SIR-C/X-SAR data calibration and ground truth campaign over the NASA-CB1 test-site

During the Space Shuttle Endeavour mission in October 1994, a remote-sensing campaign was carried out with the objectives of both radiometric and polarimetric calibration and ground truth data acquisition of bare soils. This paper presents the results obtained in the experiment. Polarimetric cross-talk and channel imbalance values, as well as radiometric calibration parameters, have been found to be within the science requirements for SAR images. Regarding ground truth measurements, a wide spread in the height rms values and correlation lengths has been observed, which has motivated a critical revisiting of surface parameters descriptors

A Wideband Diplexer for Ka-Band Passive Intermodulation Measurement

In this paper we propose a novel Ka-band waveguide diplexer for passive intermodulation (PIM) measurements. Due to the higher operating frequency, this type of measurement setup usually requires wideband filters. In addition, due to the very large separation between satellite uplink and downlink bands, the PIM measurement diplexer unit must operate over a very wide frequency band. To satisfy such wide bandwidth requirements, the proposed topology is based on a band-reject filter for the downlink frequency band which is designed to provide, at the same time, the optimal passband performance for the downlink, and the optimal equiripple rejection over the PIM band. For the PIM channel, a band-pass filter combined with a high-pass section has been used. To validate the design, a prototype has been designed and manufactured. Very good agreement is shown between simulations and measurements, thereby fully validating the proposed solution.Smacchia, D.; Carceller, C.; Guglielmi, M.; Soto Pacheco, P.; Boria Esbert, VE.; Ruiz, J.; González-Santatecla, P. (2018). A Wideband Diplexer for Ka-Band Passive Intermodulation Measurement. IEEE. 1106-1109. https://doi.org/10.1109/MWSYM.2018.84391911106110

Patients in long-term maintenance therapy for drug use in Italy: analysis of some parameters of social integration and serological status for infectious diseases in a cohort of 1091 patients

BACKGROUND: Heroin addiction often severely disrupts normal social functioning. The aims of this multi-centre study of heroin users in long-term replacement treatment were: i) to provide information on aspects of social condition such as employment, educational background, living status, partner status and any history of drug addiction for partners, comparing these data with that of the general population; ii) to assess the prevalence of hepatitis, syphilis and HIV, because serological status could be a reflection of the social conditions of patients undergoing replacement treatment for drug addiction; iii) to analyse possible relationships between social conditions and serological status. METHODS: A cross-sectional study was carried out in sixteen National Health Service Drug Addiction Units in northern Italy. The data were collected from February 1, 2002 to August 31, 2002. Recruitment eligibility was: maintenance treatment with methadone or buprenorphine, treatment for the previous six months, and at least 18 years of age. In the centres involved in the study no specific criteria or regulations were established concerning the duration of replacement therapy. Participants underwent a face-to-face interview. RESULTS: The conditions of 1091 drug treatment patients were evaluated. The mean duration of drug use was 14.5 years. Duration was shorter in females, in subjects with a higher educational background, and in stable relationships. Most (68%) had completed middle school (11–14 years of age). Seventy-nine percent were employed and 16% were unemployed. Fifty percent lived with their parents, 34% with a partner and 14% alone. Males lived more frequently with their parents (55%), and females more frequently with a partner (60%). Sixty-seven percent of male patients with a stable relationship had a partner who had never used heroin. HCV prevalence was 72%, HBV antibodies were detected in 42% of patients, while 30% had been vaccinated; 12.5% of subjects were HIV positive and 1.5% were positive for TPHA. CONCLUSION: A significant percentage of heroin users in treatment for opiate addiction in the cohort study have characteristics which indicate reasonable integration within broader society. We posit that the combination of effective treatment and a setting of economic prosperity may enhance the social integration of patients with a history of heroin use

Sexual Functioning and Opioid Maintenance Treatment in Women. Results From a Large Multicentre Study

Opioid maintenance treatment (OMT) is the most widespread therapy for both females and males opioid addicts. While many studies have evaluated the OMT impact on men’s sexuality, the data collected about the change in women’s sexual functioning is still limited despite the fact that it is now well-known that opioids - both endogenous and exogenous - affect the endocrine system and play an important role in sexual functioning. The present study aims to determine how OMT with buprenorphine (BUP) or methadone (MTD) affects sexual health in women; examining also any possible emerging correlation between sexual dysfunction (SD), type of opioid and patients’ mental health. This multi-center study case recruited 258 female volunteers attending Italian public Addiction Outpatients Centers that were stabilized with OMT for at least 3 months. SD was assessed with the Arizona Sexual Experience Scale. The twelve-item General Health Questionnaire was used to assess participants’ mental health conditions. The results show that 56.6% of women receiving OMT for at least 3 months presented SD without significant differences between MTD e BUP groups. The majority of the subjects with SD have a poorer quality of intimate relationships and worse mental health than the average. To the best of our knowledge, the present study is the largest report on the presence of SDs in women as a side effects of MTD and BUP used in OMT. Since SDs cause difficulties in intimate relationships, lower patients’ quality of life and interfere with OMT beneficial outcomes, we recommend that women undertaking an opioid therapy have routine screening for SD and we highlight the importance to better examine opioid-endocrine interactions in future studies in order to provide alternative potential treatments such as the choice of opioid, opioid dose reduction and hormone supplementation

Comparative studies on the microbial fermentations in the forestomachs of Ilamas and sheep

International audienc

Tobacco smoking prevalence in a large sample of heroin users accessing rehabilitation

Smoking prevalence among people accessing San Patrignano communit

Syphilis in prostitutes from Eastern Europe.

PIP: During the 1990s, a striking increase in the notification rate for syphilis has been observed in the Russian Federation and Eastern Europe. Given easier current access to international travel and migration from Eastern Europe, this trend is likely to involve Western Europe as well. To investigate this possibility, 110 foreign-born prostitutes (32 from Albania, 34 from tropical Africa, and 44 from Eastern Europe) presenting to an outpatient clinic in Verona, Italy, over a 19-month period were screened for sexually transmitted diseases (STDs). At their initial visit, HIV infection was detected in 2 prostitutes (both African); 9 women were positive for serologic markers of active syphilis (5 from the former Soviet Union, 1 from Romania, 1 from Croatia, and 2 from Africa). By country of origin, the incidence of active syphilis was highest among immigrants from the former Soviet Union (5/18 or 27.8%). Although 65.9% of Eastern European women compared with 56.1% of women from other regions had been prostitutes for less than 1 year, Eastern European prostitutes were significantly more likely than their counterparts from Africa and Albania to have had more than 30 partners per week (70.5% vs. 51.5%) and to have become pregnant during the study period (40.9% vs. 11.8% of Africans and 18.7% of Albanians). Compared with their other Eastern European counterparts, Russian women had the least past experience in prostitution (77.8% had less than 1 year) and the highest incidence of pregnancy (50%). These findings indicate that Eastern European immigrants, especially those from the former Soviet Union, have little knowledge of STD risks or effective contraceptive use

[Spondylitis in infancy. A case report].

The authors report on a case of a spondylodiskitis in three year old child. Diskitis is an inflammatory process of the intervertebral disk space, not often described in pediatric age. The etiology is infective and generally presents with lumbar spine localization. Clinically it is characterized by lumbar pain at times radiating to a lower extremity. Symptoms are aspecific and radiological signs do not appear for several weeks after the onset of symptoms. Interest in this pathology derives from the fact that it may be more common than previously recognized. This case offered us the opportunity to review principal symptoms of diskitis and to describe the main diagnostic technics used