This paper reveals a new high-power beam dump concept developed at SLAC. Its principal features are relatively low production costs, simple-assembly procedures , compactness, and rather high power absorption capacity. The main power absorption medium is a water-cooled bed of 1 cm diameter aluminum spheres contained in a tube. This " Sphere Beam Dump " is rated at 500 kW and its production costs...

PETRA III is a high brilliant synchrotron light-source operating at 6GeV. The commissioning of the machine had started in April 2009 [1]. In the first months of operation the Machine Protection System (MPS) ran on basic MPS requirements to protect absorbers and vacuum chambers in the damping wiggler section and the undulator section against synchrotron light. Therefore several alarms distribute...

Dump engineering is an important part in production processes of open-pit mining. In order to complete the mine production tasks smoothly, it is necessary to make the most of land possessed by the dump in an economical and reasonable way. In the paper, we use the dump of Qidashan iron mine which belongs to Anshan Iron and Steel Group as an engineering background to achieve the aim of improving ...

Thymidylate synthetases of human and bacterial origin form a tightly bound complex with the substrate dUMP in the presence of pteroyltriglutamate. This complex and the weaker enzyme . dUMP binary complex can be isolated and conveniently assayed by nitrocellulose disc filtration using [6-3H]dUMP as the radioactive ligand. Intact thymidylate synthetase . dUMP . pteroyltriglutamate complex can be ...

The potentials of poultry, farmyard and refuse dump manures for management of Phytophthora root rot on sweet peppers, Capsicum annuum was evaluated in pot experiments under controlled conditions. Five week-old seedlings of pepper varieties were transplanted into heat sterilized soil amended with poultry, farmyard and refuse dump manures at 2, 4 and 8 tons/ha. The pots were arranged in complete ...

In order to extract copper metal from the waste dump of Dexing copper mine and resolve the environmental problems caused by acidic water and heavy metals, a dump bioleaching plant was designed based on a series of experimental investigations. The investigation shown that the low-grade of the dump, refractoriness of chalcopyrite, leakage of pad, small Acidithiobacillus population and low dump pe...

X-ray crystal structures of binary complexes of dUMP or dCMP with the Lactobacillus caseiTS mutant N229D, a dCMP methylase, revealed that there is a steric clash between the 4-NH2 of dCMP and His 199, a residue which normally H-bonds to the 4-O of dUMP but is not essential for activity. As a result, the cytosine moiety of dCMP is displaced from the active site and the catalytic thiol is moved f...

A yet-to-be-solved but very vital problem in forensics analysis is accurate memory dump data type reverse engineering where the target process is not a priori specified and could be any of the running processes within the system. We present a lightweight system-wide solution that extracts data type information from the memory dump without its past execution traces. Our proposed solution constru...

Uracil-DNA glycosylase was partially purified from HeLa cells. Various substrates containing [3H]dUMP residues were prepared by nick-translation of calf thymus DNA. The standard substrate was double-stranded DNA with [3H]dUMP located internally in the chain. Compared to the release of uracil from this substrate, a 3-fold increase in the rate was seen with single-stranded DNA, and a 20-fold redu...

This informal note is meant as a followup to my previous status report [Beh] to my co-conspirators Mike Hopkins and Niko Naumann, with the goal of constructing a generalization of the  and Witten orientations to TAF. The associated Hirzebruch series is supposed to be expressed in terms of Eisenstein series on Shimura varieties. The present note describes an unsuccessful attempt to produce an o...