نتایج جستجو برای: مکانیسم گمشدن تصادفی mar

تعداد نتایج: 124866  

Journal: :Journal of bacteriology 1997
D G White J D Goldman B Demple S B Levy

Escherichia coli K-12 strains are normally tolerant to n-hexane and susceptible to cyclohexane. Constitutive expression of marA of the multiple antibiotic resistance (mar) locus or of the soxS or robA gene product produced tolerance to cyclohexane. Inactivation of the mar locus or the robA locus, but not the soxRS locus, increased organic solvent susceptibility in the wild type and Mar mutants ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1998
K Will G Warnecke L Wiesmüller W Deppert

Mutant, but not wild-type p53 binds with high affinity to a variety of MAR-DNA elements (MARs), suggesting that MAR-binding of mutant p53 relates to the dominant-oncogenic activities proposed for mutant p53. MARs recognized by mutant p53 share AT richness and contain variations of an AATATATTT "DNA-unwinding motif," which enhances the structural dynamics of chromatin and promotes regional DNA b...

Journal: :Genetics and molecular research : GMR 2015
F Wang J H Zhang T Y Wang W H Dong X J Yang X Y Wang L Wang R Yang Q Li C P Zhao

We investigated the effects of different directions of insertion of matrix attachment region (MAR) sequences on transgenic expression in stably transformed Chinese hamster ovary (CHO) cells. The MAR sequences were inserted in forward or reverse directions into the expression vectors, and transfected into CHO cells. The expression of the chloramphenicol acetyltransferase (CAT) reporter gene and ...

Journal: :I. J. Bifurcation and Chaos 2010
Karina I. Mazzitello Constancio M. Arizmendi Alvaro L. Salas Brito Hilary G. E. Hentschel

KARINA I. MAZZITELLO, CONSTANCIO M. ARIZMENDI∗, ALVARO L. SALAS BRITO† and HILARY G. E. HENTSCHEL‡ CONICET-Facultad de Ingenieŕıa, Universidad Nacional de Mar del Plata, Juan B. Justo 4302, B7608FDQ Mar del Plata, Argentina ∗Facultad de Ingenieŕıa, Universidad Nacional de Mar del Plata, Juan B. Justo 4302, B7608FDQ Mar del Plata, Argentina †Univ Autonoma Metropolitana Azcapotzalco, Lab Sistemas...

Journal: : 2021

سنجنده‌های دوقلوی MSI سنتینل‌-2، از لحاظ توان تفکیک مکانی، شباهت بسیاری به سنجندة OLI لندست 8 دارند که آژانس فضایی اروپا، با هدف افزایش داده‌های ادامه‌دار برای پایش سطح زمین، آنها را فضا پرتاب کرد. در این مطالعه، قابلیت داده‌ها واحدهای سنگی و دگرسانی، محدودة کانسار فسفات اسفوردی، ارزیابی تلفیق‌شده، مقایسه شد. بارزکردن منطقه، روش بسط عدم همبستگی استفاده به‌منظور مقایسه‌های آماری، اجرای ماشین برد...

2015
Jin Tian

The notion of missing at random (MAR) plays a central role in the theory underlying current methods for handling missing data. However the standard definition of MAR is difficult to interpret in practice. In this paper, we assume the missing data model is represented as a directed acyclic graph that not only encodes the dependencies among the variables but also explicitly portrays the causal me...

Journal: :Journal of clinical monitoring and computing 2006
Heli Hytti Reijo Takalo Heimo Ihalainen

In the present paper, the theoretical background of multivariate autoregressive modelling (MAR) is explained. The motivation for MAR modelling is the need to study the linear relationships between signals. In biomedical engineering, MAR modelling is used especially in the analysis of cardiovascular dynamics and electroencephalographic signals, because it allows determination of physiologically ...

1999
Takayuki NAKACHI Tatsuya FUJII Junji SUZUKI

In this paper, we propose an adaptive predictive coding method based on image segmentation for lossless compression. MAR (Multiplicative Autoregressive) predictive coding is an efficient lossless compression scheme. Predictors of the MAR model can be adapted to changes in the local image statistics due to its local image processing. However, the performance of the MAR method is reduced when app...

2017
Alvaro Sanchez-Larsen Gemma Aznar-Lain Begoña Benito Alessandro Principe Miguel Ley Adrià Tauste Campo Rodrigo Rocamora

a Epilepsy Monitoring Unit, Department of Neurology, Hospital del Mar, Passeig Marítim 25-29, 08003 Barcelona, Spain b Epilepsy Monitoring Unit, Pediatric Department, Hospital del Mar, Passeig Marítim 25-29, 08003 Barcelona, Spain c Electrophysiology Unit, Department of Cardiology, Hospital del Mar, Passeig Marítim 25-29, 08003 Barcelona, Spain d IMIM (Hospital del Mar Medical Research Institut...

Journal: :Theoría. Revista del Colegio de Filosofía 2010

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