The Hertz Corporation

About: The Hertz Corporation is a based out in . It is known for research contribution in the topics: Population & Soil water. The organization has 9562 authors who have published 11044 publications receiving 447929 citations. The organization is also known as: Hertz Rental Car & Hertz Rent-a-Car.

Food transmission within the honeybee community.

Abstract: Six bees were trained to a dish, from which they collected 20 ml of sugar-syrup containing radioactive phosphorus The distribution of radioactivity among the bees and larvae of their colony of 24 500 bees was then studied 62 % of the foragers and 16 to 21 % of all the bees in the hive were radioactive within 4 h 76 % of the foragers and 43 to 60 % of all the bees were radioactive within 27 h The nurse bees were significantly less radioactive than the house bees and the foragers significantly more so Within 48 h all the large larvae in unsealed cells were radioactive These results are attributed to widespread food transmission Food transmission is suggested as the foundation of the division of labour within the honeybee community and of the similar odour produced by the members of each colony, which serves for mutual recognition Food transmission would enable slow-acting insecticides contained in their food to be widely distributed among the members of a honeybee colony

Crystalline Morphology in Thin Films of Natural Rubber. II. Crystallization Under Strain

Abstract: The morphology of thin films of natural rubber crystallized under unidirectional strain has been examined in the electron microscope. As strain increases the spherulitic morphology of unstrained films gives way gradually to a fibrillar morphology with crystalline filaments ($\alpha$ filaments) measuring 60 by 250 $\overset{\circ}{\mathrm A}$, growing perpendicular to the strain axis. The nucleation of these filaments is governed by the amount of strain but their rate of growth depends only on temperature and time. At very high strains (> 300%) crystallization occurs rapidly allowing no time for filament growth, so that the resulting morphology consists of chains of nuclei ($\gamma$ filaments) running in the direction of extension. The high strain transition from $\alpha$ to $\gamma$ filaments is accompanied by no change in the electron diffraction pattern, but the earlier transition from spherulitic to filamentous growth reveals a rotation of the molecular axis into the direction of strain. This appears to correspond to a physical rotation of the $\alpha$ filaments about their direction of growth.

How geostatistics can help you

Abstract: . Geostatistics is basically a technology for estimating the local values of properties that vary in space from sample data. Research and development in the last 15 years has shown it to be eminently suited for soil and ripe for application in soil survey and land management. The basic technique, ordinary kriging, provides unbiased estimates with minimum and known variance. Data for related variables can be incorporated to improve estimates using cokriging. By more elaborate analysis using disjunctive kriging the probabilities of deficiency and excess can be estimated to aid decision. The variogram is crucial in all geostatistics; it must be estimated reliably from sufficient data at a sensible scale and modelled properly. Once obtained it can be used not only in the estimation itself but also to choose additional sampling sites, improve a monitoring network or design an optimal sampling scheme for a survey. It may also be used to control a multivariate classification so that the resulting classes are not too fragmented spatially to manage.