Search Results - "Bell, Paul C"
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Gemini Surfactants: New Synthetic Vectors for Gene Transfection
Published in Angewandte Chemie International Edition (04-04-2003)“…The superior surfactant properties of cationic gemini surfactants are applied to the complex problem of introducing genes into cells. Of almost 250 new…”
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Transfection Mediated by Gemini Surfactants: Engineered Escape from the Endosomal Compartment
Published in Journal of the American Chemical Society (12-02-2003)“…The structure of the lipoplex formed from DNA and the sugar-based cationic gemini surfactant 1, which exhibits excellent transfection efficiency, has been…”
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Towards Uniform Online Spherical Tessellations
Published in Discrete & computational geometry (01-06-2022)“…The problem of uniformly placing N points onto a sphere finds applications in many areas. For example, points on the sphere correspond to unit quaternions as…”
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Decision Questions for Probabilistic Automata on Small Alphabets
Published in Logical methods in computer science (01-01-2023)“…We study the emptiness and $\lambda$-reachability problems for unary and binary Probabilistic Finite Automata (PFA) and characterise the complexity of these…”
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On the decidability and complexity of problems for restricted hierarchical hybrid systems
Published in Theoretical computer science (01-11-2016)“…We study variants of a recently introduced hybrid system model, called a Hierarchical Piecewise Constant Derivative (HPCD). These variants (loosely called…”
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The continuous Skolem-Pisot problem
Published in Theoretical computer science (06-09-2010)“…We study decidability and complexity questions related to a continuous analogue of the Skolem-Pisot problem concerning the zeros and nonnegativity of a linear…”
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Polynomially ambiguous probabilistic automata on restricted languages
Published in Journal of computer and system sciences (01-08-2022)“…We consider the computability and complexity of decision questions for Probabilistic Finite Automata (PFA) with sub-exponential ambiguity. We show that the…”
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Biophysical Characterization of an Integrin-Targeted Lipopolyplex Gene Delivery Vector
Published in Biochemistry (Easton) (13-11-2007)“…Nonviral gene delivery vectors now show good therapeutic potential: however, detailed characterization of the composition and macromolecular organization of…”
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On injectivity of quantum finite automata
Published in Journal of computer and system sciences (01-12-2021)“…We consider notions of freeness and ambiguity for the acceptance probability of Moore-Crutchfield Measure Once Quantum Finite Automata (MO-QFA). We study the…”
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The membership problem for subsemigroups of GL 2 ( Z ) is NP-complete
Published in Information and computation (01-01-2024)Get full text
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On the mortality problem: From multiplicative matrix equations to linear recurrence sequences and beyond
Published in Information and computation (01-12-2021)“…We consider a variant of the mortality problem: given k×k matrices A1,…,At, do there exist nonnegative integers m1,…,mt such that A1m1⋯Atmt equals the zero…”
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Targeted Gene Delivery to Human Airway Epithelial Cells with Synthetic Vectors Incorporating Novel Targeting Peptides Selected by Phage Display
Published in Journal of drug targeting (01-05-2004)“…Human airway epithelial cell targeting peptides were identified by biopanning on 1HAEo-cells, a well characterised epithelial cell line. Bound phage were…”
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Temperature induced aggregation in aqueous solution of a series of PEO–PPO–PEO copolymers
Published in International journal of pharmaceutics (15-11-1998)“…The temperature induced aggregation phenomena of a series of poly(ethylene oxide)–poly(propylene oxide)–poly(ethylene oxide) block copolymers (poloxamers) were…”
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Multiprocessor speed scaling for jobs with arbitrary sizes and deadlines
Published in Journal of combinatorial optimization (01-05-2015)“…In this paper we study energy efficient deadline scheduling on multiprocessors in which the processors consumes power at a rate of s α when running at speed s…”
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Decision Questions for Probabilistic Automata on Small Alphabets
Published 20-12-2023“…Logical Methods in Computer Science, Volume 19, Issue 4 (December 21, 2023) lmcs:9753 We study the emptiness and $\lambda$-reachability problems for unary and…”
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On Injectivity of Quantum Finite Automata
Published 30-06-2021“…We consider notions of freeness and ambiguity for the acceptance probability of Moore-Crutchfield Measure Once Quantum Finite Automata (MO-QFA). We study the…”
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Polynomially Ambiguous Probabilistic Automata on Restricted Languages
Published 25-02-2019“…We consider the computability and complexity of decision questions for Probabilistic Finite Automata (PFA) with sub-exponential ambiguity. We show that the…”
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On the Identity and Group Problems for Complex Heisenberg Matrices
Published 11-07-2023“…We study the Identity Problem, the problem of determining if a finitely generated semigroup of matrices contains the identity matrix; see Problem 3 (Chapter…”
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Decidability of cutpoint isolation for probabilistic finite automata on letter-bounded inputs
Published 18-02-2020“…We show the surprising result that the cutpoint isolation problem is decidable for Probabilistic Finite Automata (PFA) where input words are taken from a…”
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Towards Uniform Online Spherical Tessellations
Published 03-10-2018“…The problem of uniformly placing N points onto a sphere finds applications in many areas. For example, points on the sphere correspond to unit quaternions as…”
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