraction sialography is described and demonstrated to be a simple yet helpful technique in evaluating the salivary glands. The improved visualization of the ductal system is demonstrated.
openaire +2 more sources
Subtraction sialography is described and demonstrated to be a simple yet helpful technique in evaluating the salivary glands. The improved visualization of the ductal system is demonstrated.
openaire +2 more sources
Subtraction digital holography
Applied Optics, 2003Overlapping of the desired (first-order) and undesired (zero-order) terms originating from the recorded primary-fringe patterns in digital holography is a problem without a real-time solution. We propose a procedure for suppressing the zero-order disturbance that is realizable in real time.
Nazif Demoli +2 more
openaire +3 more sources
SUBTRACT: a computer program for modeling the process of subtractive hybridization
Bioinformatics, 1995We report on a new software tool, SUBTRACT, which allows the analysis of the possible strategies for an experiment based on a mathematical model of subtractive hybridization. The program helps the experimenter choose the optimal strategy and conditions for performing the reaction.
Olga D. Ermolaeva, Mark C. Wagner
openaire +3 more sources
Optimization of subtractive hybridization in construction of subtractive cDNA libraries
Genetic Analysis: Biomolecular Engineering, 1994The efficiency of subtraction, integrity of residual single-stranded cDNA, and efficient recovery of nanogram quantities of double-stranded cDNA are the three most important factors affecting quality of subtractive hybridization reactions prior to subtractive cDNA library construction.
Gin Wu, Shiawhwa Su, R. Curtis Bird
openaire +3 more sources