Bijdrage tot de vergelijkende morphologie der Thysanoptera

The morphology of a wide range of Thysanoptera, including both primitive and highly specialised species, was described.It proved possible to find lines of development in the great diversity of forms and the homology of specialized structures such as mouth parts and wing veins could be ascertained.Structural details of the external sex organs and legs, partly overlooked by earlier workers, were described and their importance made clear.From the morphological studies, a slightly altered taxonomic system was devised.<p/

Schapenhouderij : resultaten van een lineaire programmering : bedrijfssituaties, prijsverhoudingen, arbeidsbehoefte

Programmeringsstudies omtrent de specifieke problemen op schapenbedrijven in bedrijfseconomisch opzicht en de mate van concurrentie van verschillende bedrijfssysteme

Vlees en eieren in cijfers : statistische informatie over rund- en kalfsvlees, schapevlees, paardevlees, varkensvlees, pluimveevlees en eieren

In deze publikatie is statistische informatie bijeengebracht over een lange reeks van jaren betreffende rund- en kalfsvlees, schapevlees, paardevlees, varkensvlees, pluimveevlees en eieren. De volgende statistische gegevens zijn onder meer vermeld: samenstelling van de veestapel; bedrijfsgroottestruktuur; slachtingen; produktie- en konsumptie van vlees en eieren; in- en uitvoer van vee, vlees en eieren; verzorgingsbalansen; rentabiliteit en prijzen; EG-marktordeningsregelingen. Naast gegevens over Nederland is ook zoveel mogelijk statistisch materiaal over EG-landen en OECD-landen opgenome

Optimizing fire station locations for the Istanbul metropolitan municipality

Copyright @ 2013 INFORMSThe Istanbul Metropolitan Municipality (IMM) seeks to determine locations for additional fire stations to build in Istanbul; its objective is to make residences and historic sites reachable by emergency vehicles within five minutes of a fire station’s receipt of a service request. In this paper, we discuss our development of a mathematical model to aid IMM in determining these locations by using data retrieved from its fire incident records. We use a geographic information system to implement the model on Istanbul’s road network, and solve two location models—set-covering and maximal-covering—as what-if scenarios. We discuss 10 scenarios, including the situation that existed when we initiated the project and the scenario that IMM implemented. The scenario implemented increases the city’s fire station coverage from 58.6 percent to 85.9 percent, based on a five-minute response time, with an implementation plan that spans three years

Sexual and urinary functioning after rectal surgery: a prospective comparative study with a median follow-up of 8.5 years

The purpose of this study was to prospectively compare rectal resection (RR) with colonic resection on sexual, urinary and bowel function and quality of life in both short-term and long-term. Eighty-three patients who underwent RR were compared to 53 patients who underwent a colonic resection leaving the rectum in situ (RIS). A questionnaire assessing sexual, urinary and bowel functioning with a quality of life questionnaire (SF-36) was sent to all participants preoperatively, 3 and 12 months postoperatively and approximately 8 years after the onset of the study. Short-term dysfunction included diminished sexual activity in female RR patients at 3 months and significantly more erectile dysfunction in RR patients 1 year postoperatively. Long-term dysfunction included more frequent and more severe erectile dysfunction in RR patients compared to RIS patients. These short-term and long-term outcomes did not influence overall quality of life. The incidence of urinary dysfunction was comparable between both groups. Bowel functioning was significantly better in the RIS group compared to the RR group 3 months and 1 year postoperatively. Patients who underwent RR experienced up to 1 year postoperatively more sexual and bowel function problems than RIS patients. However, short-term and long-term dysfunction did not influence overall quality of life. Erectile dysfunction in male RR patients persisted in time, whereas other aspects of sexual, urinary and bowel function after RR and colonic resection are similar after a median follow-up of 8.5 year

Radiological evaluation of colorectal anastomoses

Background and aims: The purpose of this study was to determine the accuracy, interobserver variability, timing and discordance with relaparotomy of postoperative radiological examination of colorectal anastomoses. Patient/methods: From 2000 to 2005, 429 patients underwent an