This study is the first to propose use of aluminum saline slag as source in synthesis alumina pillared clays (Al-PILC). Aluminum was extracted from this waste using both alkaline and acid solutions were compared for preparation intercalation used Al-PILC. Variations parameters such [OH–]/[Al3+], Al/clay (mmol/g), clay/volume solution ratios temperature studied processes. The solids obtained cha...

In this work, pillared bentonite with Al−Fe (Al−Fe−PILC) was synthesized and used as a heterogeneous Fenton-like catalyst in the oxidation of tartrazine azo-dye an aqueous solution. The modification Al-Fe mixed system concentrated medium, ultrasound assisted intercalation carried out, obtained characterized by XRF, XRD, N2 adsorption at 77 K. Al−Fe−PILC, using different amounts H2O2, expressed ...

Pseudomonas stutzeri lives in terrestrial and aquatic habitats and is capable of natural genetic transformation. After transposon mutagenesis, transformation-deficient mutants were isolated from a P. stutzeri JM300 strain. In one of them a gene which coded for a protein with 75% amino acid sequence identity to PilC of Pseudomonas aeruginosa, an accessory protein for type IV pilus biogenesis, wa...

Pili produced by Lactococcus lactis subsp. lactis are putative linear structures consisting of repetitive subunits of the major pilin PilB that forms the backbone, pilin PilA situated at the distal end of the pilus, and an anchoring pilin PilC that tethers the pilus to the peptidoglycan. We determined the nanomechanical properties of pili using optical-tweezers force spectroscopy. Single pili w...

This document is part of the PILC (Performance Implications of Link-Layer Characteristics) series of recommendations for "extreme network conditions", and focuses on network paths that traverse "high error-rate" links. Expires December 9, 1999 [Page 1] INTERNET DRAFT PILC Links with Errors June 1999 Because TCP is still the flagship protocol for reliable data transport on the Internet and is us...

In this paper we investigate the adsorption of various probe molecules in order to characterize the porous structure of a series of pillared interlayered clays (PILC). To that aim, volumetric and microcalorimetric adsorption experiments were performed on various Zr PILC samples using nitrogen, toluene, and mesitylene as probe molecules. For one of the samples, neutron scattering experiments wer...

كچ ي هد هقباس فده و : ييوراد ناهايگ زا هدافتسا اب يتبايد ناراميب رد مرس بولطمان ياهديپيل و زكولگ حطس نداد شهاك يم رادروخرب يدايز ينيلاب تيمها زا دشاب . هوك هرت تهابش رب ينبم يتاقيقحت دهاوش دوجو هب هجوت اب ي س و ي ر رظن زا خرب ي د دض و هرثؤم داوم ي تبا ي س ندوب ي ،ر رب رد اذل يسر هوك هرت نمزم و يكاروخ فرصم رثا رضاح ي ،زكوـلگ نازيم رب رت ي د ييارحص شوم مرس لاتوت لورتسلك و ديريسيلگ سررب دروم يتبا...

Kingella kingae is a gram-negative bacterium that colonizes the respiratory tract and is a common cause of septic arthritis and osteomyelitis. Despite the increasing frequency of K. kingae disease, little is known about the mechanism by which this organism adheres to respiratory epithelium and seeds joints and bones. Previous work showed that K. kingae expresses long surface fibers that vary in...

Abstract: Models in high frequency range for underground power cable connections are essential for the interpretation of partial discharge (PD) signals arising e.g. diagnostic techniques. This paper focuses on modeling of power cable joints. A lumped parameter odel and a cascaded transmission line model are proposed based on scattering parameters (S -parameters) measurement on a 10 kV oil-fille...

This document discusses the use of automatic repeat request (ARQ) procedures as an option in the design of a link protocol, and the impact of the use of ARQ on IP traffic travelling over the link. ARQ is described in a general way that includes its use over a wide range of underlying physical media, including cellular wireless, wireless LANs, RF links, and other types of bearer channel. This do...