X-ray determination of parts alignment

A method for determining the alignment of adjoining metal objects is provided. The method comprises producing an X-ray image of adjoining surfaces of the two metal objects. The X-ray beam is tangential to the point the surfaces are joined. The method is particularly applicable where the alignment of the two metal objects is not readily susceptible to visual inspection

Reentry communication by material addition Patent

Reentry communication by injection of water droplets into plasma layer surrounding space vehicl

Ending marriage, keeping faith: a new guide through the spiritual journey of divorce

Reviewed Book: Nichols, J Randall. Ending marriage, keeping faith: a new guide through the spiritual journey of divorce. New York: Crossroad, 1993

Colloidal particle motion as a diagnostic of DNA conformational transitions

Tethered particle motion is an experimental technique to monitor conformational changes in single molecules of DNA in real time, by observing the position fluctuations of a micrometer-size particle attached to the DNA. This article reviews some recent work on theoretical problems inherent in the interpretation of TPM experiments, both in equilibrium and dynamical aspects.Comment: 19pp. Accepted for publication in Curr Op Colloid Interf Scienc

Agricultural pest destruction movement in New Zealand

New Zealand could be regarded as an acclimatization laboratory, i.e., the consequence of a wide range of animal introductions in the period 1840-1907. Species introduced ranged from camels to hedgehogs, ostriches to sky larks. Fortunately, many failed to survive. The majority of these liberations were made by Acclimatization Societies or private individuals, often with Government approval and protection. The most damaging species were several species of deer, rabbits, Australian opossums, goats, pigs, tahr, wallabies, and chamois. Pastoral land development in the early days usually consisted of firing large tracts of indigenous forest and native grassland and this practice assisted the dispersion of some animals, particularly the rabbit. The impact of these animals was to upset the natural stability of habitat and damage soil and water values. Organizations constituted by Government with the responsibility of conducting control have in recent years made dramatic progress in reducing some animal populations to tolerable levels. This has only been achieved by positive policy changes over the years, plus the development and utilization of more effective control techniques, especially in the field of poisoning. Discussion of current species of concern includes the European rabbit, brush-tailed possum, rook, and wallabies. Control methods are briefly summarized