Surface Modification with Particles Coated or Made of Polymer Multilayers.

The coating of particles or decomposable cores with polyelectrolytes via Layer-by-Layer (LbL) assembly creates free-standing LbL-coated functional particles. Due to the numerous functions that their polymers can bestow, the particles are preferentially selected for a plethora of applications, including, but not limited to coatings, cargo-carriers, drug delivery vehicles and fabric enhancements. The number of publications discussing the fabrication and usage of LbL-assembled particles has consistently increased over the last vicennial.

A physicochemical model for rationalizing SARS-CoV-2 concentration in sewage. Case study: The city of Thessaloniki in Greece.

Detection of SARS-CoV-2 in sewage has been employed by several researchers as an alternative early warning indicator of virus spreading in communities, covering both symptomatic and asymptomatic cases. A factor that can seriously mislead the quantitative measurement of viral copies in sewage is the adsorption of virus fragments onto the highly porous solids suspended in wastewater, making them inaccessible. This depends not only on the available amount of suspended solids, but also on the amount of other dissolved chemicals which may influence the capacity of adsorption.

Two Case Reports of Varicocele Rupture during Sexual Intercourse and Review of the Literature.

Varicocele is characterized by the dilatation of the veins of the spermatic cord. Its prevalence in general male population is 15% while in the infertile population the prevalence rises up to 25%. The varicocele is considered an etiological factor for male infertility.

Acute Diffuse Peritonitis Caused by Urinary Retention: A Rare Case of Gangrenous Cystitis.

Gangrenous cystitis is an umbrella term encompassing conditions from necrosis of the mucosa and submucosa to necrosis of the entire bladder wall that can result in acute peritonitis. Timely diagnosis is challenging as the symptoms are nonspecific and resemble other conditions such as cystitis. We report a case of gangrenous cystitis in a 63-year-old woman who was diagnosed with peritonitis preoperatively by a CT scan of the abdomen.

Influence of methotrexate on radiographic progression in rheumatoid arthritis: a sixty-month prospective study.

Objective: To evaluate if methotrexate (MTX) can slow disease progression, as determined radiographically, in comparison to other disease modifying drugs in rheumatoid arthritis (RA) patients.

Materials And Methods: Pairs of hand and wrist radiographs from 30 patients treated with MTX and 30 treated with D-penicillamine (DP) were evaluated blindly and separately by two radiologists (A and B) using reference radiographs for scoring. A scale scoring similar to Larsen's standard radiographs with minor modifications was used.

[Internal urinary diversion in pelvic cancers and quality of life. Value of double "J" endoprosthesis].

The ureteral double pigtail stents are versatile and valued for proper urinary drainage in the setting of trauma, fistula formation, after extra-corporeal shock wave lithotripsy (ESWL) and surgical manipulations of the upper urinary tract. Also they are used for prolonged urinary drainage in patients with chronic tumor-induced ureteral obstruction, and present an exceptional patient tolerance. The authors' experience is based upon 54 patients treated for ureteral obstruction of malignant origin between January 1989 and October 1995.

[Endoscopic resection of a peri-stenotic fibrous callus of the urethra using Guillemin's method].

The results observed in a series of 40 patients treated for urethral stricture by endoscopic resection of the callus after internal endoscopic urethrotomy (Guillemin's technique) are presented. The mean age of the patients was 57 years, with a follow-up of five years. The authors obtained 80% (32 patients) of very good results for urethral strictures less than 1 cm long.

[Iatrogenic injuries to the distal ureter during gynecologic interventions].

Surgical injury to the ureter is an important problem that confronts the urologist, the gynecologist and the general surgeon. The authors report 20 cases of iatrogenic pelvic ureteral injuries (22 ureters) observed after gynecological surgery between January 1985 and January 1995. The ureter was injured during ligation of the lumbo-ovarian vascular pedicle because it was inadequately protected during the operation.

The diagnostic value of xero-mammography in clinically occult breast carcinoma.

Seventy-four clinically occult breast carcinomas were detected in 7535 patients who were examined clinically and by xeromammography. The criteria by which a diagnosis of clinically occult breast carcinoma was established are described in detail. The most frequent finding of a clinically occult breast carcinoma in the xeromammogram was an irregular mass density 1 cm in diameter or less with microcalcifications.

Indications and use of abdominal angiography in trauma.

A series of 148 angiographic examinations in patients with blunt abdominal trauma have been reviewed. The major indications for arteriography were: (1) manifestations of shock in conjunction with clinical signs of abdominal injury; (2) the necessity for differentiation of multiple abdominal injuries; and (3) clinical signs of delayed rupture. Few false positive or false negative results were noted.

[Radiologic findings on crohn's disease of the adult (author's transl)].

Roentgen signs of 42 patients with Crohn's disease are reported. Characteristic features are stenosis [30], fistulas (30), cobble-stone formation (14), asymetry of lesions (12), and thickening of the mucosal wall (10). Main locations are the ileum, predominantly its terminal part (32).

[The value of galactography in the secreting breast].

At the Institutes for Diagnostic Radiology of the Universities of Athens (Greece) and Freiburg/Br. (West Germany) the mammographic examination had to be supplemented in 4 res. 2 per cent by injection of contrast medium into the milk ducts (galactography).

Pedunculated cirrhotic hamartoma of the liver.

A case of pedunculated cirrhotic hamartoma suspended from the lower surface of the liver is reported. The diagnosis was suggested by angiography. The tumor was surgically excised.