... The weakest link If you consider the entire structured cabling Channel, from the PC to the switch, the weakest link is the modular plug. This is the point that has the potential ... can use marginal patch cords and still pass Channel requirements, but if the same patch cord is added to a marginal Permanent Link, the Channel would fail. Aside from continuity testing, patch cords ... jack in the fixture wasn’t properly centered, your pass means nothing. Fluke Networks DSP-4300 with DSP Patch Cord Test Adapters Application Note The Weakest Link in High-Performance Cabling Systems A...
Ngày tải lên: 26/10/2013, 19:15
... The weakest link If you consider the entire structured cabling Channel, from the PC to the switch, the weakest link is the modular plug. This is the point that has the potential ... can use marginal patch cords and still pass Channel requirements, but if the same patch cord is added to a marginal Permanent Link, the Channel would fail. Aside from continuity testing, patch cords ... jack in the fixture wasn’t properly centered, your pass means nothing. Fluke Networks DSP-4300 with DSP Patch Cord Test Adapters Application Note The Weakest Link in High-Performance Cabling Systems A...
Ngày tải lên: 16/01/2014, 21:20
Tài liệu Alarm Bells in Medicine Danger Symptoms in Medicine, Surgery and Clinical Specialties pptx
... BELLS IN MEDICINE Alarm Bells in Medicine Danger Symptoms in Medicine, Surgery and Clinical Specialties Nadeem Ali Specialist Registrar Royal Victoria Infirmary, Newcastle-upon-Tyne 3 Infective ... Unwit- nessed falls, not due to trips or slips, in older persons who are 16 ALARM BELLS IN MEDICINE Alarm Bells in Medicine Danger Symptoms in Medicine, Surgery and Clinical Specialties 3 Spontaneous pneumothorax Patients ... of Congress Cataloging -in- Publication Data Alarm bells in medicine : danger symptoms in medicine, surgery, and clinical specialties/[edited by] Nadeem Ali. p. ; cm. Includes index. ISBN-13: 978-0-7279-1819-2...
Ngày tải lên: 19/02/2014, 09:20
Báo cáo khoa học: Origins of DNA replication in the three domains of life pdf
... Cdc6 proteins [60,61]. As can be seen in Fig. 4, both proteins possess N-terminal AAA + domains and C-terminal DNA binding domains (DBDs). In DnaA, the DBD contains a helix-turn-helix; in the archaeal ... The unwinding of this intrinsically meltable DNA is a key step in replication initiation at origins. Under highly defined in vitro conditions, DnaA is capable of medi- ating partial unwinding of ... combination of DNA bending induced by DnaA and the cooperative interactions between DnaA monomers on DNA result in local topological tension that manifests itself by unwinding of this intrinsically...
Ngày tải lên: 07/03/2014, 21:20
Báo cáo khoa học: Molecular dynamics structures of peptide nucleic acidÆDNA hybrid in the wild-type and mutated alleles of Ki-ras proto-oncogene ppt
... endo domain. Discussion Base pair mismatch in duplex DNA contributes an ele- ment of instability resulting in lowering of the melting temperature and increase in free energy. Surprisingly, the ... hydrogen bond in PNA DNA than in DNA duplex. As expected, these bring forth significant varia- bleness in the water interactions surrounding the mis- match. Water interaction in the vicinity of A ... (T m ) in the former. Base stacking in the vicinity of A C mismatch in PNA DNA and DNA duplexes Intra strand base stacking at the AC(6–7) (Fig. 2A) & CC(7–8) steps (Fig. 2B) of the DNA strand,...
Ngày tải lên: 07/03/2014, 21:20
Biotechnology new ways in medicine
... for manipulating the genetic material DNA. Recombinant proteins proteins obtained by recombining DNA, e.g. by introducing human genes into bacterial cells. Therapeutic proteins proteins used as ... inhalers is in progress (especially for the relatively stable insulin mol- ecule), injection remains the only option for introducing biopharmaceuticals into the body. Nowadays all the steps in ... research-inten- sive as the healthcare industry. Any findings and methods discovered by universities and institutes working in the life sciences usually find their way immediately into the industry’s development...
Ngày tải lên: 13/03/2014, 21:54
Báo cáo khoa học: Initiation of JC virus DNA replication in vitro by human and mouse DNA polymerase a-primase ppt
... products greater than four nucleotides in length. Murine DNA polymerase a-primase is absolutely inactive in initiating SV40 DNA replication in an assay consisting of purified enzymes [26,27]. We then ... facilitate initiation of replication in vivo but not in vitro, perhaps by alleviating nucleosome repression or by assisting in origin unwinding under conditions of altered template DNA superhelicity ... nucleotide incorporation in the JCV system by murine DNA polymerase a-primase is dependent upon the JCV DNA replication origin (Fig. 1B) and results in DpnI-resistant products (Fig. 2), indicating that...
