15 research outputs found
Travelers With Cutaneous Leishmaniasis Cured Without Systemic Therapy
Guidelines recommend wound care and/or local therapy as first-line treatment for cutaneous leishmaniasis. An analysis of a referral treatment program in 135 travelers showed that this approach was feasible in 62% of patients, with positive outcome in 83% of evaluable patient
Novel compact double balanced coplanar active mixer Application to a single chip MMIC receiver for satellite repeater
This paper proposes a new compact double balanced coplanar mixer suitable for satellite repeaters. Compared to the present 14/12GHz satellite mixers, its size is divided by 3 and it provides 2dB gain instead of the classical 10dB loss. This mixer was successfully integrated with 4 other functions in a single chip receiver MMIC
1W/mm GaAs pHEMT for realization of linear power amplifier in the K band.
The realization and characterization of Al0.22Ga0.78As/In0.22Ga0.78As/GaAs power pHEMT are reported. This structure was optimized to obtain a quasi flat transconductance profile to increase the device linearity near the compression. A maximum single carrier output power higher than 0.8 W/mm for 2 dB compression has been obtained, with more than 30 % power added efficiency and 7.4 dB linear gain at 18.5 GHz. Two tones intermodulation distortion have shown a C/I ratio of 19.9 dBc and 42.3 dBc to the 3 rd and 5 th order respectively, for an input two tones power corresponding to 1 dB compression input power in CW
S-band SSPA for multicarrier applications
A light weight, low distortion SSPA at S-band for multicarrier signal operation has been developed. The SSPA uses the MMIC chips for the low level amplification section and hybrid PHEMT devices for the medium level and high power level sections. The SSPA exhibits at class A operation an output power of 3W, a noise power ratio (NPR) higher than 14dB with an associated PAE of 23% over the frequency band 2.16 - 2.20GHz
A balanced uniplanar active MMIC combiner/divider with improved power capability
Present paper deals with a new active uniplanar power combiner/divider which presents major interest for MMICs future applications. Its design takes advantages on uniplanar interconnection technology based on coplanar strips and waveguides (CPS and CPW). Moreover, this circuit allows to realise either a 180° out of phase power combiner or a 180° out of phase power divider. Finally, it offers new potentialities compared to the early published basic circuits, featuring superior electrical performances such as an improved gain value (about 9 dB) and a suitability for an integration in more complete functions as balanced mixers
External validity of the well-being related to food questionnaire (Well-Bfq©): variations according to the subjects' nutritional status
International audienceObjectives To document the external validation of the Well-Being related to Food Questionnaire (Well-BFQ) by studying variations of scores according to subjects’ nutritional status. The Well-BFQ was developed after conducting interviews with healthy subjects and subjects with digestive, joint or immunity complaints. Its structure was determined using principal component analyses and confirmed using factor analyses with multi-trait analyses. Methods The Well-BFQ has a modular backbone with sub-dimensions measuring pleasure, security, relaxation, digestion and satiety, energy and psychology, health (ageing, bowel movement, immunity and mobility) and food behaviour. Each sub-dimension is rated from 0 to 100; distributions were compared according to the nutritional status of the subjects using variance analyses. Nutritional status was evaluated according to the PNNS questionnaire (French National Health Nutritional Program). Results Subjects (N=444) were aged 42±15 years and 71.6% women; 18.1% had a balanced diet (BD), 14.7% a non-balanced diet (NBD) and 67.1% a standard diet (SD). The majority of the dimensions assessed with the Well-BFQ were significantly higher (i.e. better food-related well-being) in subjects with a BD than in those with a NBD; even the dimensions assessing commensality (eating as a group) and behavioural attitudes toward buying and cooking food. In particular, the security dimension was rated 67.9±19.5 in BD compared with 56.9±25.2 in NBD and 61.1±21.3 in SD (pConclusions This study contributes to the external validity of Well-BFQ by demonstrating the expected positive correlation of the well-being it measures and the quality of the diet of the subjects. Its ability to measure well-being differences according eating habits makes it a promising tool for epidemiological surveys and experimental trials
How french subjects describe well-being from food and eating habits? Development, and scoring definition of the well-being related to food questionnaire (Well-Bfq)
International audienceObjectives To develop and validate an instrument assessing well-being associated with food and eating habits in a general healthy population, suitable for future food allegation support. Providing well-being and maintaining good health are two main objectives subjects seek from their diet. To date validated questionnaires measuring well-being in the specific context of food in general population do not exist. Methods Thorough standardized methodology was followed. Qualitative data from 24 discussion groups conducted with healthy subjects (n=102) and subjects with digestive, joint or immunity complaints (n=96) served to develop the core of the Well-Being related to Food Questionnaire (Well-BFQ). Preliminary validation was conducted with 444 subjects with balanced diet (n=81), non-balanced diet (n=65), or standard diet (n=298). Principal component analyses (PCA) and exploratory factor analyses were performed sequentially to reduce the number of items and determine the questionnaire structure. Confirmatory factor analyses with multi-trait analyses were carried out to confirm its structure. Results The validated structure of the Well-BFQ has a modular backbone composed of “Grocery shopping”, “Cooking”, “Dining places”, “Commensality”, “Eating and drinking” and “Eating habits and health”. Each module is measured in terms of food behaviour and benefits: immediate, (Pleasure, Security, and Relaxation); direct and short term (Digestion and Satiety, Energy and Psychology); deferred (Metabolism, Mood and energy, Ageing, Bowel movement, Immunity and Mobility). PCA defined 33 interpretable subscales and 15 single items. Internal consistency reliability of dimensions was very good (Cronbach’s alpha: 0.75-0.95). Item convergent validity and divergent validity were moderate to excellent. Conclusions The Well-BFQ is unique to assess the full picture of well-being related to food and eating habits in terms of immediate, direct and short and deferred benefits in general population. Its modular structure allows interdisciplinary users to address their specific research (including experimental, cross-cultural comparison studies) needs by selecting the module(s) relevant to their objectives