Phased array for millimeter wave frequencies

A phased array is presented at a frequency of 70 GHz, consisting of a corporate feed, ferrite phase shifters and dielectric rod antennas. Metal waveguides were utilized to construct the feed network, whereas a special dielectric waveguide structure was employed for the ferrite phase shifter and dielectric rod antenna. Beam scanning can be performed electronically controlled in the horizontal plane.     

Model studies on the detectability of genetically modified feeds in milk

Detecting the use of genetically modified feeds in milk has become important, because the voluntary labeling of milk and dairy products as "GMO free" or as "organically grown" prohibits the employment of genetically modified organisms (GMOs). The aim of this work was to investigate whether a DNA transfer from foodstuffs like soya and maize was analytically detectable in cow's milk after digestion and transportation via the bloodstream of dairy cows and, thus, whether milk could report for the employment of transgene feeds. Blood, milk, urine, and feces of dairy cows were examined, and foreign DNA was detected by polymerase chain reaction by specifically amplifying a 226-bp fragment of the maize invertase gene and a 118-bp fragment of the soya lectin gene. An intravenous application of purified plant DNA showed a fast elimination of marker DNA in blood or its reduction below the detection limit. With feeding experiments, it could be demonstrated that a specific DNA transfer from feeds into milk was not detectable. Therefore, foreign DNA in milk cannot serve as an indicator for the employment of transgene feeds unless milk is directly contaminated with feed components or airborne feed particles.     

Pathology and clinical aspects of bone neoplasms

On 155 patients with vaginal descensus and urinary stress incontinence an vaginal-anterior and posterior colporrhaphy (Kelly)- or abdomino-vaginal operation--vaginal hysterectomie combined with colporrhaphy (Kelly) and Marshall-Marchetti-Krantz-had been performed regarding the lateral Cystorethrogram. The combined operation increased from 12,9% to 55,9%. The results with 13,9% recurrent stress incontinence are encouraging considering the results of severe vaginal operation with 20,4% recurrent stress incontinence. A good plastic result was obtained in 96,2% of the patients.     

Die freiprogrammierbare Steuerung in der Spanplattenerzeugung

Ohne Zusammenfassung     

On the degeneration of program generators by program composition

One of the main discoveries in the seventies was that the concept of a generating extension covers a very wide class of apparently different program generators. Program specialization, or partial evaluation, is powerful because it provides uniform techniques for the automatic implementation of generating extensions from ordinary programs. The Futamura projections stand as the cornerstone of the development of program specialization. This paper takes the idea of the Futamura projections further. Threedegeneration projections are formulated which tell us how to achieve the reverse goal by program composition, namely turning a generating extension into an ordinary program. The fact that program composition can invert the effect of program specialization shows that these projections are dual in a sense. The degeneration projections complete a missing link between programs and generating extensions and allow for novel applications of program transformation.     

Aldosterone and renin in liver cirrhosis with ascites

Supine plasma aldosterone and plasma renin activity were determined in patients with cirrhosis of the liver and ascites (n = 10). Most of the patients initially showed an increase in plasma aldosterone and plasma renin activity. However, values within the normal range were observed (plasma aldosterone, n = 3; plasma renin activity, n = 4). In the ascitic fluid renin activity could not be detected, whereas aldosterone concentrations correlated significantly with the respective plasma levels (r = 0.8, p less than 0.01). During therapy with spironolactone alone (n =2) or in combination with furosemide (n = 4), diuresis and natriuresis showed no correlation with changes in plasma aldosterone and/or plasma renin activity. Our results suggest that other factors than renin and aldosterone secretion may be important in the formation of ascites in patients with cirrhosis of the liver. In addition, the inverse correlation between mean arterial blood pressure and plasma renin activity (r = -0.65, p less than 0.05) found in our patients supports the assumption that the increase in renin secretion is probably induced by changes in (renal) hemodynamics.