Ngày tải lên: 17/03/2014, 03:20
Báo cáo Y học: DNA supercoiling in Escherichia coli is under tight and subtle homeostatic control, involving gene-expression and metabolic regulation of both topoisomerase I and DNA gyrase docx
... [17]. Supercoiling assay DNA supercoiling was assessed in t erms of the linking number of intracellular plasmid pBR322 [18]. DNA super- coiling was expressed as t he ac tive linking number, aLk ... of the supercoiling is constrained by proteins binding to the DNA [1]. This constraint does not depend on the c ontinuous expenditure of ATP. The r emaining supercoils are maintained actively at the ... in Mops (40 m M , pH 7.4) minimal salts medium [15] containing 0.5% w/v glucose, tricine ( 4 m M ), valine, le ucine a nd isoleu cine (40 lgámL )1 each), thiamine (10 lgámL )1 ) and ampicillin as...
Ngày tải lên: 18/03/2014, 01:20
Báo cáo khoa học: Epigenetics: differential DNA methylation in mammalian somatic tissues ppt
... expressed in a tissue-specific manner showed a significant increase in expression level in an in vivo system lacking DNA methylation [14]. These data suggested that DNA methylation had no role in regulating ... twins are essentially indistinguishable in their epigenetic markings, whereas older monozygous twins exhibit remarkable differences in overall content and genomic distribution of 5-methylcytosine ... regulation mechanisms involved in tissue differentiation are unknown. Intragenic DNA methylation is known to be capable of altering the chromatin structure and elonga- tion efficiency in mammalian cells, depleting...
Ngày tải lên: 23/03/2014, 07:20
CONFOCAL LASER MICROSCOPY - PRINCIPLES AND APPLICATIONS IN MEDICINE, BIOLOGY, AND THE FOOD SCIENCES doc
... key insights such as the one Minsky had more than half a century ago. Neil Lagali Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Link ping University, Link ping, ... ideas contained in the book. Publishing Process Manager Oliver Kurelic Technical Editor InTech DTP team Cover InTech Design team First published March, 2013 Printed in Croatia A free online edition ... Thus, having each pixel a pair of fluorescent intensities in a Cartesian system. In the scatterplot, pixels having lower fluorescent intensities are close to the origin of abscissa and ordinate,...
Ngày tải lên: 23/03/2014, 10:20
Báo cáo khoa học: Cytochrome P460 of Nitrosomonas europaea Formation of the heme-lysine cross-link in a heterologous host and mutagenic conversion to a non-cross-linked cytochrome c ¢ pot
... of heme-cysteinyl-linked peptides in the fragments from the wild-type protein is in keeping with an apparent heme lability imparted by the crosslink to lysine in the wild-type protein [10]. Fragments representing ... thus confirming the role of the crosslink in determining the Soret spectrum. Although catalytic activity was lost in the mutants, the ligand-binding capability and thus the penta- coordinate nature ... crosslink to the heme (causing it to gain the ability to catalyze hydroxylamine oxidation), then mutants of cytochrome P460, in which the Lys70 is replaced byanaminoacidresidueunabletocrosslinktotheactive site...
Ngày tải lên: 23/03/2014, 17:21
Molecular Cloning – Selected Applications in Medicine and Biology Edited by Gregory G. Brown potx
... skin secretions contain a large number of antimicrobial peptides, including aurein 1.2, citropin 1.1, gaegurins, magainin, and magainin analogues, which have shown selective toxicity against ... Anosmin-1 is shown to be a heparin binding protein and formation of the heparin-Anosmin binary complex is believed to be crucial for the function of the protein (Bulow et al., 2002). Interestingly, ... al. (2000). Lysosomal cathepsin B plays an important role in antigen processing, while cathepsin D is involved in degradation of the invariant chain in ovalbumin-immunized mice. Immunology...
Ngày tải lên: 24/03/2014, 02:21
Báo cáo Y học: Proteolytic action of duodenase is required to induce DNA synthesis in pulmonary artery fibroblasts A role for phosphoinositide 3-kinase pot
... Employing a range of selective inhibitors, we investigated the r oles of PtdIns 3-kinase, MEK1/ERK, p rotein kinase C a nd pertussis t oxin-sensitive G-proteins. Only partial inhibition of DNA ... of protein kinase C partially attenuated thrombin-induced p70 s6k activation, which would concur with our findings that inhibition of protein kinase C results in partial inhibition of DNA synthesis. To ... Veterinary Pathology, University of Edinburgh, Easter Bush Veterinary Centre, Roslin, Edinburgh, UK; 4 Respiratory Medicine Unit, Department of Medicine, University of Cambridge School of Clinical...
Ngày tải lên: 24/03/2014, 03:21
Báo cáo Y học: Interferon-alpha inhibits Stat5 DNA-binding in IL-2 stimulated primary T-lymphocytes doc
Ngày tải lên: 31/03/2014, 15:20
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