Dynamische Märkte prägen die Ablauforganisation - Prozeß- und Materialflußgestaltung bei der KSB/Pompes Guinard S.A.

Die Firma KSB Pompes Guinard C.A. stellt in einer stark kundenauftragsbezogenen Fertigung Serienpumpen her. Da der Markt für derartige Pumpen stark umkämpft ist, gilt hier im besonderen Maße Produkte von hoher Qualität, in kundenbedarfsgerechter Ausführung, zu attraktiven Preisen und bei hohem Lieferservice anzubieten. Diesen Forderungen versuchte man bei KSB durch die Beherrschung der Prozeßtechnologie, eine immense Bevorratung und große Typenvielfalt nachzukommen. Die großen Lagerbestände, sowie eine ungünstige Ablauforganisation verursachten Kosten, die die Wettbewerbsfähigkeit von KSB stark bedroht haben. Ziel dieses Projektes war es, diese Kosten ohne Einbußen beim Lieferservice oder der Erfüllung von Kundenwünschen zu senken. Das bedeutete, daß vordringlich nicht der Lagerbestand, sondern der Lagerbestandswert gesenkt und die Produktion restrukturiert werden mußte. Durch eine Analyse der Produktstruktur gelang es, diejenigen Prozeßpunkte herauszufinden, bis zu denen eine hohe Tei lebevorratung einen akzeptablen, also niedrigen Bestandswert, verursachte, gleichzeitig aber eine kurze Reaktionszeit auf die stark schwankenden Kundenwünsche gegeben war. Desweiteren gelang es über eine Restrukturierung der Fertigungsabläufe die Materialflüsse zu entflechten, unnötige Lager abzubauen und Durchlaufzeiten zu verkürzen. Dadurch ist KSB für die Zukunft bestens gerüstet

Long-term results after non-plate head-preserving fixation of proximal humeral fractures

A retrospective study was conducted to evaluate displaced proximal humeral fractures treated with a non-plate head-preserving fixation and to detect factors predicting functional outcome. After a median follow-up period of 79.7 months, 105 patients with nine A-fractures, 36 B-fractures and 60 C-fractures (nine two-part-fractures, 41 three-part fractures and 55 four-part fractures) were assessed. Functional outcome was measured based on the Constant and UCLA scores. Of all patients, 70–75% had excellent or good Constant and UCLA scores. In 74% a good or satisfactory quality of initial reduction fracture was achieved. About one-fifth (21%) of the fractures showed a secondary displacement. Twenty-seven percent of the patients had signs of humeral head necrosis and 22% had implant related problems. There were significant correlations between a high final score and young age, low AO fracture severity, good quality of fracture reduction and residual osseous deformity, absence of secondary fracture displacement, implant-related complications, shoulder arthrosis and humeral head necrosis at the time of follow-up. In conclusion, the non-plate head-preserving fixation of proximal humeral fractures is an alternative treatment for displaced proximal humeral fractures. Especially in severely displaced C-fractures in older patients, non-anatomical reduction leads to a high rate of secondary displacement, residual osseous deformity and only a fair shoulder function. For these cases alternative methods such as prosthetic replacement should be chosen

Greenhouse vegetable research, 1974

Greenhouse tomato cultivar evaluation trials / W. L. George, Jr. -- The influence of type of irrigation and fertilization on tomato yield and quality / W. L. Bauerle -- Pollinating greenhouse tomatoes with synchronized air cylinders / T. H. Short and W. L. Bauerle -- Effects of evaporative cooling with a horizontal pad-fan system on the yield of a fall crop of greenhouse tomatoes / W. L. George, Jr., G. E. Tolla and R. J. Walker -- Vertical distribution of fusarium oxysporum F. Sp. Lycopersici race 2 in a greenhouse soil / J. D. Farley, N. Hubbeling, C. Jaberg and G. Oakes -- Steam sterilization of tomato greenhouse soils / J. D. Farley, G. Oakes and C. Jaberg -- Effects of leafminer larvae on yields of greenhouse tomatoes: a preliminary report / R. K. Lindquist -- Use of micro-gen insecticide dispersal unit and micro-gen BP-300 insecticide for greenhouse whitefly control on greenhouse tomatoes and cucumbers / R. K. Lindquist -- A leaf lettuce harvester for greenhouses / T. H. Short -- Sex expression of European seedless cucumbers / W. L. George, Jr., W. L. Bauerle and O. S. Well

Fixation of humeral surgical neck fracture using contoured pins versus straight pins: a mechanical study

The conventional procedure for displaced fracture of the surgical neck of the humerus uses straight pins inserted from the lateral aspect towards the head of the humerus. The objective of this study was to compare the mechanical properties of fixation by contoured (curved) pins to those fixed with regular straight pins. A transverse osteotomy was made in 30 fresh-frozen sheep humeri in the proximal metaphyseal bone region, and pins were inserted using either three parallel straight pins or three contoured pins in different planes. The assemblies were subjected to bending or rotational stresses at the fracture site. Loads versus deformations were acquired during loading and rigidity was calculated. Results showed that in bending, fixation with straight pins was 31% more rigid compared to contoured pins (p < 0.001), and in torsion, fixation using contoured pins was 21% more rigid compared to straight pins (p < 0.001). A combination of the two fixation types should be considered