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Historical aspects of soil erosion in the Mejerda catchment, Tunisia

Agricultural use and related water erosion leads to significant changes in the sedimentological and hydrological characteristics of watersheds and thus means negative consequences for rural development. This research work aimed at putting present-day soil erosion of the important Mejerda catchment in to a historical context. The catchment of wadi Mejerda in northern Tunisia has experienced soil er

A 0.8mm2 9.6mW Implementation of a Multicarrier Faster-Than-Nyquist Signaling Iterative Decoder in 65nm CMOS

This paper presents a decoder for multi-carrier modulated signals employing Faster-than-Nyquist (FTN) signaling. FTN signaling is a method of improving bandwidth efficiency at the expense of higher processing complexity in the transceiver. The decoder can switch between orthogonal and FTN signaling modes and exploits channel properties to improve bandwidth efficiency. The decoder is fabricated in

Dynamic Phase Diagram of a Nonionic Surfactant Lamellar Phase

The dynamic phase diagram of triethylene glycol dodecyl ether (C12E3) in D2O was determined for 40, 50, and 60 wt % of surfactant. The shear flow effect on the nonionic lamellar phase was investigated as a function of temperature and concentration. The transition from planar lamellae (L-alpha)-to-multilamellar vesicles (MLVs) was characterized by means of rheology, rheo-small-angle neutron and lig

On the modelling of multicomponent acid extraction with long-chain aliphatic amines

The solvent extraction of phosphoric, hydrochloric, sulphuric, hydrofluosilicic and hydrofluoric acids with long-chain aliphatic amins is modelled. Pure acid equilibria are based on existing isotherms or calculated extraction constants when only experimental data are available. For binary mixtures binary combinations of acid complexes are added. In the aqueous phase Bromley's model for electrolyte

The mouse trap

Mouse models of asthma are now being used extensively in drug research. However, the successful unravelling of combinatorial interplays of cells and molecules in the murine airways may not be matched by equally successful demonstrations of an asthma-like pathophysiology. Here, Carl Persson, Jonas Erjefalt, Magnus Korsgren and Frank Sundler discuss the fact that major features of asthma may still n

NIKE: a new clinical tool for establishing levels of indications for cataract surgery

Purpose: The purpose of this study was to construct a new clinical tool for establishing levels of indications for cataract surgery, and to validate this tool. Methods: Teams from nine eye clinics reached an agreement about the need to develop a clinical tool for setting levels of indications for cataract surgery and about the items that should be included in the tool. The tool was to be called 'N

Which cancer patients die in nursing homes? Quality of life, medical and sociodemographic characteristics

In this study, cancer patients' characteristics associated with death in nursing homes were explored. The study sample included 395 cancer patients who had participated in a trial of palliative care, 260 ( 66%) patients died in hospital, 80 (20%) at home and 55 (14%) in nursing homes. Health-related quality of life was prospectively recorded using the EORTC QLQ-C30 questionnaire. Death in nursing

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Artiklen behandler de svenske pensionistorganisationers tilbøjelighed til at beskrive de ældre som en samfundsøkono-misk »risikogruppe«. Organisationernes ældrebilleder sættes ind i en samfundsmæssig kontekst, der viser at holdnin-gerne til ældre direkte afspejler omgivelsernes. Håkan Jönson er ph.d. i socialt arbejde, socionom og forsker ved Socialhøjskolen i Lund, Sverige. Hans afhandling behand

Three-dimensional outgrowth of a wood-rotting fungus added to a contaminated soil from a former gasworks site

The capability of wood-rotting fungi (WRF) to colonise contaminated soil is an important fungal characteristic in the development of WRF-based soil bioremediation, it is also important to have methods that monitor the presence of the WRF in the soil. In this lab-scale study, it was shown that it was possible to re-capture, localise and identify a brown-rot fungus, Antrodia vaillantii, after it has

The association between leptin and proinsulin is lost with central obesity.

Abstract. Söderberg S, Ahrén B, Eliasson M, DinesenB, Olsson T (Umeå University, Umeå, Lund University and Luleå Hospital, Lund, Sweden; and Steno Diabetes Center, Gentofte, Denmark). The association between leptin and proinsulin is lost with central obesity. J Intern Med 2002; 252: 140-148. OBJECTIVE: Hyperproinsulinaemia and hyperleptinaemia are interrelated features of the insulin resistance sy

Heat transfer in fibrous materials

This report presents theories and measurements of the mechanisms af heat transfer in fibrous materials (e.g. insulation of mineral wool type), and measurements of these mechanisms. The present work is part af a larger research program at the Division of Building Technology, Lund Institute of Technology, for investigating the behaviour of fibrous material as thermal insulation. A preliminary versio

Applications of a single-longitudinal-mode alexandrite laser for diagnostics of parameters of combustion interest

We report on the applications of a single-longitudinal-mode (SLM) pulsed alexandrite laser system for diagnostics of parameters of flow/combustion interest. The laser system is characterized by its narrow linewidth, high peak power, and broad tunablity. The absolute frequency of the laser output was monitored by a wavelength diagnostic system, which included a high-resolution confocal etalon and a

Adsorptive fouling of modified and unmodified commercial polymeric ultrafiltration membranes

The fouling tendency, due to adsorption on the pore walls, of two pairs of modified and unmodified ultrafiltration membranes, with similar observed retentions determined by dextran and gel permeation chromatography, was studied. The membranes investigated were made of modified and unmodified polyaramide (PA) and modified and unmodified polyvinylidene fluoride (PVDF). The PVDF membrane was surface-

Circulating heat shock protein and heat shock protein antibody levels in established hypertension.

OBJECTIVE Serum Hsp60 and anti-Hsp65 antibody levels are raised in subjects with borderline hypertension, and there is an association between circulating Hsp60 levels and early atherosclerosis. Given the recognized relationship between hypertension and atherosclerosis, this study determined heat shock protein and heat shock protein antibody levels in subjects with established hypertension.METHODS

Formation of phosphatidylethanol in vitro in red blood cells from healthy volunteers and chronic alcoholics.

Phosphatidylethanol (PEth) is an abnormal phospholipid, formed only in the presence of ethanol via a transphosphatidylation reaction of phospholipase D (PLD). PEth in blood is a promising new marker of alcohol abuse. Blood PEth is found almost exclusively in red cells. This study was performed to investigate a possible PEth formation in human red cells from alcoholics and healthy individuals, at p